There needs to be "difficulty" setting because i had to start it 4 times just to see what the goal and how to reach the goal in order to play correctly. The instructions for this game should be more detailed and at least a quick demonstration or walk through just to see how to operate the game. Points were given for the creativity of the game and the challenging aspect of it. I dislike games where the win is basically handed to you, even if you dont know what your doing. With this game, you really have to strategically make your moves and take into effect the cost as you progress on. THis needs a little more work but i know it can be done and made better.

Because it's hard to figure things out initially (as with most new games) we absolutely need a pause button. It would also help to have various difficulty settings: Hard, Medium, Easy, and Sandbox. In its current state the game is frustratingly impossible for me. One thing I would strongly suggest is increasing the strength of the alien waves based on how many probes the player has sent out. so players with 0-3 probes sent will have an easy time and be able to safely upgrade their ship. Then, as more probes are sent, you will be able to upgrade more areas of the ship in an incremental fashion. Another way to control difficulty is through stages or through areas of the world map. Implementing a world map should help players feel like they are accomplishing something as opposed to being crushed to death.