I'm an experienced programmer looking to collaborate with an artist/musician for this jam.

I've done games using OpenGLES 2.0 and Web Assembly before. I'm thinking that's what we will go with for this jam, since it's helpful to make it so games run in a browser window and we aren't necessarily going after the best possible performance.

Have a look at my profile, and you will see I've got some experience doing 2D games with pixel art. I have some special shaders and techniques up my sleeve, things you aren't likely to see if you use a third party engine.