Escape Puzzle Kit - Puzzle and Interaction Systems

Puzzle and interaction systems for first-person games in Unity 6, with 100 working props and an escape level that plays every one of them. Doors and locks, keys, keypads, combination locks and card readers, levers, valves, breakers, fuse boxes and power, an inventory with examine and documents, story beats and three save slots. Each system is a component, wired to the others in the Inspector with UnityEvents and power links, not code. They work with any first-person controller, on Built-in and URP, and need no other package.

Made to be taken apart

• Each system stands on its own. A keypad takes its code without the inventory, a door opens with no power or saves in the scene. Take one system, or all six.
• Your own content in one step. An item is an asset you create, name and put on a pickup or a lock. A mesh is swapped by keeping the kit's part names, or by setting a Turn or a Slide on a part of your own model. Both are written up step by step.
• The demo plays every system. Night Shift is an escape level of ten steps through four rooms, and the props gallery has each prop working side by side.
• Documented, with a changelog. Documentation/ has a README, a short page for each system and the changelog.
• Support by email at spyridwn.pd@gmail.com.

What's inside

• Six systems: interaction, items and inventory, doors and locks, switches and power, story, and saves.
• 45 working props in the kit's low poly look: doors in wood and steel, a bunker door, a vent cover, a wall safe and a keypad, a padlock and a combination padlock, a chest, drawers, a staff locker and a key cabinet, a fuse box, a breaker panel, a lever, buttons and light switches, a valve, a crank, a generator, a card reader, a roller shutter, a gauge, lamps and a beacon, and a typewriter to save at. Each is a prefab: drop it in and it works.
• 55 more in a PSX look, the same systems on PS1-style models: a generator, fuse boxes, breaker and switch panels, knife switches, levers, valves, a winch, a chain hoist, gauges, a blast door, gates, lift doors, a card reader, a safe, a lockbox and padlocks, a pillory, a radio, a phonograph and a dollhouse.
• 29 set pieces to build rooms around them: brick, block and concrete walls with doorways, floors and a ceiling, a workbench, desks, chairs, filing cabinets, shelving, crates, a pallet and a drum.
• Night Shift: a dark storeroom, a dead fuse box, a door code, an office with a clues board, a vent, a safe, a crank that winds up a shutter, and a plant room whose generator wants fuel before the card reader wakes and lets you out.
• The Hud: an aim point, prompts, subtitles, the objective, an inventory with examine, a document reader, a code pad, save slots and a pause menu. It is drawn with IMGUI, so there is no Canvas to set up.
• 11 items with icons: two keys, a keycard, a fuse, a crank handle, a screwdriver, a battery, a first aid kit, fuel, a diary, and a flashlight whose battery runs down.
• Sounds on every prop: doors, locks, keypads, levers, drawers, the shutter and the inventory. Each is a field on its component: swap in your own.

The systems

• Interaction: look at a thing within reach and use it: the prompt says what it will do.
• Items and inventory: pickups, drawers and lockers that hold things, documents to read, things to turn over in your hands.
• Doors and locks: keys, bolts from one side, keypads, combination locks, padlocks, card readers, doors that end the game or lead to another level.
• Switches and power: levers, buttons, breakers, valves, cranks, fuse boxes; a machine runs while what it needs is live.
• Story: beats on entering a room, taking a thing or a flag set: subtitles, the objective, sounds, lights going out.
• Saves: three slots of JSON: the run, the player and every door, switch and pickup in every level visited.

Any controller

The systems need one component on your first-person camera, the Interactor. Use Starter Assets' controller, your own, or the demo's walker: the kit doesn't care how the player moves.

Two looks

The low poly props are the kit's own: muted and stylized, their textures made in code, one texture atlas, real-world scale. The PSX ones are PS1-style models from three of our PSX packs, whose models keep their own licence beside them.

PSX look: PSX Puzzle Machinery and PSX Horror Props by heyheythere. Sounds: PSX Horror SFX by heyheythere.

The PSX models come from PSX Puzzle Machinery, PSX Horror Props and PSX Horror Props II, and the sounds from PSX Horror SFX. Want only the PS1-style models, with no systems? PSX Puzzle Machinery is that pack.

Unity 6.3

A .unitypackage: the systems' scripts in their own assembly (HeyHeyThere.EscapePuzzleKit), the props as prefabs with colliders and their clips, the kit's shader for Built-in and URP, Night Shift, the props gallery and the documentation. Tested by a playthrough of Night Shift on both pipelines.

Free sample

Escape Puzzle Kit Free has the interaction, items and doors systems, 14 working props and a storeroom to escape from, free.

License

Use in unlimited commercial and non-commercial games and apps. No attribution required. Don't resell or redistribute the scripts, models, textures or sounds themselves.

Support

spyridwn.pd@gmail.com: say which Unity version and pipeline you are on. The changelog is in Documentation/CHANGELOG.md.

Made with AI assistance (code, text, models, textures and sounds, all generated by code), checked by eye and tested in Unity 6.3.

Available from 11 Oct 2026 09:01 UTC. Puzzle Systems Bundle - Escape Kit, Minigames and Elevator: all 3 for $29.99 ($45.97 at regular individual prices)

More packs

• Conveyor Systems - Belts, Rollers, Turntables and Sorters
• Low Poly Bunker - Cold War Bunker Kit
• Low Poly Bunker Building Kit - Modular Walls and Tunnels
• Low Poly Bunker Machines - Working Doors and Consoles
• Low Poly Industrial Building Kit - Modular Factory Walls
• Low Poly Industrial Facility - Modular Factory Kit
• Low Poly Industrial Machines - Working Doors and Controls
• Low Poly Pipes and Ducts - Industrial Pipework Kit
• Low Poly Prison - Cell Block Kit
• Low Poly Prison Building Kit - Modular Cell Blocks and Yard
• Low Poly Prison Machines - Working Cell Doors, Gates and Security
• Low Poly Prison Props - Cell Furniture, Signs and Clutter
• Low Poly Sewers - Victorian Sewer Kit
• Low Poly Sewers Building Kit - Modular Tunnels and Channels
• Low Poly Sewers Machines - Working Sluice and Pumping Station
• Low Poly Sewers Props - Pipes, Signs and Debris
• Low Poly Subway - Metro Station Kit
• Low Poly Subway Building Kit - Modular Metro Station and Tunnels
• Low Poly Subway Machines - Working Fare Gates, Escalators and Train
• Low Poly Subway Props - Signs, Posters and Station Clutter
• Low Poly Warehouse Props - Forklift and Racking
• Puzzle Minigames - Lockpick, Safe, Wiring, Pipes, Hack
• Working Elevator - Moving Platform Lift System