The Hollow sits above a dungeon ten floors deep. At the bottom waits an Ancient Dragon. Killing it is how you win — but nobody manages it on the first call, and that is the point.

Fighting. There is no attack key. Walk straight into a monster and you strike it. Walk into it again and you strike it again.

Going deeper. Each floor has a > staircase somewhere in the dark. Stand on it to descend. The < takes you back up, and from floor 1 it returns you to town.

Gold and gear. Pick up everything. Gold buys weapons and armour from the smith and the armory, and better gear is the whole difference between floor 2 and floor 5.

Dying. You will. Death costs you the gold in your pocket and nothing else — your level, your gear and your progress all survive. Gold left at the Bank of Byte is untouchable, so bank it before you descend.

Coming back. Your character is saved in this browser. Log off, come back tomorrow, and pick up where you stopped — you can re-enter at any floor you have already reached.