Good news folks! I've found on my server Slendertubbies 1.2.3 project files! It's great opportunity to resume development of Slendertubbies! I'm plannig to update look of my game using new assets. Slendertubbies will stay on Unreal Engine 4. I'm considering about remaking existing maps. I'll try to restore & upgrade missing features from 1.3.0 version.