Dead Trigger 遊戲初推出時，是要付費購買，後來轉為免費下載。開發商早前宣佈會回饋最初付費購買遊戲的玩家。
回饋25個金幣
在最新推出的 v1.5 版本，就兌現了這個承諾，付費購買遊戲的玩家可以獲得 25個金幣, 10個賭場籌碼和新武器 Alien Gun。
v1.5版本還加入了新關卡和很多改動。兩個新關卡: 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場景內的回報。
* 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
