GoalUnited

Goal United is an online MMO which puts you in the role of a soccer club manager. You have to upgrade your stadium to host games, sign new players and trade away those who don’t fit in, sign deals with sponsors (you can even negotiate with them), and keep your players in top form to ensure you emerge victorious versus other football managers. The game is league-based -- each league consists of 10 teams. On the lower leagues, the three best teams get promoted to a higher league automatically. However, as your team gets better, you’ll have to battle neighboring league teams in the playoffs in order to reach a higher league. The game is beginner-friendly as there’s an awesome tutorial for newbies. GoalUnited’s details will keep you busy for weeks, as you can tweak every possible setting, player placement, etc. The game can, however, get somewhat slow for those who don’t purchase additional features.