Trine 2 is a puzzle platformer with slight hints of RPG elements and a nice array of combat situations.
I bought the game for $3.74 during the Steam Summer Sale, and I must say that it is well worth that price. It is a beautiful game world. Music is also pretty good. The only big problem with it is the extremely short story. The ending is very abrupt and disappointing, but the game offers many achievements that make it worth replaying once or twice.
The story is a direct sequel to the original Trine, but you do not need to have previous knowledge of that game to understand Trine 2. The story is fairly easy to follow. You play as a knight, a rogue, and a mage. Those three characters enter what is known as the Trine. The Trine is an ancient artifact from a long lost civilization that seems to have its own agenda. That plot point is very really explored in either of the games, but in Trine 2, the heroes don't actively pursue the Trine; the Trine comes to them. What the Trine does is it sends anyone who touches it to another place in the world, anywhere the Trine thinks they are needed.
Basically, the Trine teleports the heroes to a far away land to battle an evil witch and her entire forest of goblins. You never actually fight the witch, but you fight all of her minions, and the boss fights can be very interesting.
The gameplay revolves around solving puzzles and platforming. There is some combat, and it is fun, but the focus is on getting from point A to point B in one piece. You can have fun fighting things, though. Multiplayer adds some extra fun to the puzzle-solving elements, but it also makes combat way too easy. You can have up to 3 players per game, but I found that the game is actually less frustrating with only two players.
There are a lot of secrets to be found in the levels, and the achievements reflect this. There are chests with collectible items in them scattered across all the levels. You also have to collect orbs to level up the characters and gain their extra skills. Finally, there are some interesting alternative routes through some of the obstacles if you look hard enough.
Ultimately, the game is very short and will get boring to most people in the course of six hours, but at only $3.74, it's worth buying, anyway.
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.