In college, game design legend Jeff Minter (Ox) created a game with his friends called DEFLEX for the Commodore PET. The original code is lost to time, so Minter recreated it (on the PET!) from scratch and put it out as a Vice Save State. A volunteer converted it to a .PRG and now it's emulated at Internet Archive:

https://archive.org/details/deflex-remake

Deflex Remake : Jeff Minter and Others (Design) Jeff Minter (Remake) : Free Download, Borrow, and Streaming : Internet Archive

'Deflex' was originally a PET game us nerds made at QMC. Long since lost to time. I decided to do a remake. Jeff MinterInstructions:Deflect the Ball using...

Internet Archive
@textfiles This is a pretty cool #CBM #PET game. I have found a small bug meaning that you can not complete a round and thus it gets caught in an infinite loop, but I can forgive Jeff for that 🙂

@ShaunBebbington @textfiles I did find and fix a bug myself in the first version which meant a target could be printed offscreen, it's line 3000 IIRC and if it's the old version there'll be a Y coord generation that's set at *22 and +1, altering that to *19 and +2 ought to fix it. If it's something else LMK what happens and I can look at the code again.

Not surprising there might be a bug or two, BASIC is *nasty* :D