If you are a fan of non-liner explorers like Metroid and Castlevania(and puzzles/gadget use like Zelda in a way), then you would like La Mulana. The game takes place is a massive ancient ruin with multiple varied sections that are interconnected. To proceed deeper, you have to solve a wealth of puzzles that are either simple, or requires a bit of assistance from hints/clues you read on tablets. Aside from puzzles, there's a ton of upgrades and tools that are either required to proceed or just for making you more powerful.
The theme of the game is like Indiana Jones. You are an archeologist that starts off with nothing but a whip and a mobile laptop(in which you can upgrade with different software you find or buy). The intended feeling of the game is putting yourself into the shoes of an explorer that is out to unravel something unknown and vast.
Also without revealing too much, the background of the story is about a goddess(refereed as The Mother) that fell from the sky, landed on Earth and gave birth to all life(humans and demons I think). The ruin was built by these ancient people as an effort to return The Mother to the skies. As the society got bigger, so did the cultures and methods. Left behind in these ruins are evidence of wars, sad stories, and even attempts at technological enhancements that either failed or was completely abandoned due to conflict or migration. On the surface one may not see these themes, but research and inspirations put into the making this game is well put together.
The graphics are completely remade and several puzzles were made easier to solve(the controls are also alot more user friendly). Both version are great, but I recommend the remake for casual gamers.
Here's some videos.
Promotional Video 1
Comparison Video (old vs new)
Video featuring some clips and and music of Hell's Temple (DLC… it's not out yet @_@)