Android Giveaway of the Day - Caverns of Mimas

Caverns of Mimas is the first in a series of minigames

You've been locked away.
Can't really remember how long or why any longer.
No one ever comes down here.
Why would someone leave an unsupervised spaceship?
You'd be stupid not to take this chance.
Time to leave....

You steer a spaceship trapped on the moon Mimas and need to find your way to the exit.

Collect all the orb-keys needed to open the caverns exit.
Pick up different kinds of ammunition along the way to ease your journey.
Avoid enemies or intentionally collide and hope your ship can take more damage than theirs!
Figure out how to get out of the cavern

The aim of the game is to complete all 25 levels as flawlessly as possible.

What's this then?
It's not entirely easy to describe what type of game Caverns of Mimas is.
I would probably classify it as a "casual Space-Maze-Shooter, with certain puzzle elements".