Lately I've been playing a free online role-playing game called "Game! The Witty Online RPG". If you like puns you'll like this game. It's completely browser based so you don't need to install anything on your pc. The games author created and maintains the game as a side hobby so he's not in it for money. He's also very open to people contributing to the game. If you feel the game mechanics don't work the way you think they should, or if you come up with new enemy or quest scenarios or feel like submitting some artwork feel free to post in the forums.
One of the enemies you encounter is the Account Ant
The game seems a bit simplistic at first, but the longer you play the more complex you realize the game is. With numerous items to uncover, foods to create, enemies to slay, quests to fulfill, and general zaniness, Game! The Witty Online RPG is a lot of fun. Give it a whirl, I think you'll like it.