Cursor left and right to run, space to jump! Murdered, your heart ripped from your chest - search the underworld, find your heart and you may return to life! Vigor is rewarded - the longer you run, the faster you run and the further you jump! Elements within the world will respond to your exertion, moving in sympathy with the quickening of your hidden heart - so taking a moment to find your calm may make parts of your journey easier.