Cool take on the theme. Tower defense games are usually a surefire win for entertainment. However, there were a few frustrations that let this fall a bit short for me. Firstly, the map just feels too big. For a jam game, it feels like this game is asking a lot of your time to fully get into what it has to offer. Secondly, the building is unintuitive and tedious. Why not just click instead of pressing E? I failed to build things so many times even knowing I had to press E just because it doesn't make sense. Finally, I'm not sure how to actually win this. I know the description mentioned something about building the seals, but I got 50 skulls and found a cave, but I couldn't build the seal on it, around it, or anywhere for that matter. I'm unsure what I was missing.
All that aside, I really enjoyed this art and music in this entry. That's the whole reason I clicked on it. I'm not sure why you set the whole thing inside a retro computer monitor (maybe your original design had a weird aspect ratio? or you wanted the aesthetic of an old computer game?). Still an overall cool experience. Congrats on finishing this in just a week with such polish. Well done!