Terminal Velocity (spoilers? the game is 25 years old now, so)
so, Terminal Velocity's last episode takes a very sudden turn from "evil borg trying to take over the universe" to "evil borg ... trying to mass-produce harmless robots and worship (what is apparently) a supercomputer???"
the briefings you're given in the last episode get very bewildered and unsure at points about what is actually going on
the last planet, Proxima Seven, ends abruptly after the second mission (every single other planet in the game has three missions), revolving around flying into a tunnel that looks like a giant floppy disk drive, and destroying the "supercomputer" which looks like a cartoonish person in a box, in a trivial fight, then leaving through another tunnel
it ends so abruptly it even skips the normal post-level briefing