Project Y(ou) O(nly) G(et) O(ne) G(un) is an exciting and constantly evolving collection of design documents for a hopefully forthcoming action/adventure. The game is designed to take the groundbreaking physics puzzles made possible by the Havoc engine and combine them with traditional fps combat and an entirely new system of time manipulation to give players a game that finally provides action, puzzles, and a compelling storyline. Our game utilizes a single weapon, reconfigurable in numerous ways, providing players with dozens of unique weapon effect and hundreds of possible strategies, and allowing them to tailor their weapon, and their strategy, to their own particular style of play, and the situation at hand. Our emphasis in this game is on replayability, exploration, and flexibility,