Thanks ;). I was actually surprised it could be possible in BASIC. Waiting for a rasterline was key. Have you submitted something this year, Roman? I remember really enjoying your Lumberjack, and Boomjack especially. Also, was it your game by any chance with yet another bouncing ball jumping up from platform to platform? I am trying to find it for a while but no luck. I can think only of someone such talented as you who could make that one :).
Maybe you think of this one? https://bunsen.itch.io/chucks-challenge-by-romwer
Yes, that was a simple but nice little game mechanic, discovered by accident.
I haven't submitted a contribution this year yet but I'm sure I'll get the itch the closer the final submission date is coming. :)