Orc Defense is a tower defense game with no final level.

Orcs walk down the map toward your keep, up to 450 of them in a single wave, and you hold them with four turret types placed on the eight pads of the current map: gatling, cannon, flame and tesla.

The cash the dead orcs drop pays for damage, fire rate, range and crit while the wave is still running.

A boss arrives every ten waves, the map is swapped every fifty, and after wave 200 the counter restarts one tier harder with enemies at four times the health.

When the keep falls the run ends and the skill points you earned stay with you: they buy 29 permanent upgrades in the Forge, and the 26 cards drawn with diamonds carry over too.

At wave 60 the Sanctuary opens. It holds five totems, Fortune, Force, Mud, Rampart and Hunter, which unlock one by one as your best wave climbs from 60 to 200. You pick the one to feed, every orc you kill goes into it, and each level it gains is a permanent bonus for your runs: more skill points and cash, more damage, slower orcs, a tougher keep, harder hits on bosses.

From wave 40 there is also a leaderboard that ranks players by their best wave. Accounts the server flags for cheating are kept off it.
