The game is ok but there are somethings that are needed and others that can be improved upon. Decrease mouse acceleration. Please include 0-9 hotkeys for the towers. It is kind of sad that they are numbered but aren't hotkeyed. Include more interesting upgrades for the towers as they get higher level. (or at least give each tower an improvement at 4/5) Last is the money issue. There should be some upgrade/tower that improves interest rate or a bank where you can store money to get additional income. For now 3/5 until at least hotkeys for towers are added.