The Bf 109 G-2, also known as the "Gustav", was the most produced variant of the German single-engine Bf 109 G series fighter. It was designed by Willy Messerschmitt's team at the end of 1941. The Bf 109 fighter family was produced not only in Third Reich factories, but also in Axis countries, including Hungary. Hungarian factories produced more than 500 Bf 109s under license, most of which were G series. Half of these were supplied to the Hungarian Air Force and the rest were transferred to the Third Reich. In Hungary, German fighters replaced outdated CR.42s in air units and participated in combat operations with varying degrees of success until the end of the war.

The Hungarian Bf 109 G-2 was introduced in Update 1.89 "Imperial Navy" as a part of the Italian aviation research tree. The Bf 109 G-2 is similar to its predecessor, the Bf 109 F-4, with balanced flight characteristics and good armament. However, thanks to its more powerful engine, the "Gustav" has better climb performance, allowing it to easily reach much higher altitudes and giving it an additional advantage over its main rivals. Additionally, the aircraft received extra armor to protect the pilot and the rear fuel tank, making the fighter fairly survivable. Compared to the Bf 109 F-4, the plane lost some low-altitude performance and generally became heavier.