Retro Invasion

Retro Invasion is an action game in which you fight monsters across levels. You can play Campaign or Invasion mode, using a choice of weapons to stop the monsters from conquering the world.

Game modes

In Campaign mode, you kill monsters and stop them from conquering the world. In Invasion mode, you must kill all the monsters and finish each level without dying. If you fail, the level starts again.

Key cards

Key cards found in each level let you enter some rooms; others do not require a card. Cards come in red, yellow and blue. Choose which room to open carefully, since opening one room may prevent you from entering another.

Weapons

You can use the pistol, minigun, shotgun, rocket launcher and Uzi directly. You do not need to find or collect them.