this is super cool! I love the top down perspective and the graphics. I had a lot of fun playing through this and considering your design choices. That’s because I’m developing a similar project for the Game Boy Color. We made a lot of the same sacrifices - a melee, grenades - for a streamlined pistol + AR experience. My project is a real GBC rom and I even got the warthog working! Check it out and hopefully you have as much fun playing it as I did this.