The puzzles start off very strong and slowly add new elements. Each puzzle is distinctly different from all others. The mechanics are obviously repeated, but I was amazed by the sheer variety of puzzle solutions. I don't think I've ever seen a puzzle game put this much effort into making each puzzle distinctly unique. This game has over 100 puzzles, so that is quite a lot of content! The hidden collectibles are very difficult to collect but it is always rewarding when you do find the secret entrance and pick up a golden star. Often you can see the stars but not how to get them and it can occasionally be frustrating when you simply can't find the solution to open a door. I started playing Road to Gehenna immediately after beating Talos Principle, but pretty much gave up after a few hours. I was able to solve every puzzle in Talos Principle without a guide and found all stars save 3 without a walkthrough. Talos Principle has some hard puzzles, but not impossible. Road to Ghenna is absolutely brutal. Early levels were taking me upwards of 30+ minutes to complete. 30+ minutes of pain! I felt like I needed to look at a walkthrough for nearly every puzzle, but I refused to do so. I started playing the game just one puzzle at a time rather than long sittings, which worked for me. The puzzles seemed much easier once I got to the third of the four worlds, and I was able to solve more than one each sitting. This DLC will not be fun for everyone who enjoyed Talos Principle. Only recommend for the most seasoned of puzzle-solvers, or those that have no qualms about using a guide to beat the entire game.

The Talos Principle is one of the only few games that I can say without rolling my eyes and cringing that this is art. If any games tries to be art, it should take hints from this. Story is actually deep, but without feeling pretentious or downright insulting intelligence or sacrificing the gameplay like The Last of Us did, where the story was great and worth telling, but gameplay was incredibly average, at times horrid, stealth game. It is physics puzzle game with some platformer elements and difficulty is just right, for someone that played Myst or grew up with Sierra/Lucasarts adventure games that is, because it requires a lot of critical thinking and it feels really rewarding. Music in this game is beautiful, but what is absolutely best in this game is that it is a game and developers are aware of it, throwing at you a lot of funny and fun easter eggs and references to other games or movies. That's actually great and it is nicely balanced. This pack is awesome, because it also has Road to Gehenna, expansion adding a few more puzzles to solve and kind of prequel story to the main game. Overall, I can't recommend this game enough. It is a game first and art second, showing that you can make a game that is art, and not art pretending to be the game, like many walking simulators try and fail. This pack is easly 40 hours long, so grab it on sale and enjoy it.

Road to Gehenna expands on the story told in The Talos Principle, offers an entirely new perspective, reveals more about the ending, and adds at least a dozen hours of gameplay. They don't make expansions like this anymore - this is the real deal. While the main game focused more on the struggle of the individual, the expansion explores the role of the community and adds some clever mini-games (Zmey Chernobyl... priceless). Puzzles take a quantum leap in difficulty, but also add a whole lot of original problems that force the player to use old equipment in new ways. The difficulty is real, borderline frustrating at times, especially for puzzles about crossing the beams, but solutions are still fair and embarrassingly easy once the whole thing clicks. Road to Gehenna is a must play for anyone who enjoyed the main game, and those who didn't. Together, this pack is the definitive edition of The Talos Principle.