Extreme - Commodore 64 - longplay
3Digital Integration, developer of this game is mostly know for flight simultion games.
More infos here: https://www.retrogamer.net/profiles/company/digital-integration/
A bootleg version was released in Italy, under the name FROXIM (https://youtu.be/lknMrkkaqbk).
Many many many thanks to minotaurus, the biggest Commodore 64 expert (of his neighborhood :D); he sent me some note, here we are: the game isn't very long (apart from the first level), seems more a demo than a full game.
As a kid I didn't immediately figure out how to move forward after the crystal passes that part on the right where the doors are always closed (except if you use double speed, a power-up you must retrieve from that little ufo shaped enemy).
The last level is the most difficult in my opinion because you basically have to use wisely your plasma weapon, because finishing it is basically game over.
First level enemies don't move smoothly because apparently the programmer(s) used characters and not sprites (that's why there are a lot of them on screen).
Played by minotaurus and recorded by V.E.D., as part of the videogame endings database, whose goal is to catalogue and create the world's largest archive of videogame endings! (what an humble and not ambitious project :D)
If you want to contribute please let me know!