Blocks That Matter was practically free as part of the Voxatron Bundle back in October. This means the game really isn't hard to find from other users, and even if you don't want to trade for it, you can find it priced at a fair $4.99 on Steam. That said, is it worth your time? The short answer is yes.
The puzzle mechanics of this game are strong. The game does not baby you, and you will most likely find yourself screwing up and having to reset a level to try it again. The challenge makes this game worth playing, but for those of use with our feet wet with platforming games, Blocks That Matter is not another Super Meat Boy. The platforming gameplay is very dull and absurdly easy. The only challenge is in solving puzzles.
The real fun comes from the quirky story and fun visuals and the unique concept behind the gameplay mechanics. Unfortunately, the game is flawed by bastardized controls and a menu that does not let you exit the game. The only way i could get the game to close was to alt-tab to the Steam client, control-alt-delete and end the process. Then, there is no indication of when data is saved, so you risk losing your progress every time you exit the game. That said, I have not once lost my progress playing this game, and it is not that hard to end an application, anyway. Still, the game could use a convenient quit button.
Overall, I recommend this game to casual gamers only. Hardcore gamers will most likely want to skip this game and get Super Meat Boy instead. For the puzzle elements, I recommend Portal 2, but there are plenty of other options out there. For $5, I think Blocks That Matter is a great option for the family computer, because it has a childhood appeal and lacks blood. I would love to have this game on my 3DS for that matter, but that is impossible.
Another thing to look for when browsing PC games is the system requirements. There are really 4 things you need to worry about: RAM or memory, processor, video card, and finally, the hard drive space. Memory can be upgraded fairly easily, and it shouldn't cost much. We recommend having at least 1GB memory, 2GB if possible. Your processor needs to be fairly modern, and a Pentium 4 probably won't cut it. We recommend a 1.8Ghz Core 2 Duo or better. Your video card should support DirectX 9 (or higher) and have a minimum of 256mb memory attached to it. We recommend 512mb or greater. Hard drive space is subjective, but we recommend having a fairly large amount of space. You could settle for as little as 40gb and be able to play most games, but we recommend having 80gb or more space to make sure you have room for multiple games at once. Most PC games don't run straight from their disc. They usually require an install process, and most modern games require around 8gb of free space to install.
PCs are the ultimate game console, because they can be upgraded, and they will never go out of style. PCs can also play most old game systems through emulators, so if you lose your Playstation, you can just play your games on your PC. You can also play classic arcade titles and have infinite coins!
A lot of people complain about having to use a mouse and keyboard to play PC games. This isn't a requirement, fortunately, and we have what we call gamepads or joypads. Yes, we can use game controllers! We can even use Xbox controllers! That said, it's not as plug-and-play as a game console, and some games simply will not work with your joypad. Fortunately, Steam tells you if games support controllers, and if your favorite game doesn't support them, you can map the controllers to keyboard and mouse controls.
Just be careful when buying PC games. Read reviews carefully. If a game gets a 1/5, don't buy it. If your PC is a cheapie, don't expect modern 3d games to work. Read the system requirements very carefully. If you don't know anything about your system, you can find help in the PC Stuff forum.