When comparing Osmos vs Monument Valley, the Slant community recommends Monument Valley for most people. In the question“What are the best relaxing puzzle games for iOS?” Monument Valley is ranked 1st while Osmos is ranked 10th. The most important reason people chose Monument Valley is:
The gameplay for Monument Valley revolves around manipulating the environment in order to let your character proceed to the next level. It's similar to Fez in that it's obviously inspired by Escher paintings, requiring you to manipulate "impossible" architecture.
Specs
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Pros
Pro Great physics engine
Physics play a big role in Osmos where objects have their own gravity and the player needs to adjust and count for how their orb will be effected by their gravity and how to take advantage of it. By using an objects gravity to pull in ones orb they will use less fuel (bubbles) which is a limited resource required for movement.
Pro Great for touchscreen
Osmos has nailed touch controls as the game is completely based around them wherein players touch on their orb in order to have it blast out bubbles in the opposite direction in order to propel oneself in the directions they need to go.
Pro Beautiful visual design
Aesthetic is clear and beautiful. It gives necessary gameplay information in a minimal style that is just pleasant to look at.
Pro Relaxing soundtrack
The music is really soothing and mellow. The loop takes a while to repeat but it doesn't seem to bother me even after multiple repeats.
Pro The scenery is beautiful and incorporates clever Escher inspired gameplay mechanics
The gameplay for Monument Valley revolves around manipulating the environment in order to let your character proceed to the next level. It's similar to Fez in that it's obviously inspired by Escher paintings, requiring you to manipulate "impossible" architecture.
Pro No need for internet connection with offline gameplay
Monument Valley allows for offline gameplay, meaning that the user does not need an internet connection to play once the game has been downloaded onto his/her device.
Pro Perfect balance of difficulty in puzzles
No puzzle is too difficult or too easy. Never frustrating.
Pro Illustrative soundtrack
The soundtrack really helps illustrate the beautiful surrounding world in which the game is set.
Cons
Con Can be difficult at later levels
Towards the late game Osmos become pretty difficult, which can be frustrating for what is supposed to be a relaxing game.
Con The game is too short
The base game only has ten levels that can be completed within 20 minutes.