This is only the pre-alpha concept stage. Partially working, but far from finished.
Unzip files to a folder and run the maintest.exe file.
To test out, click Host, single player not yet available. (allow through firewall when prompted)
Host on one PC (allow through firewall when prompted), and client with the other PC's. You need to know the hosts IP Address at this stage to connect to the server/host.
BETA and better Alpha coming soon.