The game provides dozens of well-designed puzzles, ranging from easy/tutorial ones to the very challenging DLC ones. And on top of that, there are a lot of secrets to discover, both in the form of stars (very hard-to-grab collectibles) and easter eggs all over the place. Despite being a puzzle game, there's so much more to see and discover for yourself that limiting yourself to experiencing the puzzles alone would be a disservice to the game. Even enjoying the scenery and the chill music that accompanies you throughout your journey. The story, narrated through the use of audiologs, datalogs and sometimes even chatting with a computer, is thought-provoking and compelling, thanks to the convincing work of the voice actors, but also melancholic, witty and deeply ironic at times. While not necessary to complete the game, it does contribute to its charm. It's become one of my favourite puzzle games of all times, to the point that I bought it two times! Highly recommended, even if you're not on a gaming rig. The game plays fine and it's very well optimized.
