Battle SWAT vs Mercenary: Zombie Survival throws you into gritty browser firefights where humans and the undead crash the party. Pick SWAT or Mercenary, kit your loadout, and clear tight maps packed with chokepoints and vertical angles. Web Dev https://www.crazygamesx.com/. Swap between PvP skirmishes and wave-based zombie survival, earn cash, unlock weapons, and hold the line with smart positioning and burst control. Fast rounds, headshot-clean TTK, and clutch revives keep the chaos sweaty and addictive.