1 man. 0 life.
Looks good. I remember Zarch/Virus fondly.
Looks great. If you want to use png, note that there are tools to make them much smaller (file size), without needing to drop the resolution. eg Tinypng.com. You can save much more by using jpegs, and can trade off size for quality - default settings save tons of space but can be a bit nasty.