"The Unfolding Engine: Paint a Game" is not a game, first and foremost, the developer put this in the games section instead of the software section, whether through incompetence or a deliberate intention to mislead gamers is unclear. Anyway, they did this then they abandoned it, roughly a year ago.

This is basically a 2D retro platformer construction kit (ugh, that sounds like a "build your own lung infection kit" kind of application), the gimmick being you can play as you design the levels. The developer incorrectly and misleadingly describes this as "2.5 D", it's not, it's 2D with parallaxing. Which is not at all close to 3D or even true 2.5D. It's also garbage for a few other reasons, if you decide to pretend this is a game (which it doesn't really qualify as that much).

This features really godawful, lazy pixelcrap "art" instead of real graphics. It's hard to say if this was because the developer didn't have the skill to do the job of creating 3D visuals, or couldn't afford to hire someone who does, but it also doesn't matter. What matters is that this looks bad because of that decision, and that's a major deterrent to gamers. Games like Terraria and Stardew Valley succeeded despite the bad graphics, not because of them.

This is only free in a rudimentary sense... the developer has their hand out for a "donation" for this as you're expected to buy some extra soundtrack DLC from Steam... digital panhandling. Like the homeless guys who splash dirty water on your windscreen at the traffic lights. No thanks.

The developer also indicated they would add a price tag to this if they ever finished it, so the good news is that they won't ever finish it.

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?

Nope. This isn't worth downloading. While this didn't cost me any money up front, I still feel ripped off.