In Tower Defense: Orc Army, the orc army is coming to raid your village. To stop them, you must cut them off at the mountain pass. Build a number of different armed towers along the road. Archery towers will shoot arrows at the orcs, while bomb towers shoot bombs. You can also build magic towers, and barracks for your soldiers. Make sure none of the orcs gets past your defenses. Upgrade your towers during battle, using the money you earn for killing orcs. Between the levels, wisely invest the coins you've earned by unlocking new parts of your Tech Tree, making your weapon towers and warriors even stronger.