Extreme is a Commodore 64 shooter developed in 1991 by J.E., & O.H. Dev. It is a hack of Warhawk, albeit a seemingly unfinished one with a couple of bugs. It does seem to have its own music though. It's unknown as to if there's a more complete version in existence.

Title screen showcasing a big orb, & a space ship.

A gameplay screenshot with enemies, & background elements.

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