The books sat in dust, and in the darkness... circled by their undead guardians... undisturbed... until now.

Castle is an action-adventure Flash-animated stick-figure series, created by Oscar Johansson. Set in a near-apocalyptic future, the series follows a group of soldiers and their efforts to infiltrate and subsequently escape from a group of cryptic Castles in an alternate dimension, attempting to recover a mysterious power from them in the hopes of solving Earth's resource crisis.