this site has links to free games that don't require purchases, also has links to good sites for free games, and flash games!

Roblox

A free game where you can build with blocks and play online with your friends!
but  thats not all! you can play other games that people made, how do you make these games? with lua!
you can customise your character with shirts, t-shirts, pants,hats, faces, and even gear!
you can use tools like the rocket launcher, pistol,and sword. You can even fight zombies( like the place i made)!
the link on the right will bring you to roblox-->
pokelover10 is always making whimsical adventures at ROBLOX, a friendly player-made hangout

Toribash

Toribash Online Martial Arts community Toribash is a fighting simulator, sort of complex, but with a little practice...

Americas Army 3.0

http://www.americasarmy.com/
this first person shooter is DEFINATELY worth checking out.
it is a pvp game with two teams
it has an honor system, which is similiar to leveling up, but you get no stats, and of course for it to be on this site, its
FREE
warning: big download about 3.5 gb!


Drift City

In this racing mmorpg; you can gain levels, go through the story, fight bosses with other players, buy new cars, parts, and sell them! so download, create an account and play here

The Battle for Wesnoth

http://www.wesnoth.org/
a turn based strategy game with rpg like elements, multiplayer.
EASIEST GAME EVER TO GET MODS FOR, they're right in the menu!

I Wanna Be The Guy (IWBTG)

In my opinion, this is THE HARDEST platformer
If you willing to punch you screen with anger, click here
this site has links to free games that don't require purchases, also has links to good sites for free games, and flash games!