Late last year we sat down with Terry Welsh, the one man development team of Really Slick, to talk about his retro cave shooter, Retrobooster. The game places you in the shoes of a pilot (or pilots, if playing cooperatively) who's the last best hop to fight off the horde of invading aliens and save the galaxy. This isn't your typical twin-stick shooter, though, as Terry's worked hard to get the physics behind your space flight just right. That means Newton's First Law of Motion is in full effect as you'll be having to balance your thrust and propulsion to avoid running into everything. He's the right man for the job, too, as he once worked at NASA constructing flight simulators.