itch.io

Games that defy the traditional approach to game design and offer unique, interesting and often strange experiences.

Games where you discover new locations by traveling around in the game's environment

Utilizing content created by algorithms rather than human made content. Often utilizes a "seed," a relatively small string that is used to control the randomization algorithm that generates the entire world.

PROCJAM is the Procedural Generation Jam, an annual event about making things that make things.

http://www.procjam.com/

Where walking around a virtual world is a primary element of the gameplay.