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Presenting gameplay from the perspective of the player character's eyes, typically rendering a 3D environment. This view allows for immersive exploration and interaction, often used in shooter, adventure, and simulation games.

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/

Offering a calm and soothing experience, often with minimal pressure or stress. Relaxing games typically feature peaceful environments, gentle soundtracks, and low-stakes gameplay designed to help players unwind and de-stress.

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