This game uses the engine Alibis except it is less complex, it is a mini play
But it is more evolved than emoticon.
The Game Is To Eliminate enemies before they touch the heart center of the map.
More time passes and more monsters appear quickly (at first you do not realize goal in the end it's different ...)
During the duration of The Game can receive bonuses that have 3 levels of evolution:
Multi-launch: Allows you to run multiple projectiles (3,5,7).
Size: Increases the size of projectiles.
Speed: Increases speed of shots.
Refill: Increases the speed between each shot.
Perforating: The projectiles perforate enemies.