Evil Genius (EG1) is a single-player real-time strategy and simulation video game developed by Elixir Studios and published by Vivendi Universal Games. It was originally released for Windows PCs in North America on September 28, 2004, and in Europe on October 1, 2004. It is available for purchase on the Steam store.

The game has three difficulty levels: easy, medium, and hard. Various values like character stats and object cost are tweaked from their default values one way to make things easier on easy mode (e.g. costs are multiplied by 0.8 and minion stats are multiplied by 1.2) and the other way to make things harder on hard mode (e.g. costs are multiplied by 1.2 and minion stats are multiplied by 0.8); medium mode is the default. Unless otherwise noted, values given on this wiki are the default medium-mode values.

In 2021, Rebellion Developments released a sequel, Evil Genius 2: World Domination (EG2).

World Domination Starter Kit

The World Domination Starter Kit is the only official expansion for EG1. It includes a new henchman, Colonel Blackheart, as well as a new item, the Reclining Chair.