Time Killers is a beat 'em up game released on the Sega Genesis. The European and US releases, while sharing the same core gameplay, might have differences in their presentation.  The game's gameplay often involves navigating side-scrolling levels, battling enemies with various martial arts moves, and collecting power-ups.   The core mechanics are quite similar to other beat 'em ups of that era. The specific companies behind the European and US releases may vary.

Time Killers (Europe)

Thunder Pro Wrestling Retsuden (Japan)