You can show the game at GamesCon 2026. I uploaded a new revision that fixes a bug in the game where the boss at the end of Level 2 gets screwed up after you get a game over in Level 4.
The reason why it took me so long was because I was busy getting object placement to work in Tiled level editor. I was also busy code-golfing it to take up less ROM space so I don't have to jump between ROM banks as often.