Half-Life 2 Mod — Resistance & Liberation Open Beta
This multiplayer source engine mod, presently in open beta, allows players to relive the invasion of Normandy in full 32-player online glory. The goal of Resistance and Liberation is to realistically portray the events and actions taken by the 82nd Airborne during their stay in Normandy.
Realism is a strong focus — the modders are attempting to recreate the environment, weapons, challenges, and feeling of WWII combat while still providing a game that feels fun and comfortable for at least a significant subset of gamers.
How strong of a focus on realism is there? No crosshair, no HUD, and no death messages.
Check out this (rather lengthy) feature overview: