The v1.13 "patch" is actually a massive community-driven overhaul that converts the game into a highly customizable tactical sandbox. Key features include:
Enemies now flank, use suppression, and climb onto roofs to snipe your squad. jagged-alliance-2-gold-v1-13
A completely reworked chance-to-hit (CtH) system that factors in weather, stance, and suppressive fire. The v1