Mightier Mightier is a 3d game which makes you pull out a pen and paper to solve its puzzles. You print out the puzzle from Mightier, solve the puzzle, then scan it into the game. If you dont have the proper equipment, you can also draw in the terrains in game using a mouse. This is a one of a kind game that is definately worth a look. 

Stepmania StepMania is a rhythm game along the same likes as Dance Dance Revolution. You try to match up with arrows running on the screen. This game is multi-platform and is moddable and skinnable. You can find a ton of new songs to play if you look online as well. 

Focus Focus is an addictive fun platform game featuring over 50 levels. The game has an old school feel, check it out it is worth a look. 

Future Pinball Future Pinball is a sweet pinball game where you can build your own machines however you want and play them to your heart's content. It uses a good physics engine to model the ball movement. As pinball games go, the graphics in this one are top notch, I dont know of any other free pinball games that can hold a candle to this game. If you like pinball, this is a must have. 

Deepolis (Browser Game) A deadly war rages on between 3 confederations. Take the plunge and face the dangers of the briny deep as a sub commander.  

Sea Fight (Browser Game) Become a swashbuckling pirate and take the helm of yer own ship to become the terror of the Seven Seas. Dive into the world of pirate adventure 

Farmerama (Browser Game) Trade in your city life for a taste of the country. Run your own homestead, till your own fields and raise your own cattle. Keep trespassers off your land: This is your farm now!

Life is hectic on the farm: There are lots of animals and crops to tend to not to mention neighbors to shoot the breeze with. Out in the boondocks community comes first! 

Dark Orbit (Browser Game) Duty calls! Enlist today and become a space pilot. Explore dangerous galaxies far, far away and win interstellar battles in DarkOrbit!

DarkOrbit has achieved cult status among space games: Millions of players roam the galaxies looking for raw materials with their guns armed and ready for battle.  

Hero Core Flip Hero returns for the final battle against his nemesis, Cruiser Tetron - but can he really stop the reign of the machine warlord for all time? Like the first game, the graphics are black and white, the controls are simple and the gameplay is easy to learn. The nonlinear game world allows you to tackle the boss machines in nearly any order, or head straight for Tetron's headquarters if you're skilled enough. 

Spelunky Speunky is a platform game with some very addicting gameplay elements. The game world is procedurally generated, meaning it is different each time you play. There are no save points, if you die you start over in a brand new generated world. The game is very challenging but also very addictive. This game is one of those rare gems definately a must have. 

Gem Craft Gem craft is a defense strategy game where you use various gems with different powers to defend yourself against waves of enemies. In my opinion this is the best tower defense game made to date. The gameplay is very deep and addictive.  

Snok Remember nibble or worms. Well this is the next generation. A 3d worm game, with excellent graphics and multiplayer capability over several beautiful levels. Dont miss out.