Yeah, the screen size made things difficult for me too. And I couldn't quite figure out the controls and using the mouse in that way didn't feel right, maybe could have at least used the arrow keys to change the direction of the player? There were some sort of instructions but they were difficult for me to read as it was blue text on a blue background. Wish I could figure out the game play more but basically I kept getting stuck out in space as I ran out of the "bullets" that pushed me around while trying to figure out the controls.