Twin Mouse

About

Twin Mouse is a platformer developed by Open Corp and released in South Korea for the Sega Master System and Mark III. You control two mice running side by side through scrolling levels filled with enemies and hazards. The core loop involves jumping over gaps, avoiding spikes, and collecting items while keeping both characters alive at the same time. One wrong move ends the run since you must manage the positions of both mice to progress. The game stands out for its local focus as a title that did not see wide international release outside its home region. Players often discuss how the dual-character mechanic adds a layer of puzzle solving compared to standard single-hero platformers. Community ratings on retro forums suggest it remains a cult favorite among collectors who enjoy obscure Master System gems. It offers a tight experience without relying on flashy graphics or complex storytelling to keep things moving forward.