Serious Sam Easter Egg - Scroll of Developers

When you have to retrieve an object to enter the temple of Mutt, I think it is called, you come to a giant pool with a monolith in the middle. Dive in and swim ahead, and when you come to the little platform where the monolith stands on, look to your right. Under the water, you will see a part of the wall that looks fake. That is because it is. Swim ahead and it will open. Inside you will find a scroll. NETRISCA will analyze it, and it will show a picture of the developer team and a funny little story about the 15th or so sequel to Serious Sam,: "Mental strikes back...again!" and the selling of over 300 million copies.