I saw this on one of my message boards I visit. This is a 32bit demo, that looks real close to 3dmark in terms of graphics. The texture are awesome, the enviornment is great, and it's only 64kb. Thats right. My jaw dropped when I saw this, it runs for about 2 mins, and has over 5 diffrent worlds. You have to check it out, its worth the download!
Download: Download Here64kb