Pocket Smash Out & Race Time appears to be a compilation or combined game for the Game Boy Color, released in Europe and marked as unlicensed ('Unl'). It likely bundles gameplay elements from both 'smash' and racing styles. The 'Unl' designation suggests an independent development and distribution lacking the backing of a major publisher. This would mean a smaller scale project likely with simpler graphics and sound compared to more polished releases.  Further details regarding its gameplay mechanics or its specific game modes are not readily available.

Pocket Smash Out & Race Time (Europe) (Unl)

Pocket Puyo Puyo-n (Japan)