Hello, I am a newbie game dev and I recently started working on my own game with this same concept, where you attack a ship with asteroids, but the gameplay is quite a bit different. And guess what, I thought to name it Dioretsa as well! I figured I should google the name and see if anyone else used the name for a game. Looks like you had the exact same idea. Do you mind if I use this name for my game as well? It is my first game, but I am planning on putting it on Steam.