First of all, we'd like to explain the game concept. It's pretty much an adult version of Asteroids in terms of basic mechanics. Shoot some asteroids, avoid some asteroids, win. But that's not really fun to develop if you ask me. So let's make some complications. What will suit an adult game? Right, different enemies. Not enough? Ok, let's do some weird stuff with game controls. In that game, you will not directly control your character movements. A character movement speed and its direction will mostly depend on a gun recoil. And to aim a gun, a player must use character's legs to adjust rotation speed and her arms to adjust a final direction of a shot. The jetpack will help to acquire a more predictable movement in comparison to a gun. That's how weightlessness in space should work in our opinion. And yes, we know nothing about actual space physics and don't intend to start debates on this topic.
P.S. We'll talk about the enemies in the next post. In a few days, hopefully.