1) Game pitch: "Escape the Impossible Hotel" — Players race through a strange hotel where every floor is a short obby mixed with a simple escape-room puzzle, using clues, switches, and environmental tricks to reach the elevator before time runs out. The key differentiator: the obby itself contains the clues — players have to notice patterns in the environment rather than simply hunt for a hidden button. 2) Core loop: Enter Floor → Explore the room (spot clues, interact with objects) → Solve mini-puzzle → Unlock obstacle section → Complete 2-4 obby challenges → Reach elevator → Next floor / checkpoint → Repeat. For a 10-minute session, aim for 5-7 short floors, each taking about 1-2 minutes. 3) 3 unique mechanics: (a) Clue-to-Obby — A visual clue in the escape-room section directly tells players something about the upcoming obby. Example: a painting of a red door hints that the next obstacle involves finding red buttons. (b) Checkpoint Twist — Reaching a checkpoint changes the room layout for the next player in multiplayer, so no two runs through the same floor are identical. (c) Time Echo — A ghost replay of the previous player's run shows hints without giving away the full solution. 4) Progression: floors unlock sequentially; cosmetic rewards (hats, trails) per 3 floors completed; leaderboard for fastest floor completion. 5) Monetization: gamepass "Skip Stage" (permanent, per-floor or universal); cosmetic skins (character trails, hotel key accessories); no pay-to-win mechanics. 6) Session design: 5-7 floors per 10-minute session; checkpoint every 2 floors; speedrun mode for replayability. 7) Hardest parts to build: (a) room puzzle design that scales across 5-7 unique floors without repeating mechanics; (b) the Checkpoint Twist multiplayer sync; (c) balancing obby difficulty for the 8-14 age range.