cosmic charm
I made the logo for my game like I would a normal illustration (so on raster layers), and I wanted to ask if UI HAS to be made as vector? Or can I just make normal illustrations? (included my logo because maybe it matters what I'm going for, I'm not sure)
viral ore
What "ui has to be made as a vector" means in this context?
Your logo can be just a image (png, jpg, ...). Lots of games do that, there's no need for it to be vector (svg, I assume)
Just consider having a image with enough resolution to not look bad in different resolutions (1080p, 4K, etc)