Mickey's Ultimate Challenge, a Sega Master System title exclusive to Brazil, is a platformer featuring the iconic Disney character. Gameplay involves navigating levels, overcoming obstacles, and collecting items.  The game's precise release date is not widely documented, but it is known to have been released in Brazil sometime during the Sega Master System's lifespan. The game’s Brazilian release is likely due to the popularity of Disney characters in the region.  The developer and publisher information for this regional release is often unavailable in readily accessible online databases.

Mickey's Ultimate Challenge (Brazil)

Mercs (Europe)