This game is so creative! I really liked the going-back-to-worse-graphics aspect of the story, and narratively it was pretty interesting!
Though the real highlight here are the undertale and PvZ-style minigames! I think that both of them are crafted fairly accurately, and are fleshed out really well.
I found the undertale minigame really difficult nearly to the point of quitting. I think part of that was the fact I haven't played undertale before, and it seems like a fairly difficult and long level, and partly that unlike undertale, it didn't seem to have any invincibility frames when you take a hit, so I could quite often take 20+ damage points from getting repeatedly hit multiple times very quickly.
For PvZ however I played that game my entire childhood so it was a blast! I do feel like it was a tremendous effort recreating it in 8-bit, and honestly just very cool!
Thanks so much for taking part in the jam and creating such an interesting game!