I just woke up and I guess it’s time to start making a game.

I came up with a simple idea – my game will be a top-down shooter divided in two phases that cycle every 10 seconds. In first phase both you and your enemies shoot bullets and can only hurt each other, but in second phase player and enemies are rendered harmless, all bullets can damage everyone, not depending on who shot them and they’re attracted to player who has to dodge them and possibly guide them into enemies.