Serious Sam HD
From SDA Knowledge Base
This page focuses on the differences between the HD and non-HD games.
Contents
General changes
Slope jumping
You gain extra altitude when jumping up slopes in non-HD. You also get a small speed boost when jumping down slopes in both versions, although it is larger in non-HD.
Slope jumping
It is easier to stand on top of enemies in HD.
Out of bounds
In non-HD you can get out of some of the levels and noclip to the exit.
Damage boosts
The First Encounter
Sand Canyon
In non-HD you can go out of bounds in the starting area and noclip to the exit.
Tomb of Ramses III
Valley of the Kings
The Aludran Reptiloid Highlander has more health in HD (20 rockets to 14 in non-HD). In non-HD you can go out of bounds in the gold ankh area and noclip to the exit.