I liked that style!
I think this game is quite promising if you finished this game, i couldn't understand how to add ammo because i was running out of ammo and i died, lol.
You can press number 1-5 to buy ammo, tower, bomb....
It's too late to fix any bugs about this now, but it looks like the leaderboard isn't working. Otherwise, my score'd be up there! :(
Nice job vrety :) Iv played your game quite a few times now, I really like how you incorporated a space shooter, and tower of defense style game play. This game is really a lot of fun! I also am getting the leaderboard bug, I didn't do as well as Venetia though. lol I hope you continue to develop this game after the contest is over because I would play it all the time.
Good luck with the contest :)
Of course I will continue develop this game with more map, more challenge, more type of tower,ammo and mission. It may be a longtime, but I will complete it ASAP .