just kidding; if you haven't play at least 3 of these 10 games, you might want to reconsider frequenting a video game site such as GameFAQs.gamespot.com
It does not matter if you did not play them in the '90s. It just matters that you played them. All of these games originally released in the '90s so if you ended up playing a port on a later console or even a remaster, it is totally fine. To play a game simply means having tried a game.
Turok: Dinosaur Hunter
Tomb Raider II
Silent Hill
Gran Turismo
Killer Instinct
Legacy of Kain: Soul Reaver
Pokemon Snap
Duke Nukem 3D
Donkey Kong Country
Mega Man X
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Wild ARMs is still the best JRPG series in my opinion and we desperately need a new game in the series!