Sacrifice. I am so sad it didn't have a bigger impact than it did. What an amazing game.

Anachronox. Ion Storm at it's best. Engaging plot and characters, humor well ahead of its time for a game script, and party members and environments that I've still never seen many games match to this day. I don't know why it didn't become huge, I think the rpg crowd back then was still pretty married to sword and sandal conventions. If you like old games, I can't recommend it enough.

Blinx the time swipper, haven't seen any other game trying to play with time like that.

Oh, and crimson skies.

Elebits! The sequel plays nothing like the original and I would love to have it get a proper sequel! The art and character designs were done by Akihito Tsukushi, who created Made in Abyss, another great thing I love very much!

Test Drive Eve of Destruction from the original Xbox and PS2. More recently, Code masters' OnRush.

Dark Savior. I don't think I have ever seen anyone mention this game ever (without googling for it).

Ngage Bounce Boing Voyage. I played it a couple of times but never finished it. It was great for the time and hardware.