Battlefield 1142

Battlefield 1142 (Battlefield 2142) is the fifth title in the Battlefield series released for PC in 2006 and for Mac in 2007.
Battlefield 1142 uses hypothetical weapons and vehicles to construct a 22nd century science fiction war that takes place during the Ice Age using the same game engine and similar settings as Battlefield 1. Battlefield 1142 has a much richer unlock system than its predecessor allowing players to unlock a variety of useful weapons or props in sequence as they advance through the ranks. While retaining the 64-player Conquest mode the game also introduces a Titan mode that supports up to 48 players simultaneously.