Personally it would be Republic Commando - the books were good too, but I just want a sequel!
Kotor, but mostly the second one. With the restored content it’s so much better than anything else that it feels unfair.
I’ve always loved Galactic Battlegrounds because RTS are fun. Rebellion is another great one that another commenter mentioned. I was also a fan of Jedi Knight and Jedi Academy and replaced them on switch a year or two back.
Galaxies. RIP
X-Wing (1993). I’m old. It is still one of the best games I’ve ever played.
Definitely Jedi Knight II: Jedi Outcast