> ## Documentation Index > Fetch the complete documentation index at: https://docs.nudj.cx/llms.txt > Use this file to discover all available pages before exploring further. # Catch > Catch positive items, avoid negative ones Catch is a score-based game where items fall from the top of the screen. Move the catcher to collect positive items and avoid negative ones. Your score rewards you at the end. ## Playing * Move the catcher horizontally by touching / dragging on mobile or using keyboard / mouse on desktop. * Catch positive items to earn points in the game. * Miss negative items. * The game ends when the level timer expires or completion criteria are met. ## Levels Each level has a configured item set (positive and negative), spawn rates, and a time limit. Reach a per-level target to clear the level; miss it and the level may end in game-over. ## Scoring and supply Catch includes a **supply floor guard** — the game ensures enough positive items spawn over the course of a level so you always have a chance to hit the target. You can't be shut out by a pure run of negative items. ## Rewards Catch is score-based; distributions are configured against score thresholds. Passing the thresholds awards points, XP, and reward assets as configured. ## Related Context on games. Timing-based alternative. Where rewards land.