I can understand the frustration of the negative reviews (who lost save progress), but for anyone starting fresh this is a great game to play solo or as part of a family.

infinite puzzle at least i haven't found the end of the yet

I played the game when it came out. It had quite a few bugs but otherwise it was a fun puzzle game. Originally it was a multiplayer online-only experience. The servers since went offline, and luckily (or maybe due to the many player requests) they allow offline play now.
However, they decided to not save any of the online progress of players unless you did that by hand during a one month period from when they announced it until the servers shut down. Since that was in last October, and I wasn't around (and their announcement title was totally misleading as well, not at all hinting to anything similar) I lost my 47h progress. And even though I wanted to finish the game, I really don't want to start again anymore.
The game itself might be playable but I wouldn't want to support a developer that disregards players this much.