Developed by GNI & Sesi Soft, Metal Assault (often referred to as MA) is a free-to-play 2D shooter game with movement based on WASD keys and weapon aim is mouse-directed. You gain experience through completing missions, quests, and through PvP and PvZ (player vs zombie) battles. However, there is a difference between level EXP and license EXP, which increases your proficiency with different types of weapons.
The game’s back story is based in a modern timeline with semi-futuristic elements. There are 4 playable characters to choose from; each character carries a unique skill set to the gameplay (Carl, well-rounded and balanced; Burton, best suited to front-line assault; Marie; excels at long range combat; and Ai, support). And different game modes: Death Match, Capture the Camp, Zombie infection, Mission mode and cooperation mode.