What are some alternatives?
When comparing Hexen II and Doom, you can also consider the following products
Borderlands - Borderlands is a science fiction first-person shooter with RPG elements made with cel-shaded...
Quake - Quake is a series of first-person shooter video games released by id Software.
DotA 2 - Dota 2 is a Free-to-play, Action-Adventure, Multiplayer Online Battle Arena, Single and Multiplayer video game created and published by Valve Corporation.
Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
BioShock - Get the latest information on BioShock, BioShock 2, and BioShock Infinite