Imposter vs Invincible Hero 3D is an iPhone game developed by Tuan Nguyen Anh. This free game falls under the category of Games and offers a historical perspective on urban combat. The game focuses on the US Army's experience in the Sadr City suburb of Baghdad in 2008.

In Imposter vs Invincible Hero 3D, players will engage in over 65 unique missions that simulate close urban combat scenarios. The game allows players to equip and upgrade powerful weapons such as assault rifles, heavy machine guns, snipers, submachine guns, rocket launchers, and grenade launchers. Additionally, players can assemble their elite squad from seven soldier heroes and utilize troop, tank, and helicopter vehicles.

The gameplay mechanics of Imposter vs Invincible Hero 3D include the ability to move left, right, and crouch to avoid incoming rockets, grenades, and bullets. The game also offers easy ways to obtain free cash, gold, and items, as well as a Facebook share feature. Players can also opt-in to receive weekly push notifications to remind them of the battlefield, although this feature can be turned off if desired.