In Tabletop Gaming O is for…
Off-suit
In trick-taking card games, off-suit means playing a different suit than the one currently in play. In games like Hearts or Bridge, this usually means you can’t win the trick unless you play a trump card.
OGL (Open Game License)
The Open Game License (OGL) is a legal framework that allows creators to use, modify, and distribute certain game content without infringing on intellectual property rights. Established by Wizards of the Coast for Dungeons & Dragons, the OGL has enabled a flourishing community of third-party publishers and homebrew creators to contribute to the gaming ecosystem, fostering innovation and diversity in game design.
Opposed Action
An “Opposed Action” occurs when two characters engage in directly competing tasks, such as arm wrestling or a stealthy character attempting to pickpocket another. Both parties roll dice, and the outcomes are compared to determine the victor. This mechanic introduces dynamic tension and unpredictability, as success hinges on both one’s abilities and the opponent’s performance.
Orthogonal / Orthogonally
A fancy way of saying “up, down, left, or right”—but not diagonal. In games like Azul or Onitama, movement is often limited to orthogonal directions. If a game says you can move “one space,” always check whether it means orthogonally or includes diagonals.
OOC (Out of Character)
“Out of Character” (OOC) denotes moments when players step outside their in-game personas to discuss real-life matters or clarify game mechanics. Maintaining a balance between in-character and out-of-character interactions is essential to preserve immersion while ensuring that players can communicate effectively about the game’s logistics and rules.
Output Randomness
The opposite of input randomness—this type of randomness happens after you’ve made your decision. Think rolling dice in combat after choosing your attack. It adds tension, but too much can make a game feel unpredictable.
Have I missed anything?