Vanilla is a first-person action role-playing game that takes place in the modern-day world. It was developed by the Belgian developer M.G. Bats and published by Microsoft.

In Vanilla, the player controls a character known as the Player. They can explore and interact with the environment in a manner that is both optional and free to do so. The environment is rendered using a special effect that gives the appearance of a bright, glowing screen. The effect is applied using the vanilla game engine, and its intensity is adjustable using a slider. The adjustment can be applied to the whole game, or to a specific area of the screen.

In the game, the characters are distinguished from the environment by the use of a specific effect that gives them a brighter appearance and an effect that makes them more visible.