Oscuro’s Oblivion Overhaul, also commonly called OOO, changes the ways in which the core gameplay elements of TES IV: Oblivion relate to each other. The aim of these changes is to create a more immersive, rewarding, believable and enriching experience as you adventure in the world of Tamriel.

We could divide the structures responsible for gameplay into several areas. The lines separating them are somewhat arbitrary, and we could be more specific and nuanced, but first it is important to define these areas in general terms. OOO considers them in the following blocks:

A) Game-Play Meta-Rules:

1. Immersion
2. Risk
3. Reward

B) Game-Play Mechanics:

1. Player Character (PC) Abilities & Non Player Character (NPC) Abilities
2. Quests
3. Economy

C) Game-Play Resources:

1. Environment
2. Inhabitants
3. Objects

Each of these areas has sub-classes, and each subclass can appear as the sum of lower rank classes. For example, the PC Abilities include the Statistics System, the Skill System, the Combat System, the Magic System and Faction System. Likewise, Environment is built by smaller resources, like sounds, music, architecture, flora, weather, etc.

OOO does not change every single variable responsible for gameplay, but it does affect many of the ones I listed above. I have carefully measured these changes against every other modification to the gameplay structures in order to enhance the ultimate goal of gameplay: to absorb you into an exciting experience that entices you to overcome the challenges posed by the “game-world” through rewarding your skill, ingenuity and exploration.