This is a ROM hack of Penguin Kun Wars, specifically a version with English translation by Penguin v1.012 and further fixes by Spinner 8. It's a fan-made modification of the original Japanese Penguin Kun Wars game on NES.  Gameplay will remain similar to the original, with added English language support thanks to this ROM hack.

Penguin Kun Wars (Japan) [En by Penguin v1.012] [Fix by Spinner 8]

Pegasus 4 in 1 (Unl)