Thank you all!Wow, I'm really happy after reading your comments. I'l try to work on a post-competition release as soon as I have some free time. I agree with most of you that controls a bit clumsy. But I really don't find a better way to do it. At first I planned to use arrows to move and [QWE-ASD-ZXC] square of keys to say directions... but they were really too many keys so I changed it to mouse control... If you have any suggestion please write it down. Many thanks for all your hints, I'll try to put them in the next release.
And congratulations to all the entires, I had fun in playing your games.