There's a bug: if you pauses the game while enemys are spawning, they keep appearing, an when you resume the game, they are all togheter over the spawning point.
mmm... Good game, but with a veeeery bad bug: YOUR REPAIR DRONES RUN AWAY FRON THE BATTLEFIELD. The went to the upper right corner and didn't returned...T_T
Arg! I killed that penguin king and I didn't take the badge! It's weird, cause the badge it's checked in the list, but with the picture still in grey...
An easy game? Where? This game get veeeery difficult when you waste all you money buying armour cause you ran out of this after a level in which the screen is flooded with enemy lasers... And also the sound crashed whe I paused the game. 2/5 (cause I love Space Invaders...)