Pre-production -

Description

Idea and concept phase of the development

Porting -

Description

Converting a game to run on a different platform than it was originally made for.

PTR / Public Test Realm or region -

Description

Beta testing service open to a large number of player to test new features. Separate part of the game/ specific test servers

Positive test -

Description

Testing with valid input data / normal behavior.

PCG -

Description

Procedural content generation. Content like levels or game assets are made algorithmically, making the precise outcome unpredictable for or adaptive to the player.