This review has spoilers.
This game was so bad that I decided to write my first review.
I played for about twenty minutes, and then it froze. In that time I got through the prelude and finished the first dungeon and fetch quest. To be honest, I nearly dropped it when Loving Wife died moments after her simpery and bland introduction, towards the end of the tutorial. Sluggish text cannot be skipped. UI design, even in the configuration menus at the start of the game, is poor. Conversations awkwardly remain on-screen even after you have moved to a different room, leaving no context for the hanging text. Maps are too large and often leave you wandering through a featureless landscape with nothing of interest to look at on-screen, scrolling for page after page. Other design issues, such as unfair/pointless traps, make the gameplay boring.
For me, the storytelling didn't work very well, either. From the first looks of it, the world is pretty interesting--but incoherent. Typos abound. Long sections of backstory are delivered with little context, first in a "meet-the-characters" way reminiscent of good old Red/Blue Pokemon, and later in long blurbs that seem more like a poorly-kerned emotive flash game or visual novel.
An interesting fact is that when it comes to game writing, the limitations of the user interface play a crucial role. The writer needs to plan for line breaks so that moving to the next text window is a pleasure, cutting out as many words as possible to keep the whole message on one screen and so that clauses are not split.
To make a long story short: Two Brothers, although individual elements are very appealing and promise something great to come, is riddled with and has serious structural flaws, still has game-breaking bugs, and suffers from poor design in general. This is not a good game. Do not buy it at any cost. I sincerely appreciate the work that the developers put into it, and wish them well with their next game. The graphics look nice, he indie market is hard. That said, $15 is an unacceptable price for a game with so many bugs and so little overall polish.