This is a game of adventure, exploration and programming. It creates a world in which almost everything is programmable, and let's you read and edit their code by use of a "modifier". Full of conspiracy, an underground organization( or collective ) that tries to reveal the truth and a corporation that tries to control everything. It introduces its own programming language, "Sprak", which basically means "language". IMHO, it's great( although it could be better ).
Here's the link to their website: