I have some flashbacks about an old DOS game after watching video of this game, but I can't recall it's title, I probably played it in the first half of 90s. It was also about ascending a tower with solving some puzzles, so I guess maybe it was an inspiration for this game. I remember it like a rather hardcore one, but I was a kid. Can someone remind me how this old game is called?...

I can't see myself purchasing these games without achievements.

It would be great to have Steam achievements and Steam Trading Cards!

I love the idea and design of this game. When I noticed that optical illusions were part of "solving puzzles", I though I was gonna have a nice brain teaser experience. Was extremely disappointed. I Get why the game has very positive reviews, it's an enjoyable experience, but I was expecting a puzzle game. This game instead is extremely linear and easy without much thinking required to complete the levels. If you check my total gameplay time, it's 2.,8 hours. That's what took to complete the whole game...

I remember when mobile games had a good story in it, like Brothers in Arms 2 or Gangster.