I have said previously on this blog that no system is complete without a version of Hudson Soft‘s Bomberman, and the Megadrive has one in the form of Mega Bomberman.
Mercs is a classic arcade shooter from 1990. It was jointly developed by Sega and Capcom and features simultaneous three-player cooperative gameplay.
SegaSonic the Hedgehog is an arcade game from 1993 starring Sega‘s famous blue mascot, Sonic the Hedgehog. It features beautiful isometric graphics and trackball-based multiplayer gameplay.
Sega‘s 1990 arcade hit, Alien Storm, is a one, two, or three-player action game with side-scrolling and first-person shooting sections.
Developed by Shadow Software and published by Rasputin Software in 1995, Base Jumpers is an interesting platform game where the aim is to climb to the top of a succession of tall buildings in order to launch yourself from the top of them and parachute down to safety.
Atari Games‘ 1990 arcade game Rampart is a strange but compelling single-screen castle-building action game, with artillery-based shooting sections.