This game is attempting to provide something in an empty market. However, I would like to give some advice on how it could be improved. The questions should be part of the game rather than in between the game. The flying objects could've had answers on them for example and we have to shoot the correct answer. Which would require a more precise shot than the canon in this game provides. Thank you, keep up the hard work, hope to see an improved version in the future. I've been looking for a game to study custom material for a long time and I'm glad to see someone making these types of games.