THE CHRONOS ARCHIVE
Welcome to The Chronos Archive: The Lost Constellation
What it is: The Chronos Archive is a high-stakes, one-shot tabletop adventure set in a legendary library built into the side of a floating mountain. It is an ancient repository of history protected by a massive celestial security system, now serving as a therapeutic environment to stabilize executive functioning and cognitive processing. When players enter the Archive, they must navigate rotating floors, celestial star-chart gates, and a ten-foot-tall clockwork sentinel where every action tests their mental clarity and precision.
Tone & Feel: Arcane mystery · tactical · ancient-tech · atmospheric · high-pressure.
Think of the smell of ancient parchment and cold mountain air, the soft scratching of pencils against paper, glowing blue light connecting celestial maps, and the rhythmic, heavy hiss of a steam-powered bronze guardian.
Therapeutic Lens: Every scene is intentionally designed to create opportunities for:
Cognitive Rehabilitation: Engaging in complex problem-solving and memory recall while managing the stress of a mechanical guardian.
Executive Functioning: Practicing initiation, sequence planning, and goal-directed persistence through celestial puzzles.
Working Memory: Recalling precise sequences of symbols and colored lenses under pressure.
Sustained Attention: Maintaining focus during timed visual scanning of a shifting "Cipher Grid" floor.
Fine Motor & Near-Point Copying: Translating character archetypes and stats from the central list to individual sheets.
Visual-Motor Integration: Tracing complex paths between stars in a specific order without lifting the pencil.
The player experiences a thrilling journey to recover a map through time, while the therapist delivers structured cognitive rehabilitation within a motivating, high-stakes frame.
THE CHRONOS ARCHIVE: THE LOST CONSTELLATION: GM SCRIPT
A One-Shot Adventure for Occupational Therapy (Cognition & Executive Functioning)
MODULE OVERVIEW
Who this is for: Occupational Therapists running a group session (2-4 players).
Therapeutic Focus: Executive Functioning (Sequencing/Planning), Working Memory (Recall), and Sustained Attention.
Duration: 60 Minutes.
MATERIALS NEEDED (GM PREP)
Game Tools: 2d6 dice per player, Character Sheets, Pencils.
Activity 1: The Star Map (Sequencing): A drawing of 5 numbered stars connected by lines in a specific order (1 → 5).
Provided at the end of the module
Activity 2: The Cipher Grid (Scanning): A 5x5 grid of random symbols/letters.
Provided at the end of the module
Tokens that can be used to mark the grid on activity 2 and the life tracker with activity 3 (these can be coins, dice, or any other small items)
Activity 3: The Warden’s Weakness (Memory): 3 distinct colors or shapes the GM will reveal and then hide.
Provided at the end of the module, cut out before beginning
Activity 3: Sentinel’s Life Tracker
Provided at the end of the module
SCENE 1: THE ARCHIVE ENTRANCE (Character Design)
Focus: Initiation, Planning, and Fine Motor (Near-Point Copying).
GM DO THIS:
Place the Archetype List in the center of the table.
Provide each client with a blank character sheet and a pencil
SAY: "Choose a hero that fits how you want to play today. Carefully copy their stats and special power onto your sheet. If you need help with the details, just ask the group".
READ ALOUD:
"You stand before the massive, bronze doors of the Chronos Archive, a library built into the side of a floating mountain. The air is cold and smells of ancient parchment. You are the 'Wayfinders,' a team sent to recover the Lost Constellation, a map that can guide travelers through the shifting mists of time. To enter, you must lock in your identity. Who are you for this mission?"
SUGGESTED ARCHETYPES: (allow the others to be used as appropriate)
The Champion (Might +2, Heart +1): "You are the protector. If a stone door is stuck or a monster appears, you lead the way". (Life: 5 hits).
The Sage (Mind +2, Heart +1): "You are the scholar. You can read the ancient star-charts and solve the riddles of the Archive". (Life: 2 hits).
The Shadow (Agility +2, Dexterity +1): "You are the scout. You move silently and notice the traps before they spring". (Life: 3 hits).
After everyone has finished writing their stats, the GM should look at each player and ask one of the following:
For The Champion (Might & Heart)
The Weight of Legend: "Your weapon is famous in the Archive. Is it a heavy greataxe made of dragon-bone, or a glowing shield passed down through your family? How does it feel in your hands right now, is it heavy, or does it feel light as a feather?"
