I think you really nailed the NES style with this game, from the art and sound effects to the simple yet addictive gameplay. In terms of the shooting, I get that it might be difficult to keep clicking the left mouse button a lot to take down the enemies as it could get painful on the index finger, and it might help if the enemies had less health. But I do get why the shots are limited to one per press, and it still led to a challenging yet fun game overall!