I agree that small puzzle games are not really handy to do for us, but only because those games are focussed about artwork! Not because they're easy to make. We have only talents in programming as far as I see, and that will result in a less appealing game to see. Yet that need not to bother if we think of something technically "amazing" that's visible to the user.

A climbing, running and hanging dummy model isn't really good though.
We can't do the first link for we probably have no good models or levels.

The second video is less about environment but more about particles. Particles is an art too. Yet that can be overcome.

The third video looks bad . Quite a low standard if we'd be content with that. It's equally hard to make a bad looking puzzle game. I'm sure we can do better.