DANGAN GB: by Snorpung. It's a new shmup for the GameBoy for its 30th anniversary. I am awful at it, but that probably means it's really good. It also feels super faithful to that console, and you can tell it was lovingly crafted. snorpung.itch.io/dangan-gb
Dead Pixels II: Straight To Video (Demo): by CSR-Studios is going HARD on that early 90's nostalgia. It's a side-scrolling shooter with procedurally generated cities, enemies, and weapon spawns. With deep customization I think the full release will be addicting. https://csr-studios.itch.io/dead-pixels-2