The HUD requires ZDoom 2.7.0+ or GZDoom 1.8.0+ to run. It will only work out-of-the-box with projects that do not alter the player's arsenal. Modification of the HUD is necessary if you want custom weapons and ammo to work with it. If you want the hud to work for old versions of Brutal Doom and Samsara, there is a separate download for it called BlueShadow/DEHUD. Now has compatibility for Brutal Doom and Accessories to Murder.