You shouldn't need to keep the coordinates, why can't you just call the routine that draws Reuben when pushing the blocks? Are you redrawing the map every frame? Really i'd think you'd just not update the buffers and just erase the blocks. It's looking great though

Ah ok cool. The issue with grayscale setup screens is that people can just set it to the lowest quality possible then mass level up in 10 minutes for an easy game finish. I once finished Reuben Axe in 30 minutes by doing that. But of course sometimes it's inevitable because of Axe limitations and even ASM programs had the same issue in the early grayscale days (Desolate, for instance)

I am busy this weekend so I doubt I would have much time to do 4 lv grayscale sprites, but I posted color ones the other day so they could possibly be converted easily. Else you can probably use 3 level ones converted to 4 shades of gray as placeholder for the time being to prevent lack of sprites from halting your progress.

Oh I was talking about the fact that Desolate gameplay speed varied from calc to calc, sometimes even two 83 calcs having different speed

Aah ok. What routine do you use?

It should have immune/weak against but in the original it didnt due to a bug

And IIRC nope

Yes

Speed looks pretty good to me. It can always be fine tuned later though.