Combat flight simulation game

A survey simulation is a classification of simulator that includes a variety (or survey) of aircraft from the period in question. This type of classification applies to many historical combat simulators, and typically includes aircraft from all nations participating in the conflict. Early simulators suffered from flight models and instrument panels that differed little between aircraft. As the technology got better, so did the diversity of aircraft, which forced the virtual pilot to learn the carefully modelled strengths and weaknesses of the various types of aircraft (e.g. the different fighting and flying styles of a Spitfire versus a Messerschmitt 109 in IL-2 Sturmovik or a Mitsubishi Zero versus a US Navy F4F Wildcat in Combat Flight Simulator 2).

Modern jet survey simulators have been developed as well, such as US Navy Fighters (USNF) and Jane's USAF by Jane's/Electronic Arts, typically with simplified and generic modelling of radar, navigation, and weapons. The turn of the century saw advancements in technology that increased the capabilities of these simulators, simplifying and improving their weapon handling and flight models, as well as updated visuals. Titles featuring these improvements include Jane's Combat Simulations, a line of flight simulations originally developed by Electronic Arts and later continued by the company Third Wire, as well as the series Strike Fighters: Project 1 and Wings over Europe.

The "study sim" is a genre of simulation games that focuses on modelling an aircraft's systems as accurately as possible. Advancing computer technology made this possible, with the development of highly detailed models that improved upon the fidelity of avionics, weapons systems, physics, flight models, graphics, etc. and allowed for fully interactive cockpits where virtually every control was mapped and functional. This was important as modern jet combat aircraft and helicopters have a variety of complex electronic and weapon systems that are specific to a particular aircraft.

Early iterations of simulators in this genre include the release of EF2000 by Digital Image Design (DiD) which quickly garnered a dedicated following, including a user group that produced a detailed online manual of weapons and tactics, as well as the popular Falcon 4.0, a detailed simulation of the USAF F-16 Fighting Falcon. Other development of these simulators includes a collaborative and specialized effort between Electronic Arts and Jane's in the 1990s, with titles such as Jane's Longbow, Jane's Longbow 2, Jane's F-15 and Jane's F/A-18.

Helicopter simulations began in 1986 with the title Gunship by MicroProse. Nine years later, in 1995, Digital Integration released Apache Longbow, the most sophisticated helicopter simulation of the time. In 1996 it was exceeded by Jane's AH-64D Longbow, a game created by Origin Systems and released by Electronic Arts as part of the Jane's Combat Simulator series. The sequel, Jane's Longbow 2 (1997), was one of the earliest simulations to take advantage of hardware accelerated graphics, including advanced lighting. 1998 saw the release of Enemy Engaged: Apache vs Havoc by Empire Interactive, which allowed players to choose to fly for either the US or Russia.

The sophistication and intricacy of these simulators continued to grow, and in 2008 the Digital Combat Simulator (DCS) released DCS: Black Shark, the first of a series of simulations that featured a complete and detailed cockpit with all the relevant switches accurately modelled and functional, and mapped over 500 key-commands. DCS also supported a variety of input devices aside from the traditional joystick, throttle, and pedals, featuring built-in support for TrackIR and Virtual Reality with 6 degrees of freedom which, in conjunction with the interactive 3D-cockpit, created a very realistic experience.

Modern jet simulators are usually classified by their historical context or level of details (study versus survey). There have been many modern jet sims that concentrate on existing fighters (several AV-8 Harrier II sims, and others such as Fleet Defender by MicroProse, and F22 lightning 3 and F-22 Raptor by NovaLogic), whereas others concentrate on future fighters (e.g., F-22 Total Air War by Digital Image Design in 1998). While many simulators either classify as a study sim or a survey sim, Lock On: Modern Air Combat is an example of a game that attempts to bridge the study/survey gap with highly detailed models of several US and Russian aircraft.

Before multiplayer games becoming popular, many simulators could only be played by a single player. This continued to be the standard until the late 1990s when most titles included some sort of multi-player/network capability. In single-player combat simulators, every entity other than the players' own aircraft are controlled by the program's "AI" (artificial intelligence), and modern video games create very sophisticated and intelligent AI with independent behaviour for adversaries and allies. Multiplayer games, which usually also contain AI, allow players to oppose one or many human players. After the growth of the internet, many simulators were created that exist only or primarily as internet multiplayer versions (e.g., Air Warrior, the massively multiplayer Fighter Ace, WarBirds, Aces High, World War II Online, Ace Online, War Thunder, Fighter Wing 2 and others).

Many players of both video games and simulators seek games for their replay value. Simulators enhance the replay value by offering a variety of single missions consisting of short, randomly generated missions as well as longer campaigns consisting of several smaller mission or objectives. Most campaigns are "dynamic flowing," which means they change according to the results of each successive mission (e.g. if the player destroys a "target of opportunity" which turns out to be a truck carrying an enemy leader, then the campaign starts to take a different path). Some campaign models have been developed which are fully dynamic, and where successive missions take place in an environment which is persistent (if a building is destroyed in one mission, it remains destroyed in the next and will only be rebuilt in view of limited resources, realistic time and strategic priorities, etc.). A notable pioneer in this area was Andy Hollis, producer of the Jane's Longbow series. Digital Image Design, with their release of F-22 Total Air War in 1998, allowed for a transparency into the larger strategic battlefield by use of multiple screens and a "God's eye view." Many simulators also include "mission builders" which allow the player to create their own missions.

Combat flight simulators are among the most computer and graphics demanding applications at any given time, as they are real-time applications with multiple processes happening at once. This leads many simulation fans to constantly upgrade their hardware, including the most advanced graphics cards. These sims have also given rise to a variety of hardware add-ons such as "HOTAS" (hands on throttle and stick) controllers that allow full control of most functions without touching the keyboard. Voice control and head-tracking view control systems are also available for home flight sim enthusiasts.