Isometric Game Art Pack - Extensive library of game art for indie devs
MagicaVoxel - A free lightweight GPU-based voxel art editor and interactive path tracing renderer.
Sketch This - Daily drawing challenges
Cubik Studio - Model in a unique cubic style. Start modelization with boxes. Move, rotate and scale cuboids.
IsometricSass - Make isometric 2D objects without Javascript
Marmoset Hexels 2 - an exciting grid-based 2D painting tool that enables you to effortlessly create brilliant works of...