Thanks for the advice ,for Alien Games tries clicking the screen then pressing enter ,if it still doesn't work here's a gameplay while I'll try to fix it :
Heh, I will admit, it has a certain charm. Kinda reminds me of things I made years ago with Clik & Play. I think if this had actual levels to explore it would be more appealing, as the arena is pretty basic. Also, a delay between enemy shots would be good.