League of Legends is a team based game in witch you chose your champion and play. But watch out because you always need to fully fill your team need and not only your to get kills and others. So for example if you'r team are only nukers, dps, mages, asasins, be sure that you will chose a tank or you will lose. A very good team build is this one http://leaguecraft.com/strategies/team/724-pro-team-guide-suggestion-gt-gt-1600elo-variable-setup-by-indilol-updated.xhtml source:( www.leaguecraft.com )
www.leagueoflegends.com if you wanna play.