Summary: Spacechem won't be for everyone. It's a thinking man's game with plenty of head scratching. I love that the creator has tried something very different from the standard games of today. The game makes you feel like a mad scientist and the epic soundtrack adds tension as you test your formula for the first time. This game would be perfect on the iPad and be warned this game isn't netbook Spacechem won't be for everyone.
Summary: I reviewed this game at a 5 earlier, but I've changed it to a ten. Why? Because I figured it out. I finally get this game, and wow, what a thrill! Spacechem is the most entertaining puzzle game that I've ever played. It's intense, tremendously fun, and (most of all) challenging. When you figure a puzzle out in it, you just feel good. I can proudly say that not only do I get this game, but I reviewed this game at a 5 earlier, but I've changed it to a ten. Why?
Summary: I've been playing this before it was available on Steam. Still play it today. it's a fantastic puzzler with great mechanics and an addictive aspect of one-uping yourself and other engineers. For the guy who "looked at pictures" and decided it sucked... well, that's an obvious situation. Worth it for full price, let alone included in a Humble Bundle.
Summary: The best puzzle game I have ever played. The puzzles are very open ended, have many solutions, and many different obstacles and tools at your disposal all oriented around chemistry theme of making and breaking chemical bonds and molecules.
Summary: The level of difficulty on this game is sick! It starts out fairly easy, but it gets hard fast. Seriously, your brain will start to hurt with infinite ways to solve each puzzle as you ponder how to design a more efficient solution. One-click YouTube upload for easy solution sharing. Such a simple concept, yet so much innovation in this absolute must-have indie gem--so addicting.
Summary: An amazing Sandbox Puzzle Game. It is challenging without restricting your creativity. Any solution that works is valid; you are not held to contrived expectations. However, the problems can be difficult on their own, given the tools you have available. Steep learning curve, non-trivial puzzles, and a wonderful sense of accomplishment when you make it work. The storyline is An amazing Sandbox Puzzle Game. It is challenging without restricting your creativity.
Summary: I tire of games that are all about killing, or mind-numbing match-3 games. SpaceChem is fairly original, but most importantly, it's different from 99 out of 100 games coming out today. It starts out easy to get you used to how it works, but doesn't take long to start challenging you. As others have said, what seems impossible at first ("Surely it can't do that *and* that?" - oh yes it I tire of games that are all about killing, or mind-numbing match-3 games.
Summary: SpaceChem has been one of the most fulfilling puzzle games I have ever played. On more than one occasion I've been completely stumped by a solution, stumble off to bed, and dreamed of reactor errors only to sit down at my computer to find the solution in fifteen minutes the next morning. I've been challenged by many puzzle games in the past, but from their very design if I was stuck there SpaceChem has been one of the most fulfilling puzzle games I have ever played.
Summary: This has a linear learning curve, satisfying level design, and even a few bonus rounds and boss battles to excite while remaining strictly casual. The music and sound effects aren't particularly painful, the graphics are functional and smooth. There's also a plot, although interesting and grisly; it doesn't impact gameplay in any meaningful way.
Summary: SpaceChem is a puzzle game that looks deceptively easy. Just moving atoms around and assembling molecules, right? But it get's pretty challenging pretty quickly as the molecules get bigger and the number of bonds increase. It is a hard game to put down and I've found myself pondering certain puzzles long after I closed the game, figuring out solutions in my head and then going to the pc to SpaceChem is a puzzle game that looks deceptively easy.