MAME has this game marked as not working, but there is really only one big issue, a freeze in Stage 2. Luckily we can overcome this just with the Insert button fast forward, eventually it unsticks, and then the game works fine. There is a good and a bad ending to this game, seems like the Good ending is likely faster. Other than that this game is pretty decent, the bosses are interesting and fun, even if some seem a bit unfair. I liked the organic nature and feel of all the enemies.

Part of the Gotta Run Em All Arcade series - Game #546

Start (First Mission Selected) - 00:05

Saucer Freeze - 11:42

Saucer Unfreeze - 13:35

End (Final Cutscene Starts) - 41:18

Total - 39:20