The Vow: "You swore an oath to protect this team. Who here do you think needs your protection the most today, and why?"
For The Sage (Mind & Heart)
The Forbidden Book: "You’ve studied the Archive’s layout for years. What is the name of the one 'forbidden' book you’re secretly hoping to find while we are inside?"
The Scholar’s Tool: "You carry a special tool for deciphering ancient codes, is it a magnifying glass, a magical monocle, or a set of old, ink-stained maps? How do you keep it safe while traveling?"
For The Shadow (Agility & Dexterity)
The Silent Step: "The Archive is filled with echoey floors. What is your secret for moving without making a sound? Do you wear soft leather boots, or do you have a trick for walking only in the shadows?"
The Hidden Gear: "Besides your main weapon, you have one 'utility' item hidden in your belt (like a smoke bomb, a lockpick, or a grappling hook). What is it, and when was the last time it saved your life?"
Group Questions (To build Teamwork/Cognition)
The Mission Goal: "We are looking for the 'Lost Constellation.' When we find it, what does it look like to you? Is it a glowing scroll, a floating crystal, or a golden compass?"
The Formation: "We are about to enter the bronze doors. Who is walking at the very front to watch for traps, and who is at the very back to make sure no one is following us?"
The Motivation: "The Archive is a dangerous place. Why did your character volunteer for this mission? Was it for the glory, the knowledge, or are you doing it for a friend?"
Tip for the GM: If a player struggles to generate an idea, give them two simple choices (e.g., "Is your sword made of silver or gold?"). This reduces the cognitive load while still allowing for "autonomy and choice," which are key to executive function rehabilitation.
SCENE 2: THE STAR-CHART GATE (Sequencing & Planning)
Focus: Executive Functioning (Sequencing/Planning), Visuoconstruction, and Visual-Motor Integration.
GM DO THIS (Setup):
Hand out one copy of "The Star-Chart Gate” to each player.
Provide each player with a sharp pencil (or a fine-tip dry-erase marker if using laminated sheets). Ensure they all have good desk space and lighting.
SAY: "The doors are locked by a celestial sequence. They will not open for one person, but only when everyone can show they know the way. You must each individually trace the path of the stars in the exact order they appear in the sky, from 1 to 5, without making any mistakes or lifting your pencil. The other stars are just distractions."
GM DO THIS (Execution - The Activity):
Set a timer (depending on group level).
Instruct the players to begin.
As they work, monitor their progress. Notice who plans their route before drawing, who corrects errors, who struggles with the visual clutter (letter-stars), and who needs to stabilize their sheet with their non-dominant hand.
If a client makes a mistake (e.g., going 1 → A → 2) or lifts their pencil, gently stop them and say: "The sequence failed. The ground rumbles. You must reset. Please start the path again, from Star 1, for the gate to accept it."
TRANSITION: THE MOMENT OF UNLOCKING READ ALOUD:
"The room is silent except for the soft scratching of pencils against parchment. As each of you reaches Star 5, your final line clicks into place. All of your maps begin to hum simultaneously, vibrating in unison."
ROLL: MIND (To see how perfectly the group coordinated their entry). Have everyone roll. Take the average, or have the player with the highest Mind bonus roll for the group.
10+ (Perfect Alignment):
SAY: "The moment the last person finishes, the air crackles with energy. A single, pure blue light flashes, connecting all of your maps. Before you, the massive bronze doors of the Archive groan, but then hiss and slide open instantly, without resistance. A cool breeze from inside hits your face. You feel focused, synchronized, and ready for what lies ahead. Everyone, give yourselves 1 additional Hit (Life) from this renewed confidence."
7-9 (Slight Dissonance):
SAY: "You all finish, and the maps glow, but it’s irregular. The energy is out of sync. The doors shudder and grind against each other violently. Dust showers down from the ceiling as they force themselves open, inches at a time. The effort is draining. (Assign 1 'hit' of damage to one player or have them pick who takes it)."
6 or Less (System Reset):
SAY: "As you finish, all of your maps simultaneously flare a deep, blood red. A deafening alarm-horn blasts! The lines on your maps vanish. A voice from the gate echoes: 'SEQUENCE FAILED. ALL PARTIES MUST RETRY. GROUP SYNCHRONIZATION NECESSARY.' (Assign 1 'hit' of damage to everyone. If anyone has 0 hits, the stress causes them to drop their weapon. They will need to pick it up later). You must all take a collective deep breath, look at each other, and try to synchronize. You must re-do the sequence, making sure everyone starts and finishes together.
