I think in heroic and iron challenges, you should be able to use all towers you've unlocked so far, not all the towers that are unlocked up to that level.
In the sequel there should be an evil wizard who resurrects the demons. making them harder to kill. Now there are 4 bosses! Also, wizard should change landscape.
I think there should be art room where you can make paintings and if its good enough, youll impress the artist... giving you a new hat! you can also sell paitings for money, by buying the art counter from the pingmart. Please add likes, its totally awesome and developer has to see it!
I think there should be an arrow near the place list to access more places. To make this useful, there should be way more places to visit. Please add likes if you want a way better game and want the developer to see it.
hellkillerx2 and beast55554, let me make your lives easier. You can sell your levels for money. It would make 50plusers' lives easier. and it adds onto beast55554.
I also think there should be a train station so that you can travel to other places. In other places, you can get jobs. Raise a family, maybe. Get access to more food other than fish. C'mon. It'll give a kick into the game. and lastly, we seriously need music in other places other than the movies.