Comprising of 20 different challenge locations, there's 60 levels to fight through, so it's understandable that the player should have a helping hand from an array of extremely useful power-ups, including protective shields, additional support craft, rapid-fire shots and column-clearing laser beams – essential aides as the action becomes progressively more intense. Even better news is that these power-ups can be used in combination: using the support craft with the laser power-up results in three laser beams, decimating multiple waves of invaders with every press of the fire button.

Two Gameplay Modes, Classic and New Era.

Two control methods, traditional pad and buttons or touchscreen.

20 real-world locations with three rounds each, totalling 60 individual levels.

13 types of invader, including Giant Invaders and Shadow Invaders.

Five power-ups, some of which combo to produce even more power.