TRANSITION: INTO THE STACKS
READ ALOUD:
"The heavy doors groan open, revealing a hallway lined with bookshelves that reach so high they disappear into the clouds. Floating orbs of light drift past you. As you walk deeper, the floor beneath you begins to rotate.”
SCENE 3: THE CIPHER FLOOR (Visual Scanning & Attention)
Focus: Sustained Attention, Figure-Ground Perception, Working Memory, and Inhibitory Control.
GM DO THIS (Prep):
Place one copy of “The Chronos Cipher” on the table so that each client can see it.
Have the players use a dry-erase marker (if the sheet is laminated) or place small tokens (like pennies or buttons) on their desk.
SAY: "The floor beneath you is not stable rock. It is a giant, floating mechanism, a 'Cipher Grid.' It is spinning, trying to throw you off. To stop the motion and create a stable bridge, you must find and lock in specific Key Symbols that I call out. Scan the entire floor and pinpoint the exact match."
TRANSITION: STABILIZING THE CHRONOS ARCHIVE READ ALOUD:
"The room has no standard gravity. The bookshelves drift past you, and the floor below begins to hum and rotate, faster and faster. The symbols printed on it become a blur. A voice booms through the chamber: 'ACCESS REQUIRES STABILIZATION. DECODE THE SEQUENCE OR THE FLOOR WILL SHIFT.'"
The following scenarios can be performed for one client at a time or for the entire group all together. Make your best judgement based on the needs of your clients. If you are doing it individually for each client, select different icons each time.
SCENARIO A: SINGLE ICON (Focus on Pure Scanning & Attention) Use this option if the group/individual struggles with high cognitive load or multiple-step directions. GM SCRIPT (SAY):
"The first glyph is flickering... Find the Telescope (Top Right)!" (Wait for confirmation).
"Quickly, the floor is still spinning! Find the Detailed Hourglass (Middle Left)!" (Wait).
"Final symbol, it's just appearing... The Fiery Star X (Bottom Center)!" (Wait).
SCENARIO B: THE CHRONOS SEQUENCE (Focus on Working Memory + Sequencing) Use this option for a high-level cognitive challenge. The GM must state the entire sequence first and then have the clients execute it from memory. GM SCRIPT (SAY):
"Wait! The floor isn't accepting single inputs. It requires a full sequence, locked in perfectly. I am only going to say this once. Listen carefully, memorize the order, and do not place your tokens until I give the command."
"You must find and lock: The Sundial (Bottom Right), then the Green Star 5, and finally, the Golden Astrolabe (Middle Right). The order must be Sundial → Star 5 → Astrolabe."
(Pause for 3-5 seconds of silent retention). "Go! Decode the Archive!"
SCENE RESOLUTION (After Activity): GM SCRIPT (SAY):
"As the final token clicks onto the last symbol, a surge of energy pulses through the grid. The entire mechanism locks into place with a definitive THWACK. You find yourselves steady on a circular platform. The floor is the key."
ROLL: DEXTERITY or MIND (Team Average/Best Roll)
10+ (Precision Strike):
SAY: "You were incredibly efficient! Your tokens landed simultaneously. A flawless, blue bridge of light extends toward the main console. You did it before the main threat could fully engage!”
7-9 (Grinding Gears):
SAY: "You identified the sequence, but the floor was violent. You stumbled multiple times, gasping for breath. The floor grinds and groans, but finally locks. The mechanism strains your gear; narrate one player falling and taking a hit (this can be chosen randomly, by rolling a die, or by having the group decide)."
6 or Less (System Overload):
SAY: "The sequence was chaotic! Tokens landed on the wrong symbols. The floor jerks and spins wildly, throwing the entire group completely off balance. All of you stumble into the next room, completely disoriented and breathless. (Everyone takes 1 hit of damage from the fall). The floor has stalled, but it’s still unstable. You must take a collective deep breath, steady your nerves, and re-try the activity before the Archive locks you out forever!"
SCENE 4: COMBAT WITH THE BRONZE SENTINEL
Focus: Working Memory, Turn-Taking, Divided Attention, and Inhibitory Control.
GM DO THIS (Setup):
Print and cut out the Colored Lenses ahead of time. Keep them hidden from the players until the memory challenge.
This scene assumes you will use three colors at a time, adjust this to match the needs of your clients
Have the Sentinel's Life Tracker clearly visible.
