Sky Adventure

This US version has several differences from the Japanese and World versions:

The Japanese and World versions just show Alpha Denshi's copyright on the title screen. In the US version, it shows a copyright for SNK Corporation of America with a "Licensed from Alpha" notice. SNK's logo is also on the title screen in the US version instead of Alpha's. The US version also has a "Winners Don't Use Drugs" screen, which is not in the Japanese and World versions.

The Japanese and World versions have 2 buttons: the first button is used for firing, and the second button is used for bombing. There are also items to change your weapon in the stages. In the US version, all of the weapon change items were removed from the stages, and the US version uses 3 buttons instead of 2 (the third button is used to change between planes). The weapon for the A type plane was also changed in the US version.

The Japanese version is in Japanese, and the World version is in English. Like the World version, the US version is also in English, but the translation was redone in the US version to sound less awkward.