Any version of Tempest is awesome, my favorites being Tempest 2000 and Tempest 4000, both of which were developed by the genius Jeff Minter. I believe I made it to level 23. The farther I have ever achieved is level 33.. and it was tough! In this playthrough, I managed to (almost) complete two bonus rounds.
https://rumble.com/v207pre-tempest-4000-just-for-fun-pt.-16.html
Alright! It was tough as I had a hunter alien on my heels the whole time, but I was able to reach Nicole, who was attached to the Marker. I defeated her (eventually) and made my escape with Ellie. What a cool game. Final boss and game ending! Great stream!