Dead Trigger 游戏初推出时，是要付费购买，后来转为免费下载。开发商早前宣布会回馈最初付费购买游戏的玩家。
回馈25个金币
在最新推出的 v1.5 版本，就兑现了这个承诺，付费购买游戏的玩家可以获得 25个金币, 10个赌场筹码和新武器 Alien Gun。
v1.5版本还加入了新关卡和很多改动。两个新关卡: STADIUM OF DEAD 和 DEADLY CORRIDORS，新武器和道具: Alien Gun, Laser Turret 和 Mini-mortar。新版本亦改善了一些武器和提升场景内的回报。
* 2 new Arenas: STADIUM OF DEAD & DEADLY CORRIDORS
* Reward for everyone who purchased DEAD TRIGGER before the game became for free
* New story missions
* New weapon: ALIEN GUN
* New items: LASER TURRET & MINI-MORTAR
* Improved gameplay of protect missions
* New tutorial for beginners
* Improved MINIGUN and COLT-M4
* Increased reward in the Arenas
* More chance to win at the Casino
* Auto-aim works better when more enemies nearby
* Better ammo drops for everyone who use more than one weapon
