Thanks.
I discovered the FN functionality when doing this game.
When you're doing same things multiple times and it's just a simple formula with single input, FN is really helping to bring code-size/lines-of-code down. Still learning MEGA's BASIC (departed from V2 after ~1 year owning a C64, came-back to MEGA with ASM, then C, now BASIC ;) )

Yeah, was the initial plan, also having starting speed selection.
But this was my "what can I achieve in less than four hours after super-busy work-day and few brain-cells left working" attempt :D
But since this is BASIC, everybody can extend their version,
the "S"(peed) variable needs to be adjusted ;)