Omok is a very simple mini-game. It is played between two players. One must own a game, while the challenger merely has to enter. Each player has a piece that resembles various monsters in the game depending on what Omok set is used that can be placed on the board. The goal of the game is to get 5 in a row. There are a number of sets that are possible to create, using Omok Pieces dropped from Monsters in Victoria Island and Ludibrium. All that is needed to create a game is 1 of each type and an Omok Table that is also dropped by few monsters(Stumps and Toy Trojans). To do this, take the collected items to Casey in Henesys Game Park or Chico in Ludibrium.
A complete set of Omok is extremely easy to get now. It's more difficult finding an Omok board than getting the pieces. Previously, Omok pieces were somewhat uncommon drops and 99 of each type, along with the board, were needed to create a set.