Has it been two years? I guess only one and a bit for me
It's growing into an impressive game library for such a niche interest group.
This one definitely comes across as very polished, Uze. It looks like you had enough spare room without the music to avoid cutting any presentation corners (I like the presented by Uze logo). 50 levels is huge for a retro game (not unlike Lee's Sokoban). It doesn't seem to suffer from not having music. I don't remember the C64 Pitfall version having music, and it was a favorite back in the day.
Overall, a very fitting Uzebox anniversary gift: another trip down nostalgia lane. Congrats, mate!