There's a new surprise hit on Steam in the form of TBH: Task Bar Hero. Well, maybe it's not such a surprise, since it's effectively doubled as a free money generator, allowing thousands upon thousands of bots and players to idle for items that they can resell on the Steam marketplace. The developers at Tesseract Studio have consequently been hitting player numbers that most indies can only dream of, but they've had to spend much of their time since launch putting out the fires that their sudden popularity has created.
TBH: Task Bar Hero is a "tiny idle RPG" that plays out on your taskbar. You build a party of heroes that go out and adventure on their own, fighting monsters on your desktop as you pretend to work. Along the way, loot drops that you can use to make your characters more powerful – or you can list those items on the Steam market, selling them for credit you can spend on Valve's store.