When comparing SpaceChem vs The Talos Principle, the Slant community recommends The Talos Principle for most people. In the question“What are the best puzzle games on PC?” The Talos Principle is ranked 2nd while SpaceChem is ranked 17th. The most important reason people chose The Talos Principle is:
The puzzles in the game are great, but they're tied together with a thought provoking story line filled with mystery and intrigue. A story about a robot with human consciousness who is being guided by a disembodied voice, are they to be trusted? As the story progresses the player is drip fed clues which can lead them closer to the truth.
Specs
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Pros
Pro Could help with real life programming skills
In particular, abstraction and concurrent programming skills could be gleaned from the game as it uses broad techniques often used by computer programmers.
Pro Easy to learn, hard to master puzzle
Spacechem's mechanics are pretty simple to learn and only takes minutes to understand how the game works. Of course mastering the gameplay is a whole different matter.
Pro Allows for short or long play sessions
The gameplay allows for a player to come in and solve a single puzzle in a short amount of time or to sit and tinker with a puzzle for hours trying to devise the perfect solution and contraption. It all comes down to what one want to put into the game but the free form of the puzzle solving is what makes it great for anyones playstyle be it short or long.
Pro Light on the system
The system requirements are quite low at only requiring a 2Ghz processor, 1G of ram and 300MB of hard drive space. Basically this game should work on just about any computer from the last 10-15 years.
Pro Endless gameplay through user created solutions
An individual players choices of components, arrangements or factories used will result in completely different experiences and problems/puzzles when compared to another users experience. A truly individualized experience that expands the games replayability.
Pro Great storyline
The puzzles in the game are great, but they're tied together with a thought provoking story line filled with mystery and intrigue. A story about a robot with human consciousness who is being guided by a disembodied voice, are they to be trusted? As the story progresses the player is drip fed clues which can lead them closer to the truth.
Pro Lots of side content
Many Easter eggs and more difficult puzzles as well as an ending in many parts of the game, as well as hidden lore.
Pro Difficulty ramp-up
Starts out easy enough, but gets to some truly difficult puzzles by the end. If you get stuck on a puzzle you can skip it and come back to it later.
Pro Rewards exploration and out-of-the-box thinking
It's hard to explain this without spoiling anything, but there are lots of "aha!" moments you will encounter on the areas if you get invested into the story, making the game deeper.
Pro Great original soundtrack
The soundtrack is very pleasant to listen to and fits perfectly with all the areas and themes present in the game. It varies from calm music, for those heavenly areas where you are solving puzzles, to more misterious and epic pieces for moments when things get... real. It's good to have some nice music playing while your brain is melting from solving the puzzles, or just appreciating the scenery.
Cons
Con Annoying action-y 'boss' stages
At the end of each 'world', there is a boss stage in which you have to perform a unique task. This wouldn't be too bad, but in these levels, you can use blocks that you can activate in real time to change the way your program runs. This often means lots of manual work and a lot of padding to hit the buttons at the right time, which is unnecessary for a puzzle game (and, given that you cannot rewind, also stressful if your program is very tight). I would imagine that the best scores for these levels also overly abuse this feature to make solutions that would be almost impossible without use of macros, for instance.
Con Late game is difficult
In later levels some players may reach a point where the game has become too difficult or frustrating, which may discourage any more play time with the game.
Con Working with the level editor is difficult (no documentation)
There is not much documentation for the level editor in the game, as the creators primarily use it for themselves. There are of course many hotkeys you could accidentally press as well.
Con Obtuse puzzles, especially with optional content
Mediocre game design all around. Many puzzles are ordered badly or redundant and could have been combined or removed to smoothen the experience, as well as occasionally not exercising the bounds of certain elements (like ranged pickup). The game's optional content is even more worrisome as it often leads you to play hidden object games to look in hundreds of corners instead of using more difficult puzzles. One particularly egregious example is when you have to interpret a message in a very specific way after using a decryption algorithm you may not know about into another questionable input system.