Hi there! Whole lot to go through here so I wanted to wait until I had time to go through it all and respond thoughtfully -really appreciate all the helpful feedback!
Lots of great suggestions here!
Tutorial: I'm personally not a fan of tutorials but planned to add more hints to guide learning might add one
Removing orbs: completely agree and have this on my to do list -just haven't gotten to it yet (I'm juggling several other projects at the moment)
A note I mentioned in a previous update: the electric pegs aren't functional yet, they will link to create a sort of electric web -or at least that's the plan at the moment
Upgrading to a random peg: might be worth experimenting with! That is a fun idea!
Difficulty/progression: I have only the original level made for the jam at the moment with plans to add a lot more levels to progress through -I also want the levels to sort of change and evolve as rounds progress. Also, the orbs hp does scale with each round but I was afraid I made it too difficult so scaled it back -I plan to make goals easy and difficult to add more fun here. Also, in a similar style to the bloons games, I plan to add specific immunities to orbs in a future update (e.g. a red / blue one is immune to fire / ice) pegs
Also, as far as curses or specific events: I LOOOOVE THAT IDEA! That sounds really fun and I've added it to the ol todo list! :D
Healing: that's a very good point -have made note of this and will think on it
Limits on pegs might be needed in a level like this -but in future levels there will be more limited layouts that will be more difficult to spam
Bug: the turrets will shoot at the closet orb so they will eventually shoot stuck ones if there is nothing else to shoot -that said, I should have still sloped the corners so nothing could get stuck there -however, I do have plans to use the corners for other things, like bonuses and such
Anyway, the game is still very early in development and thank you for these amazing comments -really appreciate it and after reading through all this it's got me all inspired wanting to hurry up and get back to working on this game! :D Thanks again!