Battlefield Play4Free

Battlefield Play4Free featured a class system, which was similar to the class systems of previous Battlefield games. The player could choose between Assault, Medic, Engineer, and Recon.[6] The Assault class was armed with an assault rifle and an "Ammo Box," which could be used to resupply the player and teammates with more ammunition. Medics had a light machine gun and were able to heal themselves and other players with a "Medic Box" as well as being able to revive other players with a defibrillator. Engineer class soldiers were equipped with an RPG-7, a submachine gun, and a repair tool that could be used to fix teammates' vehicles. Lastly, the Recon class utilized a sniper rifle, motion sensor, and M18 Claymore mines. The four classes also had the ability to wield a shotgun and a tracer dart gun, which was not class-specific. This class system has been used in Battlefield: Bad Company 2.[5]

Easy Studios, the developer of Battlefield Play4Free, performs updates to the game commonly. The first major update took place on 29 January 2011, when Easy Studios launched Oman.[7] Then, the developers released Sharqi Peninsula on 4 April 2011, the same day that the game went to open beta.[8] On 9 June 2011, Basra, the fourth map, was released. Later, Dragon Valley was released on 10 August 2011. Besides new maps, Easy Studios has added various game elements such as motion blur due to the new, modified Refractor game engine.

On 25 October 2011, "Tier 3" training was released to include an array of new skill options for all four classes. On 1 December 2011, weapon customization[9] was added to Battlefield Play4Free, thus allowing players to specifically customize their weapons with attachments such as holographic sights, different barrels, assorted stocks, and different types of magazines. Nineteen days later, on 20 December 2011, Easy Studios released the sixth map, Dalian, which was remade from Battlefield 2. Also, in the same update, Easy Studios replaced all "Legacy" weapons with reclassified weapons, which are denoted as "+3." On 23 October 2012, Easy Studios Released "Rush" game mode. This mode places players in one of two roles: either an attack or defense. The game plays out across multiple stages where destroyable MCOM stations are the focal point. There are two MCOMs at each stage, labeled A and B, both of which must be destroyed in order for the attackers to continue forward. The game ends when either all of the MCOMs are destroyed or the attackers are eliminated by means of depletion of their tickets. This game mode was first used in Battlefield: Bad Company. The expanded Sharqi Peninsula map was the first map to get the rush treatment. Karkand rush and Dalian rush are also now online.

In October 2013, the devs at Easy Studios began an effort to balance the vast number of weapons currently in the game, several of which were felt to be unbalanced or "overpowered" when compared to other weapons within each respective class as well as on the whole. As of November 2013, the re-balancing has been mostly completed and implemented; however, was still met with continued discord.