SumZero 1.0 (Windows) Cost: $5 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions SumZero 1.0 (Windows): SumZero is a strategy game that will help you to develop your logic and mathematical abilities, is educative, amused and can be used by people of different ages