A fun package you have no reason to miss.
Most games come with a price tag, and a pretty hefty one at that coming up around $50-60. Recently however there has been a sort of new day for free download-able games witch used to be only for tetris clones. Now with games like D&D online going up for free and this game league of legends being free, well it looks like if you can save that cash for something else.
Now to the actual game. You probably know that it is a DOTA style game, and if you watched the quick look then you an get a fairly good idea of what the game is like. Its very competitive and intense. Its hard to play in long stretches but 30-60 min sittings are what this game is made for. Matchmaking works fine and there is a basic leveling system where your "summoner" gets access to new spells and what not.
It can be fun to try out new champions but you'll most likely stay with the same 6-7 champions you know best. In this way it seems discouraging to try out new champions because you'll get killed a lot by someone using a champion they know well.
Problems aside the game is a bunch of fun in short doses. If you have a PC then by all means download the game and begin playing. And if you find yourself dissatisfied then you know the worst that happened was that you spent a couple of hours playing a game... and thats never a bad thing.