"3DC" is an extremely badly made, hamfisted attempt from an unqualified, self appointed healthcare professional to shove their own interpretation of mental health issues such as depression at children. If I was a parent, I wouldn't let my kids near this Spanish snake oil pusher. Certainly, this is barely, if at all a game, it's just a delivery mechanism for armchair psychology.
Trying to address serious issues such as mental and emotional health through the medium of video games is misguided and can be harmful. While it's plausible to suggest the intention was noble, this can do more harm than good.
The "developer" here is not a professional in areas of mental health and social problems, and when they use video games to pretend they are, this is not only utterly ineffective, it can be harmful.
It's my opinion that it's improper to use video games to address mental health issues. Apart from the harm such hamfisted attempts at addressing social problems can cause, this offers zero benefit to PC gamers.
People suffering from health issues or other social problems should seek out professional help rather than going to crap shovelware video games attempting to get attention/fame by exploiting such problems for their own benefit, as is the case here.
The graphics here are particularly awful, so bad that it actually stands out as one of the worst looking games on Steam. Quite an accomplishment.
The graphics are just a bunch of really low quality assets badly hacked together to make a minimum viable product, but the purpose of the developer had nothing to do with creating a decent game.
It's a big contributor to the failure of the game to attract gamers despite having no up-front cost. Gaming is a primarily visual medium, and if developers want to succeed, they must understand that it's not an area for compromise.
Now on to pricing and value for gamers.
This is "free" enough (not every "free" game in the "free" section is truly free, there's usually some hidden price tag), at least you won't be expected to spend any more money after you download this, but just because something is free doesn't mean it's good, and the cost of a game is more than just financial, your time is valuable too.
The poor quality of this game is also reflected by how many people spent time with it. At the time of this review, SteamDB shows the game all-time peak user count was only ONE person. That's right, only one person ever used this at a time. When I tried this for the purposes of reviewing it, I equalled the peak user count for the product. OUCH.
The only user activity occurs once or twice a month, presumably someone loading it up to see what it is then quickly uninstalling it.
Considering there's over 130 million gamers on Steam and well over 100,000 games for gamers to choose from, the overwhelming lack of interest in this low quality game is to be expected.
Bearing in mind that free games don't add +1 to your game collector count, should you bother adding this to your library and downloading it? What's the verdict?
Definitely not. This isn't worth it. I'm paraphrasing another reviewer here, but this should be a paid product... they'd have to pay people to download it.
