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)
Check out the RetroAchievements website. Challenges for all of your favorite older titles and there's events you can do as well to find new favorites which earn you badges.
For example, this month's Game of the Month to beat was Dragon Quest: Rocket Slime and it was an absolute blast.