Spacechem

Starts easy like tutorial and then.... very hard puzzle game this one. If you are Masochist brain solve puzzle, this is your game and you will love it

I absolutely love the game! I haven't finished it yet - I might take a few weeks in between puzzles. But I have definitely been up late (2 or 3am) some nights finishing a puzzle or two. I love the mechanics, you have only two waldos to work with, a limited amount of space in the reactor, and still have to come up with an efficient solution.

Zactronics have quite simply made something so elegant, beautiful and well designed that no-one should miss out on this. Even if puzzle games aren't your thing, this game is so unique, so challenging, and is packed with so much content, it has to be experienced. On top of probably the most clever and rewarding game mechanics in the genre. You have an amazing soundtrack. Even the story, is extremely well written and thought out. Indie gaming is saving this industry for me, and this is quite easily one of the leading examples (along with Braid, Limbo, Machinarium and Journey)

This game has had me coming back and replaying levels over and over. Not only does it challenge you to build a process for transforming molecules, it pits you against the entire playerbase by displaying your scores for three stats (very relevant in-game... space consuming to explain them here though) against graphs of the entire community's performance. That, plus the ability to totally re-think your designs and eke out a little bit more speed or use a couple less instructions, makes for delightfully addicting gameplay! Out of all the games I've picked up in the Humble Indie Bundles, this is the one that I consistently keep firing back up. :D

I've put a lot of hours into this game, a LOT of them, and I still haven't come close to finishing. Best value I've gotten out for my gaming dollar in a long time. The basic idea is that you're running 'factories' to assemble atoms. You're setting up a visual program using "waldoes", one red, and one blue. Each factory is divided into a workspace of something like 12x12 space, and you design paths for your waldoes to travel over to accomplish your goal. Early on, you have to do very simple things, like simply take atoms from the input to the output, which teaches you how to route waldoes, how to pick up and drop atoms, and how to pass them out of the reactor when you're done with them. Later missions get gradually more and more complex, as you start to go to multi-factory layouts. The difficulty ramp in this game is very steep. My experience was being handed, over and over, puzzles that looked flatly impossible to solve. But thinking your way through these things is just amazingly fun. I don't know what it is about Spacechem, but this game absolutely puts me in the zone, and keeps me there for hours at a time. I'm not usually a big puzzle-game fanatic, but something about this game grabbed me HARD. I've lost count of the number of times I've gotten completely stuck and temporarily given up, only to have a new idea, hours later, and then come back and solve a previously-impossible puzzle in short order. There are multiple skill levels to this game, and after you've gotten through four or five sets of scenarios, you'll go back to your early ones, and be amazed at how much more efficient you've learned to be. There's a demo available from the main site, and I suggest VERY STRONGLY that you check it out. I'm not normally a big puzzle fanatic, but Spacechecm is different, and awesome. Imagine me reaching out of your monitor, grabbing you by the collar, and imploring you to go play the demo. I don't know if you'll like the game, but I'm utterly, deadly certain that you should try the free demo.