Space Challenge is a 2d shmup pixel art game for shmup lovers. In this game, you are the bad guys. You will be attacking aliens to save earth from a possible invasion. You have several playable spaceships. Each one has its own weapons, special attacks and abilities. As you advance through the enemy base, you will upgrade you ship, your main weapons and learn new abilites. Key features: - Various spaceship - A special weapon for each ship - Various main weapons - Various abilities - Leveling system