The Great Pyramid is the final level of Serious Sam: The First Encounter.
Sam has finally reached the Great Pyramid. He must clear all the way to the Pyramid, get inside, and get beamed up by the Sirian Spaceship. But, there is an unexpected surprise waiting for him, Ugh-Zan III. After killing him, Sam gets beamed up on the Spaceship, gives a phone call to Mental, taunting him that he's coming to kill him but it turn's out that Mental is not at home right now so he leaves him a voice message, and leaves for Sirius...or so he thinks.
- (HD-only)In the arena, from the middle tunnel on the left, after the Major Bio-mech bursts through it, enter it to find a +50 health. You don't need to do this the moment they burst through the tunnels, but it's suggested you do it after all the fights in the arena are complete.
- (HD-only)Opposite of #1, there's a +1 armor shard. This will cause 8 Minors to spawn behind you, 2 groups of 4 at a time.
- (HD-only)when approaching the Pyramid, look to your right, far in the desert. You'll see an Aztec head. There's a +100 health near it, but collecting it will spawn a high number of Kamikazes.
- There is a clock above the pyramid's entrance counting down in binary.