Title screen
The mother ship enters the screen
Aliens position themselves in columns
Here comes a UFO
Shooting the UFO
In the US version UFOs also attack on the sides
When columns are full, aliens begin attacking
It's necessary to stay out of its range
I was killed
Killed by UFO
Game over
Ranking
Title screen (Japanese version)
Japanese version has slightly different layout
The regular aliens can attack on the sides of the screen (Japanese version only)
Larger blast radius in the Japanese version
Killed by UFO (Japanese version)
Are we missing some important screenshots? Contribute.