I get asked pretty regularly what some of my favorite all time games are, and I always used to find it difficult to answer that, considering how that list can change based on what's out there at any given point. I am at this moment, okay with publicly saying what 10 of my favorite games are, but keep in mind that this list is in no particular order, and whit the game industry not dying any time soon, this list is subject to change.
MetalStorm -NES -Irem: No one can ever claim Irem made the greatest games ever, but Metalstorm might be one of the best platformers on the NES. It was the first game I ever played that allowed a player to manipulate gravity as they needed to, and that novelty added a lot to the gameplay in this one.
Saturday Night Slam Masters -Arcade, SNES, Genesis -Capcom: In the early 90s Capcom could do no wrong, and the mashup of pro wrestling atmosphere and fighting game control worked better than the WWF and WCW games were at the time.
Parasite Eve -PS1 -Squaresoft: Square used to be about new IPs that were good, and not crap like Mindjack. Parasite Eve was one of their best RPGs not called Final Fantasy, and it seems to be all but forgotten now. a travesty if you ask me.
Gunstar Heroes -Genesis -Treasure: Gunstar in my opinion is quite possibly one of the three greatest old school action games ever. Everything about Gunstar felt perfect gameplay wise, and it was one of those games that defined the 16 Bit generation for me.
Castlevania: Symphony of the Night -PS1 -Konami: The Castlevania series is my all time favorite series of games, and Symphony is my all time favorite game in the series. Konami took the exploration of Castlevania 2, the boos battles of Castlevania 4, and the seamless game layout of Super Metroid and churned out a game that has been hard to follow up. Which might explain why Lament of Innocence was so poorly received.
Guerrilla War -NES - SNK: Before SNK was known as the fighting game company, they made a lot of great arcade games, and most of those arcade games made great NES games. Guerrilla War was one such game. It took the gritty gameplay of Ikari Warriors and made it grittier and faster.
Ikaruga -Gamecube, XBLA, Dreamcast - Treasure: No powerup system, epic boss fights, and an extreme test of reflexes sums up exactly what the highly stylized bullet hell shooter is all about.
Strider 2 -PS1 -Capcom: Capcom took their original Strider game and gave it a graphic overhaul, tightened the contorl, and sped things up, you get this action game masterwork that looks as good today as it did in 2000 when it was released.
Zone of the Enders: The Second Runner -PS2 -Konami: Hideo Kojima's third game for the PS2 did not disappoint, and it surpassed it's predecessor and every other anime based game in the process.
Robotron 2084 -Arcade -Midway: Robotron is probably one of the most tense video games I have ever played, and after playing games like Left 4 Dead and Dead Rising, I understand why. Robotron puts players in a box shaped room and tells them to save humans and kill aliens. It's simple and pure as far as games go, but it can be nerve racking once a player starts to advance a few waves and realizes there are far more aliens than there is free running room in the small space you inhabit.
There are more games that inhabit my list of favorites, but these are a few I think you guys would gets a kick out of playing if you haven't tried them before.