Mercury Meltdown for the Sony PSP is a puzzle-platformer game developed by Ignition Banbury. Players guide a blob of liquid mercury through complex levels by tilting the environment, navigating through obstacles, traps, and mazes. The game boasts vibrant, colorful graphics and utilizes the PSP's analog stick for precise control. With multiple stages that increase in difficulty, players must strategically maneuver the mercury, split it into separate colors, and merge them to match color-coded exits. The game's unique physics and engaging puzzles make it a standout title in the PSP's library.