Version 1.2.0 (Milestone) is ready to update.

The current version 1.2.0 adds new house models, tree models, new weapons and some new gameplay.
Fixed some bugs.
Change the two-player cooperative mode to a single-player stand-alone mode, because now it is very possible for a single person to play computer games at home, and the way a single person controls the mouse and keyboard can further tap into the game's control potential, making players more comfortable.