KWAAN is a game we completely missed covering, it never appeared in Steam's new release section for Linux either as the Linux version was released after the initial Windows version. It's a weird (but interesting) looking 2D online RPG.
I only found the game by checking tags randomly on my dedicated Steam Machine, which I'm still doing a proper write up of at the moment.
About the game
KWAAN is a hybrid of RPG, online ecosystem management and pixel-art creativity, where helping others and respecting nature are essential to survival ! At the heart of the game is an organic, evolving ecosystem, players must help each other to prevent the end of the world and uncover the many secrets of the god tree mysterious origin !
It sounds so weird, that I may actually have to give it a go sometime.
Find KWAAN on Steam, it's in Early Access so beware of bugs.