关于此游戏

Drill through hordes of alien creatures, earn credits, upgrade spaceships, unlock new weapons and fight terrifying alien bosses!

• Clear four planets from aliens, each planet has its own enemy and background style.

• Fight different enemies with various behaviours and attack types.

• Upgrade your spaceships to new tools of destruction like flack cannons, gatling guns and rail rifles!

• Take on three giant bosses to exempt the planets!