Really fun game man. I did two playthroughs. I found a strategy that worked for me (I didn’t really use the cannons, just mines) and beat it, but I really wanted to get the Love Hot, so I played it another time and got it.
You did a really good job recreating that old 90s style feel, all the way down to the UI and the sounds.
It was a little on the slower side, I assume because of all the cubes in the tower? There are things you can do to optimize that. One trick is building those cubes all into one mesh and just rebuilding the mesh when one gets destroyed.
All in all really fun game. Thank you for sharing and I’m sorry to hear about your grandfather.