First we have "Blaze" for Amiga. It's a Sonic clone that was coded in 1993 and just released in 2015
Next, we have "Wonderland Dizzy" for NES. I have always wanted to play a Dizzy game but never sat down for very long with one.
"Putty Squad" for Genesis / Megadrive. According to retrogamer.net, the game was developed for Amiga, SNES, Genesis and PC, but only the SNES version ever hit the shelves. Unsure whether the levels are different on the Genesis version.
"Beyond Kung Fu" for arcade. Sequel to a game I've never heard of called "Kung Fu Master"
And we can always check out some of those new NES games that they are still making these days :)
The game was originally developed in the mid-Nineties for the Amiga 1200, SNES, Mega Drive and PC, but of these four only the SNES version ever reached the shelves. - See more at: http://www.retrogamer.net/blog_post/putty-squad-leaks-again/#sthash.OvK3oFYu.dpuf