When comparing FEZ vs Kerbal Space Program, the Slant community recommends Kerbal Space Program for most people. In the question“What are the best indie games on Steam?” Kerbal Space Program is ranked 8th while FEZ is ranked 13th. The most important reason people chose Kerbal Space Program is:
The physics engine does a reasonably accurate job of replicating the fundamentals behind both orbital dynamics and rocket design, so by going through the tutorials and experimenting, you're actually learning some real rocket science.
Specs
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Pros
Pro Clever 2D rotation game mechanic
The core mechanic of FEZ is the ability to spin the world around in 3D, and then traverse and interact with the resulting terrain in 2D. This allows you to experience navigation puzzles that are rarely found in any other game.
Pro Brilliant puzzles
Fez has some deviously hard puzzles and mysteries that will require gathering clues from around the world to solve them.
Pro Mysterious world with lots of depth
FEZ goes beyond just being a great puzzle platformer. It also has a very clever storyline and game world with a mysterious bygone civilization that fits perfectly with the mysterious puzzles of the game.
Pro Charming graphics and world
The characters are interesting and expressive and the world they inhabit varies between vibrant forests and villages, foreboding caves, rainy cityscapes, and more.
Pro Great atmospheric soundtrack
Soft synth sounds mixed with chiptunes makes for an enjoyable soundtrack that evokes a feeling of nostalgia while creating a fitting atmosphere that complements the graphics.
Pro Teaches orbital dynamics & rocket design fundamentals in an accessible manner
The physics engine does a reasonably accurate job of replicating the fundamentals behind both orbital dynamics and rocket design, so by going through the tutorials and experimenting, you're actually learning some real rocket science.
Pro Tons of stuff to do
Build rockets, space planes, space stations, rovers, landers, probes. Explore planets, moons, capture asteroids, set up a communications network, colonize a planet, mine for resources and much more. It can even simulate our solar system.
Pro Huge modding scene
There's a plethora of mods available that can change every single aspect of the game.
Pro Excellent construction sandbox for building and launching rockets
KSP at its core is a rocket building and launching sandbox. When creating a rocket you can place engines, fuel cells, structural elements, and even parachutes, allowing you to build a rocket in any shape and size. The end result can even look like a giant doughnut, which might be difficult to get it into outer space. Even if you fail, the entirety of the process is really enjoyable.
Pro Motivates you to learn
Kerbal Space Program puts into perspective how amazing the advancement of the human race is. It inspires you to learn our history, how we got here, and what we can do proceed.
Pro In constant development
KSP is a shinning example of early release done right. The currently available game is fun to play, and the developers are constantly adding new major additions.
Cons
Con Minimal direction
The lack of clear direction + the mysteries of the foreign writing alphabet and numeric systems may overwhelm players who got in expecting a simple & cute platformer game about a white dude with a red hat (a traditional Ottoman hat, which is called a "fez").
Con Pen and paper absolutely required for full completion
There is a lot of backtracking and so, you need to keep a pen and paper near you to take notes, because you might need something very important later on. For some people this might be a fun killer.
Con Not metroidvania
Nothing in the form of powerups,. this is a puzzle game - not a metroidvania.
Con Very limited depth
The core gameplay loop of "jump until stuck, then rotate" is boring and repetitive within the first hour. Aside from this perspective-shifting mechanic, the game does not have much to offer.
Con Limited button mapping support on keyboard
FEZ has a couple of preset control schemes to choose from, but the buttons can't have functions assigned individually.
Con Phil Fish made it
Phil Fish has had a long rap sheet of being incredibly arrogant and toxic in his behavior, purchasing this game is an implicit endorsement of this kind of behavior.
Con Guess-and-check instead of intuitive puzzles
Unlike other great puzzle games like Portal or Braid, many of the levels in Fez are unpredictable. You can't just look at the map and predict exactly what to do. You have to guess and check, and not all of the results are intuitive. While guess-and-check puzzles works well for games like The Witness, it's really tedious in a game like Fez.
Con Loads of backtracking
The world is an intertwined maze that rely on specific portals to travel between. Since the entire game revolves around locating cubes -- a minimum of 32 cubes are required to reach the game's ending (64 cubes and "anti-cubes" exist in total). A considerable amount of backtracking is needed to locate the needed cubes; which are intentionally difficult to find and acquire.
Con Slow gameplay
Navigation isn't quick, and each missed jump can make ascending an area feel like a laborious chore.
Con Frequent crashes on PC
PC version of the game has stability issues. Luckily, FEZ autosaves often so no much progress is lost when the game crashes.
Con Some visuals are poorly done
While the rockets, buildings, and even the Kerbals look pretty good, the environments and particle effects are a bit lacking.
Con Steep learning curve
Kerbal Space Program is not really a pick up and play title. It can take hours just go grasp the basics and the game will keep throwing new concepts at you as you progress into space, even stuff like orbital dynamics. Because of this, it can easily take dozens of hours to truly master this game.