I've copy pasted this from another review because it says exactly what I want to say:
"The game content is generally alright, however, they stopped supporting GNU/Linux (without prior notice!), which makes it impossible for me to play with friends. I find this move a complete betrayal of my trust and support, and would honestly rather get a refund than support a dev/publisher that thinks this move is an option, especially when they build on an existing Linux friendly engine - Unity."

I've copy pasted this from another review because it says exactly what I want to say: "The game content is generally alright, however, they stopped supporting GNU/Linux (without prior notice!), which makes it impossible for me to play with friends. I find this move a complete betrayal of my trust and support, and would honestly rather get a refund than support a dev/publisher that thinks this move is an option, especially when they build on an existing Linux friendly engine - Unity."