Hi all

I have a question regarding LowResJam 2021, concerning the 64x64 resolution limit.

So if I understand this limit correctly, it means that 1) all sprites must be minimum 1x1 pixel in size and 2) all movement must happen at minimum 1 px shifts and 3) all features (sprites etc) must be aligned to 64x64 grid. This means f.ex. that 1x1 px objects must be rotated in 90 degree steps. Because otherwise (less than 90) they would "spill over" to adjacent pixels. I hope you can make sense of this rather tedious explanation :) 

Is my description above a correct understanding of the 64x64 limitation? I wonder this because I see many projects that do not comply with above. 

Thank you so much for your help.

Have you checked out the examples on the Jam Page?

As long as your render target is 64x64, pretty much anything goes.
Sprites tend to have artefacts if rotated at weird angles but this isn't against the rules or anything, this would be down to one's own design to remedy. I think you may have been referring to sub-pixels here? This only really happens if you're not actually rendering at 64x64... You may think you are, but some engines (like GameMaker, for example) actually render at window rez even if you've set everything to something lower. That's fixable but will depend on engine.