Touhou Project (PC, 1996) - I wasn’t aware of this series of bullet hell shooters but it’s been going on for a long time. This piece of art struck me as particularly whimsical.
Return Fire (3DO, PlayStation, PC, 1995) - One of the most non-descript games since Pong, I don’t remember a single bit of story or set up besides “green army vs brown army”… and a laughing skull.
Ninja Spirit (Amiga, Amstrad CPC, Atari ST, Commodore 64, ZX Spectrum, 1990) - But the image you’re looking at here is from the TurboGrafx-16 version.
Kid Icarus (NES, 1987) - courtesy NESmaps.com
The Wizard of Oz: Beyond the Yellow Brick Road (Nintendo DS, 2009) - Listen to my wife and I talk about this peculiar and charmingly Japanese DS game.