My new game will be out soon. It’s a mixture of tunnel flying mechanics (press to go up, release to go down) and classic aracde shoot’em up.
The basic idea is that everything is generated using pseudo-random numbers, so alien graphics, their movement patterns and the terrain can have infinite variations.
In the regular levels, every time you play, the levels are the same, but as they are procedurally generated, there can be an almost infinite number of them.
In the random levels, every time you play you get a unique set of levels, with their unique set of aliens and terrain. This gives more variety to the game.
The game also supports Game Center for Highscores (only in the regular levels).