Hello big soldier!
Thanks a lot for the feedback again. It's a pitty that the window minimising thing didn't work. Your PC is resisting the Zombie hordes, btw!
Optimizing is one of our main priorities, and that will include a huge graphic improvement that we eventually manage. Also, zombie types will change. And yeah, RTS is something we did know from the very first moment we start designing this game that must be added! Please do not hesitate to post all the comments you need, we'll be pleased to answer you. Every soldier demands a good answer.
Please, do continue with the mission!