You won't find many games with the capacity to get you thinking about philosophy as effectively as The Talos Principle, but even if that's not your cup of tea, you're still getting a wonderful first-person puzzle as Epic's freebie of the day.
No, you won't be magically transformed into Socrates or Plato just by playing it, but you will invariably get to thinking about consciousness and its implications to living beings, the topics that yours truly obviously enjoys a lot.
The Talos Principle players wake up in a mysterious but beautiful environment, where an entity called Elohim gives them a true biblical task - explore the realms that were created for you but better not climb that tower or else.
Elohim, of course, is the name Hebrew Bible often uses to refer to god. Note the 'often' part, because there's a fair share of ambiguity here - sometimes it's a plural noun referring to deities - which already points at the exquisite work Croteam did in developing The Talos Principle.
Developed by Croteam and published by Devolver Digital, The Talos Principle launched in 2014 to rave reviews, regularly nailing the sort of scores that aren't exactly the norm for puzzle games.
It's not just the gaming websites that praised the game, as many fellow game developers chipped in, commending Croteam for the amazing work they did. Markus Persson, the man behind Minecraft, said The Talos Principle not only deserves the highest score in his book, but he also insists the game changed him, which is pretty much how most of the reviewers saw the game.
There are only a few more days left in Epic's 12 Days of Free Games, so we'll see what Sweeney and Co have in store for us today.