The original plan I recall was either a simple circuit racing game, a GTA 1 style game, or just a vehicle to use in a zombie survival game. Never fully fleshed out the idea.

Thank you, very much inspired to look at it again after seeing your latest game. I have several little projects from years ago that didnt go anywhere, saw your game then it just clicked.

I've learned a lot from this, poke(0x5f36,0b10) to allow even sized circles (would have saved me so many issues/space with other games if I had known this). n&4 == n%5 and n<<7 == n*128, which I *think* is slightly faster to run.

I had thought about using quadtree, and was going to see about having a go at implementing that after I got the globe in and first idea of chunking tested and then compare the two for speed. First the globe, then a shake to disturb the snow!

I am already doing some simple filtering (mostly moving static pixels to the spritesheet), but yes at the moment it is checking every pixel (skips empty elements). Eventually I would like to split it up into 3x3 to 5x5 chunks and only check the chunks that have had an update in the previous frame.

I got this completing the first level

Liked what you did with it!