If you're up late and fancy killing off an hour or two of your not-so-precious time, you could do worse than giving Hikkikomori Quest a spin. A freeware RPG, it tells the tale of a Hikkikomori who, having had his birthday ruined on 4chan, decides to set out to prove the world wrong by performing brave deeds. Like...leaving the house and buying a hot dog. It's an adorable piss-take, and best of all, features some artwork by Paul Robertson, he of Pirate Baby fame. You can download/get more info at the links below, but please, don't all go at once, you'll break things.

Freeware Game Pick: Hikkikomori Quest [IndieGames]
Hikkikomori Quest RPG [Welcome to the Dream of Future]