I emailed the creator of mote-m asking if there will ever be any new towers in a future update and this was his response: Hi Greg, There will be an update coming next week that is just a bug fix for the high-scoring bug. After that there is one more planned update to introduce a few new towers and features. This will be version 1.2. Any towers in particular you'd like to see for version 1.2? I'm always open to suggestions. I suggested like a poison/acid tower that would do continuous damage but it would deal very little damage. I also suggested like a machine gun turret that would shoot very fast and have a short range and do little damage. If you want any kind of new tower he said he's open to suggestions so email him and you might see your idea in the game.