I've contacted them by e-mail some time ago about this. They responded and uh... They've tried, okay?
"As it is currently, we're not planning on making linux-native builds as several internal game features rely on windows (or their emulation via wine)."
"We're aware that you exist, which is why some code is specifically written to be wine-compatible."
Well, let's just hope that eventually all the features will be cross-platform.