Chat and also play some card games as rats.
Download the .zip file, right click it and extract it. Open the .exe file.
If you want to host you need to download the server. To connect to the server you need to enter the ip to the server-computer in the game settings. If you want to be able to connect over the internet (not LAN/same computer) you also need to do port forwarding and use your public ip. To connect to a server in the same network you can just use the server-computer’s ipv4-address.
The rats are made by a fellow called Mossbrick (very talented and famous artist).