Space Station Radii

Protect the Space Station Radii from interdimensional invaders. Movement is radial around the surface of the station and shooting is outwards. Enemies likewise also orbit the station and shoot at it. The player has health that replenishes each wave but the station has health that carries between waves and levels. Game over occurs if either the player or the station is destroyed. Between levels, the player can utilises the energy provided by killing enemies in order to enhance their abilities or ...