Sega decided to dust off and polish up Alex Kidd in Miracle World when the Genesis was released. The result? Alex Kidd in the Enchanted Castle, one of the best platformers ever released for the Genesis. What a great game.
One of the best ninja games for the NES, falling just shy of the original Ninja Gaiden. It's also one of the only games that features a female ninja, Lady Kaede - and she can kick just as much ass as Lord Hayate.
One of the better adventure games on the NES, The Goonies II holds it's own even today. Just to hear the music to this one takes me back to a simpler time... ah, nostalgia.
Run Saber is the only Strider-esque game for the SNES, and it's quite a good game. Combining the gameplay of Strider with the atmosphere of Contra make for quite a good combination in my book.
One of the best overhead shooters released in recent years, Strikers 1945 II (released as Strikers 1945 for the U.S. PlayStation) is the spiritual sucessor to Capcom's 194X series. It also includes all sorts of things Capcom's series didn't, like transforming mecha and other fun surprises.
Based on one of my favorite manga and anime series, Area 88, U.N. Squadron is a great port of a fantastic arcade game - and is one of the best shooters on the SNES.
I've always liked this game, from the moment I first played it. It's like Contra with a rocket pack and a shop. The arcade game is even better, but I have a sentimental attachment to the Genesis version.
One of the first shooters released for the Genesis, Truxton is also one of the best. Be warned - it can get pretty tough in the later levels.
NCS' fantastic mech platformer - much better than either of their Assault Suit Leynos games, imo. It was released by Konami as Cybernator in the U.S.
Yohko stars in her first (and only) side scrolling action game. It's too bad this never came out in the U.S., as this was an extremely fun game along the lines of Valis.