Lock On: Modern Air Combat or LOMAC, known in Russia as Lock On, is a modern combat flight simulation developed by Eagle Dynamics and published by Ubisoft in Europe and 1C Company in Russia; it is considered as a survey simulator by its creators. It contains 8 flyable aircraft and over 40 non-playable/AI-controlled planes. The game mainly revolves around air-to-air combat and air-to-ground combat with some optional, unique roles such as pinpoint/anti-radiation strikes, anti-ship strikes or aerobatics. The game realistically models all aspects of take-off and landing, AWACS (also known as AEW&C), carrier-based landings (for the Su-33), and aerial refueling.
Over 180,000 buildings, 50 million trees, 21 cities, 1,700 towns, 500 bridges, 18 airfields, and 8 naval bases are present in a virtual world modelled after Black Sea region. The 8 flyable aircraft are the MiG-29A, MiG-29S, Su-27, Su-33, Su-25, MiG-29G (a German MiG-29 variant with a native board-computer), F-15C, and the A-10A; only the Su-25 and A-10 are dedicated close air support aircraft, the rest are air superiority or multi-role fighters with limited or no air-to-ground capabilities. Due to the small number of aircraft the player can only fly as a pilot from either the United States, Ukraine, the Russian Federation, Georgia, Israel or Germany.
A flexible mission editor is included to allow users to make a wide variety of missions or even full-length campaigns, equal to the quality of those presented with the game. Many fan-created mission packs and campaigns have also been released.
There are 4 Eagle Dynamics constructed campaigns in the original game, one for each main aircraft represented; the A-10, F-15, SU-25 and SU-27. Each one boasting around 6-7 missions. Additional campaigns were later added in patches for the SU-33 and MiG-29.