Space Invasion a deep space shooter game that is available at pgslot. This specialty game is reminiscent of classic arcade shooter games like Galaga and Space Invaders. You can choose the type of missiles you use, but each has a different price to use. The aim of the game is to destroy as many enemy ships as possible. Bigger rockets may cost more, but they can help you earn bigger prizes in the end. There are also upgrades that players can unlock along the way. The bonuses you can unlock, the better you will be at destroying enemy ships and racking up huge wins.