Your Computer Might Be At Risk

I enjoyed the game but most probably wouldn't have gotten it if I knew it was mostly number and "logic" puzzles. Some of the puzzles made leaps in logic, forcing me to bruteforce them (The Painting puzzle and fibonacci sequence). There were some grammatical errors in the english version but you'll still be able to understand everything well enough.
Storywise I enjoyed it as more of an artsy experience instead. I was able to get 2 out of 3 endings and after trying to 'puzzle' them together I still don't know if I really understood them. Can't find the last part to the third ending so I just gave up at that point.
Should you buy it? If you enjoy little number puzzles? Yes. The story itself is short and a nice artsy experience.
Would I go out of my way to tell people about it and that it is a must play? No, while the game was an enjoyable experience for me personally, I can see people complain about the price and the content it delivers.
edit:
I went back to it to find the third ending.
Might be spoilerish:
I was disappointed by the third ending. I thought it would clear up more details, but it is the most lackluster of the endings.

Great Indie game in which you are part of a strange and certainly dark story that progresses as you perform tasks based on puzzles. The feeling I experienced is that of being in there living with the protagonist the plot, so I can only praise the atmosphere and the immersive ability of the game, it is in my opinion its great strength. Its price is really good, it guarantees a very satisfying afternoon for any lover of games of the genre.
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Gran juego Indie en el que formas parte de una extraña y ciertamente oscura historia que avanza conforme realizas tareas basadas en puzzles. La sensación que experimenté es la de estar ahí dentro viviendo con el protagonista la trama, por lo que no puedo otra cosa que alabar la ambientación y la capacidad de inmersión del juego, es en mi opinión su gran punto fuerte. Su precio es verdaderamente bueno, garantiza una tarde muy satisfactoria para todo amante de juegos del género.

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A well-designed, tricky and intriguing puzzle point-and-click game. The aesthetic is simple, yet pleasing to the eye and the story is a vague affair of penance for your past and living with the consequences.
Unfortunately, because of this, the story suffers in the way that so much is left unanswered you don't really come out the end of the game any wiser than when you started. This does not negatively impact the gameplay though, with the actual puzzles being some terribly-tricky brain teasers that give you a wonderful sense of accomplishment when you finally figure them out - and there's a great range in the type of puzzles too including logic, deduction and mathematics. The sound design is also stellar, with an unsettling atmospheric synth soundtrack to accompany the mind-bending puzzles.
When asked to review the game I gave it a quick pick up after install for 10 minutes, then returned back to it at the weekend and couldn't put it down until I'd finished it, it was addicting to the point I was disappointed that it ended where it did, though there are 3 distinct endings for you to achieve which primarily seem to be based on how you choose to escape right at the very end. You could probably achieve these via multiple playthroughs, however I was able to achieve all three endings by just reloading the final save. There are odd choices to make through the game though (such as picking between two different cards in chapter intermissions) that could influence the rest of the playthrough, however these are often just pictures with no context so it's unclear what these choices mean at the time, or if they do indeed have an impact on the following chapters, without committing to a subsequent playthrough, which I will probably return to complete at a later date.
While the puzzles can be difficult to understand without context, there is the option of a hint system in the games settings which will give you an idea of what the puzzles are asking you to do that you can enable (which I unfortunately had to lean on after chapter 2) - but be warned, there's an achievement for completing a playthrough without enabling these hints, so use at your own risk.
There are the odd couple of grammatical errors in the writing particularly in the text chat on EVALINE, but for the most part it's well written enough that these instances are few and far between. I had issues with screen tearing and the odd bug where if I reloaded a save some events wouldn't trigger, such as reloading a checkpoint after inserting the USB drive in to the computer, I would not get the EVALINE message telling me to reboot, no emails would come through and trying to sleep would just tell me I couldn't sleep while there was work to be done. The only resolution that worked was completely shutting the game down and relaunching, which then prompted a work email to be delivered so I could continue. Chapters are short and save points, while automatic, are generously spaced out enough so you're not really losing much by loading your last checkpoint though, so this wasn't a huge deal.
Since I finished the game, however, there was a release-day update that appears to have resolved the issue with screen tearing, so maybe they've stamped this bug out too.
However, I have thoroughly enjoyed my time with this game, for what little of it I have played during my initial completion. If you like puzzles and the thought of what amounts to essentially a digital escape room with a psycho-thriller flair, then pick this up. Now I can see how much the game actually costs, I can happily say it's worth it if you like stylistic and clever puzzle games, though by nature, replayability suffers when you know the answers.