Best format for textures blender game engine?

what is the fastest format to import into blender collada?

What is a decent resolution for scenery/wall textures?

I want to shoot for middle of the road on texture quality vs performance.

For game development I like using DDS textures. DDS textures save vram by remaining compressed on the video card. You can find plugins for both Gimp and Photoshop to allow you to create and handle DDS textures.

Thank you sir :smiley: