As time goes on, unreleased games are found. These retro titles could be complete though not released, betas, alphas, promo vids of gameplay, etc. We have collected the coverage of these types of games here for your convenience.
Nintendo Game Boy Advance:
Overstorm (2D Action/Adventure)
Nintendo Virtual Boy:
ToeJam & Earl 3 (Action/Adventure)
Atomic Runner/Chelnov (Arcade)
Jet Moto 2124 (Racing)