Add godmode compatibility? (Like installing godmode adds godmode stages to the game?)

I kinda want to add a set of generic stages first (Forest, Techno, etc.), but after that, it could be cool to add custom stages based on overhaul mods like Godmode or Revelations, so I'll definitely keep that idea in mind!

Add tainted versions of the towers. But to unlock them you need to sacrifice a certain amount of other towers

I think its fun and cool but I think its bit too easy. I got to round 94 just spamming the same sigil tower in every space and quit shortly after because it wasn't getting harder. Im not exactly sure how to balance a tower defense game but i think giving out less money for kills and giving back more money upon selling/deleting them could be a good idea. Also I looked around for what each sigil did and was unable to find anything while i was playing it. I think giving descriptions of exactly what everything does in game would be a good addition.

Yeah, the balancing's a little scuffed right now. I'm planning on hard-coding a set of waves like Bloons Tower Defense does it, and micromanaging the numbers and enemy types to make a real difficulty curve.

As for the descriptions, I'm honestly running out of space to put things, so I'll have to see where I can fit the tower descriptions, but I do plan to put descriptions somewhere, especially for the future additions. For the time being, I pinned a post for Documentation that outlines what everything does, so I recommend using that to get a better idea of what the different towers do.

It would be very nice if this game used more isaac sprites, perhaps making the projectiles some of the isaac projectiles for more differentiation (where gluttony has teeth, pride has mom's eyeshadow tears, envy has the small envy guys, greed has coin projectiles, wrath has bomb wisps, sloth has ipecac, ennui has little gish tears, vainglory has spoon bender) and adding more towers such as buckets (from downpour stages, may increase mana cap or something), womb polyps (shoots in many directions, short range), skulls, etc.

I could totally see this as like an alternative to greed mode but with a different sin, perhaps Ultra Sloth or Ultra Gluttony.