Is there any way to get it above 640x480? It's perfectly playable at that, but a little tiny on my 1920x1080 screen. I'd like it at 800x600 or something...

Thanks!

No, it only has one resolution. But it normally runs fullscreen, so it shouldn't be small. Just don't use the "window" command line and it should fill your screen nicely.

If you don't want to play the game fullscreen, you can also use Magnifier to scale up what you see.