it was a good start
i noticed some bugs within the game-
1.when you try to move the spaceship sometimes it will automaticaly move for you
2. Im not sure if this was a bug or not , but people who are a terrible shot .Could you perhaps add like infinite or like a sutible amount of rounds per level instead of one round for a space ship because its more then likely going to miss.
3. the time limit. the timelimit drove me crazy especially after the spaceship blew up could you reset it each time you lost a life so that way you have a better gaurntee of making it to each round.
those were some of my biggest concerns,
but overall all i thought it was a decent game and a good start.