Enemy: Bronze Sentinel (6 Hits).
TRANSITION: THE GUARDIAN AWAKESREAD ALOUD:
"The circular bridge of light from the Cipher Floor guides you to the central console. As you reach out for the floating Lost Constellation map, the massive pile of scrap metal in the corner begins to churn and assemble itself! It stands 10 feet tall, with heavy, interlocking bronze plates and pistons. In the center of its chest is a triangular array of three glowing, clockwork lens sockets. It blocks your exit, steam hissing from its joints. A booming mechanical voice echoes: 'TEMPORAL VIOLATION DETECTED. THE ARCHIVE MUST REMAIN CLOSED.' It doesn't want you to leave. This is it, fight, or get locked away in time!"
DETERMINING INITIATIVEAcknowledge that because the heroes often have faster reactions, they will act first. Choose one player (e.g., the Sage, or the player who finished the Cipher Floor first) to take the first action.
PLAYER TURN 1GM DO THIS:
SAY: "(Player Name), you are the closest. The Sentinel is powering up its defense. What do you do?" (Prompt for attack style: Might, Agility, or Mind).
The player declares their Attack: Determine which stat check they will use (ex. Might for a great sword).
THE WARDEN’S WEAKNESS (Memory Challenge):
SAY: "You see the Sentinel’s chest glowing! Quick, memorize this sequence of internal energy. You must strike the moment its lenses match this order!"
Action (Standard Challenge): Quickly pull three colored lenses from Image 20 (e.g., Red → Blue → Green). Place them down on the table clearly in order (1 → 3). Leave them visible for 5 seconds, then flip them face-down.
Modification based on skill level: Use 2 colors (Red → Blue) for a simplified task, or 4 colors (Red → Blue → Green → Yellow) for a significant memory challenge. The GM makes this decision on the fly.
SAY: "(Player Name), now roll to attack!"
Execution (Working Memory):While the player is rolling the dice, ask them: "Quick, what was the sequence of the Warden's lenses?" They must state it from memory.
RESOLVING THE PLAYER ROLL (2d6 + Stat)
IF THE PLAYER RECALLS THE SEQUENCE CORRECTLY:Give them +2 to their roll.
Total is 10+ (Precision Strike):
GM SCRIPT (SAY): "Yes, Red-Blue-Green! You timed it perfectly. The moment your sword strikes, the lenses match! Your blade bites deep into the central clockwork core. (Mark 1 Hit on the Sentinel's life tracker). Describe your attack, does the core spark, or do gears fly?"
Total is 7-9 (Grinding Gears):
GM SCRIPT (SAY): "Correct, Red-Blue-Green! Your hit is timed well, damaging the lenses. (Mark 1 Hit on the tracker). But the Sentinel parries your strike with its other massive arm, knocking you back into the stone wall. Take 1 'hit' to your Life from the heavy impact! How do you react to the counter-attack?"
Total is 6 or Less (Deflection):
GM SCRIPT (SAY): "Correct, Red-Blue-Green! You hit at the right moment, but the Sentinel is made of hardened chronos-bronze. Your sword simply deflects off its armor, failing to pierce the central mechanism. (No damage). The Warden looms over you, unaffected!"
IF THE PLAYER FAILS THE SEQUENCE (No memory bonus):
Total is 10+ (Brute Force Success):
GM SCRIPT (SAY): "You missed the sequence, but your strike was exceptionally strong! The force of your might causes the Warden to shudder, and gears spill from its shoulder socket! (Mark 1 Hit on the life tracker). That was pure power. Describe how it feels!"
Total is 7-9 (Wild Swing):
GM SCRIPT (SAY): "You missed the sequence. Your attack hits the main armor, not the vulnerable lenses. You deal minimal damage, but the force triggers a blast of hot steam! Take 1 'hit' of Life damage as you are seared. How does your character keep fighting?"
Total is 6 or Less (Critical Failure):
GM SCRIPT (SAY): "You missed the sequence! Your chaotic attack triggers a defensive feedback loop. The Sentinel doesn't just block; it overloads its energy. You take a painful magical shock! Take 1 'hit' of damage, and you are staggered. The Sentinel prepares a devastating attack for its turn!"
Repeat similar process with the other players
SENTINEL’S TURN (Counter-Attack)GM DO THIS:
Activate the Sentinel after 1-2 player turns, or whenever a player rolls a 6 or Less.
