What's a good Android game for intense first-person shooter action with online multiplayer?

Gun Strike Online is a solid choice if you're looking for an action-packed first-person shooter experience on your Android device. It stands out with its focus on online multiplayer, allowing you to team up with friends or challenge players from around the world in real-time battles. The game features a diverse arsenal of weapons, from pistols and shotguns to assault rifles and sniper rifles, letting you customize your loadout to suit your playstyle. You can also unlock and upgrade different characters, each with unique abilities. With various maps and game modes, including team deathmatch, capture the flag, and zombie survival, Gun Strike Online provides plenty of replayability and opportunities for intense firefights. The game also includes a ranking system, so you can track your progress and compete against other players to climb the leaderboards.