Mr. Tuff is an action platformer that saw various regional releases and even prototype versions. The European version, featuring multiple language support (English, French, German, Spanish, Italian) and released as a prototype, showcases the game's development journey. The 1994 release dates highlight the timing of both the prototype and final European release.  Details about the developer and publisher remain somewhat obscure.

Mr. Tuff (Europe) (En,Fr,De,Es,It) (Proto) (1994-12-05)

Mr. Do! (Europe)