For this reason, it is difficult to put a figure on just how much a game app will cost to develop, it depends entirely on how complex you want to go. The cost could range anywhere from $10,000 to $250,000 and beyond. Think about your first encounter with a video game and how it looked.or this reason, it is difficult to put a figure on just how much a game app will cost to develop, it depends entirely on how complex you want to go. The cost could range anywhere from $10,000 to $250,000 and beyond. Think about your first encounter with a video game and how it looked.