The Linux-version of the RPG/Strategy-Mix Tower of Time has received a very big (3 GB in size) patch on Steam:

Hotfix 0.6.2.1334 and Linux Patch (big) Hello All, We just released a hotfix 0.6.2.1334. The following issues are fixed: Issues Achievements will properly unlock Linux We also updated Linux build. We have tested it on Ubuntu 17.04. If you have a different distro and run into troubles with cinematics, please let us know. Thanks. Thanks for your feedback and reviews. Cheers, KM P.S. One of the Primal Beasts (in the screenshots above) is also very excited about this hotfix, since you will finally be able to test your skills against him in the final Beast Challenge

Source: http://store.steampowered.com/news/?appids=617480