Choose one of the Sentinel's reactions below to make the combat dynamic.
REACTION 1: STEAM EXPLOSION (Agility/Might)
READ ALOUD: "The Warden turns its attention to (different player). It crouches and vents superheated steam from all ports! It slams its massive fist into the lightweight floor. Everyone, roll to brace or dodge (Might or Agility)!"
GM SCRIPT (SAY):
(If roll is 10+): "You nimbly dive behind the console, the steam rushing past you harmlessly! Describe your character's reaction as the cloud clears".
(If roll is 7-9): "You block the blast, but the scalding steam sears through your armor. Take 1 'hit' of damage. Are you able to maintain your grip?"
(If roll is 6 or Less): "You are caught completely off-guard! The force of the steam knocks you down and sears your skin. Take 1 'hit' of damage, and you are 'Pinned' under a pile of heavy gears. Who is going to help their teammate next?"
REACTION 2: TIME REVERSAL (Divided Attention/Mind)
READ ALOUD: "The Warden raises its main arm, and the central gear begins to spin backward. For (Player Name), time is moving in reverse! You see the Sentinel’s attack happening before it begins!"
GM DO THIS: "You can try to interrupt this attack with a Mind roll, but you must simultaneously divide your focus: Tell me how you defend while I count down from five... 5, 4, 3, 2, 1!" Assign a 'hit' of damage if they fail to generate a plan within the time limit.
REACTION 3: GEAR TOSS (Physical Coordination/Pencil Activity)
GM DO THIS: Place 3-4 small tokens (coins, dice, other small items) randomly on the table.
GM SCRIPT (SAY): "The Warden grabs massive gears from its own body and hurls them! They are flying toward you! You have limited seconds to knock them all away!" (Set a 15-second timer. The player must use their pencil to accurately point to and 'tap' each token, physically clearing the 'debris'). Assign damage for any token not cleared when time runs out.
END OF COMBAT: SENTINEL DEFEATED Continue turn-taking, using the Sentinel Reactions to interrupt player plans, until all 6 hits are marked.
GM SCRIPT (SAY):
"With a final groan of twisting metal, the Bronze Sentinel collapses into a heavy pile of gears. The lenses on its chest shatter. The entire Chronos Archive goes silent, the humming mechanism of time slowing to a peaceful halt. The Lost Constellation map hovers perfectly still, waiting for you".
TRANSITION: THE CONSTELLATION RESTORED (Memory Final Check)GM DO THIS:
SAY: "You have defeated the guardian. But the Archive demands one final act to release the map".
Ask the whole group: "To unlock the starlight map and go home, you must state one last time: what was the first memory sequence of the Warden’s lenses?"
(Celebrate the successful recall of the original 3 (or simplified 2/complex 4) colors from the start of Scene 4, emphasizing how their teamwork and memory unlocked the prize!)
ENDING: THE HAUL
ENDING: THE CONSTELLATION RESTORED
"With the Harmony spoken, the Lost Constellation, a sphere of swirling galaxy dust and ancient star maps, descends gently into your outstretched palm. The moment you touch it, the smoke in the room vanishes. A warm, blue beam of pure starlight shoots downward, enveloping the entire group."
"You rise, weightless, through the top of the rotating chamber. As you pass the bookshelves, you see them not as dangerous tools, but as an endless archive of history. The light intensifies, blinding you for a second, then softly fades. You open your eyes and find yourselves standing exactly where you were before the journey, but you have changed. Your gear is scuffed, your heart rates are settling, but you are synchronized. You have conquered the Chronos Archive. And in your hand, a new map waits".
THERAPEUTIC WRAP-UP (Group Reflection)
"This session challenged how you plan (Sequence Map), how you pay attention to confusing patterns (Cipher Floor), and how you manage to remember sequences under stress (The Warden). Let’s take two minutes to reflect."
ASK (Selectively): "Which challenge made you feel the most focused today, and which one made your brain feel 'overloaded'?"
ASK (Whole Group): "The voice said you needed 'Harmony' to open the final door. How did working together as a team help you manage the memory challenge during combat?"
ASK (Targeted): "When you finished that final memory check, how did you manage your frustration/stress?"
Evidence:
While the effectiveness of TTRPGs in cognitive therapy have not been published at this time, the evidence available suggests a positive impact. Check out the Rehab Arcade’s TTRPG page for more information about this.
Below is evidence in support of the specific interventions used throughout this one-shot: