Easy-to-run PC Games - Suggestions?

Counter Strike 1.6 doesn't require much of a good pc.

DucoHD said:

Counter Strike 1.6 doesn't require much of a good pc.

Even our extremely old 2002 computers in my school can run CS 1.6 without lag. 1.70Ghz

Oo CSS - why didn't I think of that? A good five years or go or so I spent the summer living with a friend and we played CSS alongside GunZ pretty much all day every day. I never picked up CSS when I got home but I'd already been playing GunZ for a number of years before that. I might pick that up again, too, played that for maybe 8-9 years in all. I love that game.

If anybody hasn't played GunZ: The Duel before, I highly recommend that. Low specs, free download via IJJI. It'll be very frustrating at first as pretty much the only people who still play it are pros, and the game is heavily reliant on beneficial 'glitches' known as K-Style/Monk-Style which the community has grown to love. Primarily PVP with a 'Quest' mode for team-based PVM which is better for XP. Obviously PVP is the most fun when you get good at it.
Animé/Third-Person/Sword/Firearm game. Awesome.

Most indie games will work, and most of the steam F2P games, If you want a game from the F2P section team fortress 2 and A.V.A (Alliance Of Valiant Arms.) AVA is a VERY WELL optimised game and even on my intel HD Graphics I get 30-60FPS.