It's quite small for most screens. I like what you've done with the garage games logo. The shoulders are out of scale with the body of the blockhead, that could be fixed. I also don't think a desktop background should be trans.
Looks a tad empty. Add some more stuff.
It's alright, but what's with that thing behind the body parts? I can't make out what the heck it is.
It looked a lot better without those two additions. (the stud and the particle)