Space Invasion & Karate Joe (Europe) is a Game Boy Color title which presents a unique combination of two different genres on a single cartridge. It features both a Space Invaders-style game and a Karate Joe game. The European release suggests a possible regional variation or a focus on that market.  Information on the developer and specific gameplay details is likely scarce due to it being a less mainstream title.

Space Invasion & Karate Joe (Europe) (Unl)

Space Invaders (USA)