blinded
Iron Storm

Cool game, multiplayer was so cool. Its super cheap on steam.

mnky9800n
Outpost 2. It's a sim game where you build a society that lives on an unforgiving planet after the last survivors of humanity have travelled the galaxy in hibernation while the ship computer searches for a viable new planet. But the computer couldn't find a nice place so it settles on a really shitty one. While the game has combat I always thought managing all the resources was the most fun.
benoau
An obscure PSP-only game called Jeanne d'Arc, which I see now has actually been re-released this year for PS4/PS5!

https://en.wikipedia.org/wiki/Jeanne_d%27Arc_(video_game)

quantified
Tempest hasn't been completely forgotten, but its fans are definitely a very small cult.
mikewarot
Qix an arcade game.

Star Raiders, an Atari Computer game.