"Ultimate Rock Crawler" is an extremely poorly made "I can't believe it's not an asset flip" physics based driving simulator that fails to do the one thing it's supposed to, which is to accurately model 4WD driving over rocks. As a game, it's even worse, it looks bad, plays bad, and isn't really worth investing time into.

This has some really mediocre looking graphics that will understandably be a turn off for a lot of gamers, and it's a big contributor to the failure of the game to attract gamers despite having no up-front cost. Gaming is a primarly visual medium, and if developers want to succeed, they must understand that it's not an area for compromise. You deserve better than compromises.

It's free... now, but it wasn't before. The developer was charging $1 USD for this. Price barriers, especially on low quality products, can be a direct cause of failure. It's a nice gesture for the game to be given away for free, but it also tells us that the game wasn't good enough to succeed as a paid product.

Even though this is "free", it failed to appeal to the 120 million+ gamers on Steam. SteamDB showed the game peaked at only 5 concurrent players... this is a dismal public reception. This was so bad they couldn't even give it away.

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?

Not this time. This isn't worth downloading. While this won't cost you any money, you get what you pay for, and sometimes, even when the game is free, it's still not enough.