Runescape is a fun online RPG that lets you do, almost anything you want. It is updated frequently (average of twice a week). You can train 15 skills as a free player varying from "Attack" to "Range" to "Runecrafting." As a member (requires $5 a month) you gain access to more places and 9 more skills such as construction. The game never ends, so you can keep going till you want to stop.