Not too long after the initial Early Access release that was back in August, GrapeOcean Technologies has released a Linux version of their party-based RPG Black Geyser: Couriers of Darkness.
Read the full article here: https://www.gamingonlinux.com/2021/10/party-based-fantasy-rpg-black-geyser-couriers-of-darkness-gets-a-linux-version