Stick Soldiers is a really cool game that I've played for some years now. Version 1 and 2 of the game was developed by WhiteSpace Unlimited. Version 3 of the game is under construction as well, but this time under Andrew Rusell Studios. The game is truly unique in its concept and is highly customizable and comes with a level editor as well.
While the game lacks in graphics, it makes it up in terms of gameplay and interface. Gameplay is highly addictive and interface is downright simple. In Stick Soldiers, you control a pencil-drawn stick soldier with various weapons (uzi, grenade launcher, etc.) to destroy other stick soldiers in your attempt to reach the specified frag limit
Download Stick Soldiers 1
Download Stick Soldiers 2
from their official site.
Stick Soldiers 3 is currently a work-in-progress and will be shareware, rumored to cost roughly $20 USD for the full version. However, a definite price has yet to be announced; the only official price range up to now is between $15 USD and $20 USD. The free, shareware version will not have any time limits for playing, but those without the full version will lose out on some features.