History of invasion

You control UFO. Make robots and destroy buildings. Kill peoples with help destructive ray. Z - Select robot X - Select destructive ray C - Select gravitational ray LMB - Activate ability S - Sound and Music P - Pause H - Help ESC - QUIT

Z - Select robotrnX - Select destructive rayrnC - Select gravitational rayrnrnLMB - Activate abilityrnrnS - Sound and MusicrnP - PausernH - HelprnESC - QUIT