is it worth to download in the current version?
It is according to the two practically identical reviews (by users who are basically totally inactive) that were posted just today using the exact same verbiage, poor grammar, and spelling as the developer does on his Patreon.
Probably just a coincidence though, right?
Maybe the dev's third unfinished Kohona Training game will be the good one. Or maybe the fourth!
(Yes, I'm getting a little sick of shady devs with empty promises all over the place lately. How could you tell?)