When talking about Squad, we also have to mention Project Reality. Project Reality is a mod (modification) for Battlefield 2. Commonly this mod is called "PR:BF2" or just "PR". Development of Project Reality started in 2004 and Project Reality has been very popular ever since. Many of the original modders of Project Reality have become developers of Squad. Although Squad is the spiritual successor to Project Reality and many gameplay features from Project Reality will be implemented in Squad, Squad is not Project Reality 2 and a game of its own.
Like Squad, Project Reality is a combined arms, tactical, first-person, multiplayer-shooter. Originally it required a copy of Battlefield 2 to play. Since Project Reality version 1.3 it no longer requires the original Battlefield 2. Now anybody can enjoy Project Reality for free. Try it yourself. Make no mistake, although Project Reality is based on a 10 year old game engine and the graphics are clearly dated, the gameplay is phenomenal. Development of Project Reality continues today and enjoys a loyal player base.