What is good in a pc gaming logo?

I have a Gaming channel on youtube and I can't make a free or cheap logo I, or others, like. I have a temporary one and I have tried to make one with gimp. I play Battlefield 4, Minecraft, and Gmod, I have some Tom Clancy's Ghost recon Gameplay and I have Team Fortress 2 Gameplay, and Quake live. What do you think my logo should look like?
Geniuses I'm looking for you