Strange i as well, but i don't have this problem. Can you show me screenshot?
pressing alt+enter (full screen mode) just adds black bars to the sides
Hmmm Game have to start in full screen mode no windowed(maybe bug unity). I will add launcher and you can change size.
Check out
Thanks, it helped. Issue was with resolution aspect ratio, by default it started in 1024x768, and only this part was seen. Changing resolution to 1280x720 helped. Will check the game now.