With so few good new titles being released these days, especially by major studios, I figured I'd make a thread for everyone to share your favourite classic or older games, especially if they're lesser-known titles that others might have missed at the time.
I'll open with The Saboteur (2009), Mercenaries (2005) and Saints Row 2 ( The 2008 original)
A few older games I've been thinking about re-playing recently.
Alpha Centauri
Tony Hawk Pro Skater
Ocarina of Time
If you're in to adventure games, there are about a billion games that can be played with Dosbox or scummvm. I've been playing through a bunch of 80s/90s games recently. The hardest part is to not google when you get stuck! I'm on Legend of Kyrandia 1 right now, and I plan to go through the series. I never played the others.
If you haven't, Ocarina of Time is probably my favorite game to play randomized and the only one that was ever fun enough to finish like that (instead of being a novelty).
It shows just how well made of a game it is, with dozens of little details and well developed mechanics that not only let you really sequence break without glitching but show that they planned for things you could never actually do in the game proper. Such as Adult Link not being able to move heavy blocks without the Goron Bracelet from Kid Link because he lacks the strength.
The Axiom Verge randomizer is pretty interesting. If I have an hour or two to kill I'll fire it up and go through a random seed.
I really enjoyed Axiom Verge the one time I played through it, but I don't think I know it well enough to randomize it.
I think any well made Metroidvania lends itself well to randomizing though.