Pokemon NXT is a new fan made Pokemon game made in Unity 3D.
It is still in Pre-Alpha mode but can be played here in your browser.
Check it out and visit the website for more info
How to play
Use WASD to run around, mouse to look. Select your Pokemon by using keys 1-3 and hit ENTER to release ball. When in combat mode, use keys 1 and 2 to use attacks.
Video source: ScottyPlaysGames