Spent an hour brainstorming, had one idea that might be great, but would probably take a ton of work. Had another idea that I thought I could prototype the core mechanics in a half hour, so, 45 minutes later here we are!

http://pink.thesilentb.com/ld47/40minutes/

Think it'd work?

I'm thinking biplanes avoiding things and dodging through structures or space ships dodging asteroids.