Resources

Icons: https://www.iconfinder.com/
Maze Generation! http://en.wikipedia.org/wiki/Maze_generation_algorithm
Game programming tutorial: http://www.youtube.com/playlist?list=PL6E90696571998DC2
THIS IS GOLD: http://www.java-gaming.org/index.php?board=23.0
How to do animation in 2D Game: http://gamedev.stackexchange.com/questions/32873/how-does-changing-weapons-and-character-animation-in-2d-games-work
LibGDX Animations / AnimatedSprite: https://www.youtube.com/watch?v=J1vlWP8gaMg
Getting into Networking: http://gafferongames.com/networking-for-game-programmers/
Awesome eBook: http://uap.unnes.ac.id/ebook/electronic%20book%202/Teach%20Yourself%20Internet%20Game%20Programming%20with%20Java%20in%2021%20Days/

2D Physics Engine:
Box2D: http://box2d.org/
Chipmunk2D: http://chipmunk-physics.net/

3D Physics Engine:
Havok: http://www.havok.com/products/physics
Bullet: bulletphysics.org/wordpress/
Vortex: http://www.vxsim.com/
UNITY: http://unity3d.com/unity/quality/physics