CrystalSplinter app for iPhone and iPad

It is a shooting game.
The setting is a world based on an octahedron, like a diamond crystal.
The game begins with you being expelled from the octahedral palace.
Your mission is to return to the octahedron palace from which you were banished.
The octahedrons guarding the palace will become 12 mines when destroyed.
The goal is to return safely to the palace while avoiding the mines.
To change direction, press and hold the triangle button.
Until you understand the outline of the game, it is better to enjoy the beginners course.