13 barn owls in a trenchcoat@hllizi it works with Proton Experimental (as a non-Steam game), so Heroic (already reported working) and Lutris should also both work if those are approaches that you're able to take.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.