This is a sample version of TKO Super Championship Boxing for the SNES, released in the USA. Sample versions are usually pre-release versions given to reviewers or distributors for evaluation.  They may be incomplete, contain placeholder assets, or include unfinished features compared to the final retail version.  A sample version is useful to see the game's early stages.

TKO Super Championship Boxing (USA) (Sample)

Tiny Toon Adventures (Japan) (Rev A)