I made a little starter kit for this jam using Love2D. There's not much to it, just rendering to a 64x64 canvas, then rendering that canvas on top of the game window all stretched-out like.

https://love2d.org/

https://github.com/logorrhea/lowrezjam-starterkit-...

Hope it's helpful!

Edit: Made a few updates, including the addition of Josh Riley's Minimal Pixel font (see this post).

Good stuff, thanks for sharing!

This is brilliant, thanks! I was trying to do the same sort of thing by hand but yours is way better :)