Want to beat that expert track while the teacher isn't looking? Keep these pro-tips in mind:
If you are playing in a classroom, keep the window small enough to see your surroundings but large enough to manage your towers. A great trick is to keep a legitimate tab open (like a research paper or Wikipedia) behind the game window. If someone walks by, Alt-Tab (Windows) or Command-Tab (Mac) instantly switches you back to "work." btd5 unblocked games