This game has everything that the old games of Martians had, It's possible to play alone or with someone on the same computer. You start with 3 lives per ship and the easiest level, once you complete one level, you go foward to the next level, with increased difficulty at each level.
Features:
Possibility of playing alone or local coop.
A lot of levels with increased difficulty.
Good retro graphics respecting the past games.
Scores for each player.