Changes

'''[[wikipedia:Game engine recreation|Game engine recreations]]''' Sometimes a full system emulator is overkill. This is especially true when a developer only wants to get one game (sometimes called '''game or a number of games that use the same engine re-implementations''') are working. In that case, reimplementing that game engines designed to recreate alone would save more time than implementing the workings platform it runs on. These kinds of another. They often reimplement games in ways that projects are common when abandonware has large communities; when the original developer did not intend; for examplehas disbanded and can no longer support or update it, for a platform other than which publishers marketed an effort is then made to get it for. Recreations aren't just limited to game engines either; as an example, [https:running natively on newer versions of-- and//webamp.org/ Webamp] is a JavaScript application that reimplements Winampor entirely different-- operating systems and platforms.

These recreations are common when abandonware has large communities; when * When the original developer only has disbanded a binary to work with (and can no longer support or update not the [[source code]]), they recreate the engine rather than port it, an effort is then made to get it running natively on newer versions of-- and/or entirely different-- operating systems and platforms. Recreations are almost always open-source which also allows new programmers to fix bugs that could have been difficult to track down during hence the term '''[[wikipedia:Game engine recreation|gameengine recreations]]'''s development (or alternatively the bugs may be emulated to allow mods to continue to use them'''game engine re-implementations'''). With How the [[source code]] unavailable, programmers developers go about this process depends on their philosophy; they may opt to decompile the original executable and have their own program rely on the original until all of its functions have been remade, at which point the original binary is no longer needed. Alternatively, they can be remade based on a clean room design, in which the project implements the abstract features without having to disassemble the original, going by how components are expected to be used rather than how the program game uses them.* In rare cases, games are released as open-source by the publishers themselves, allowing developers to perform a '''source port''' of the code. This skips the step of figuring out how the game works. The most common example that's often used is id Software's release of Doom in 1997. It led to [[wikipedia:List of Doom source ports|so many ports being released]] that the community began to joke about what devices haven't gotten it running yet.

Some projects are implemented in ways that the original developer did not intend; for example, for a platform other than which publishers marketed it for. And they're not just limited to game engines either; [https://webamp.org/ Webamp] is a JavaScript application that reimplements Winamp in the web browser. These projects are almost always open-source which also allows new programmers to fix bugs that could have been difficult to track down during development (alternatively, the bugs may be emulated to allow mods to continue to safely exploit them). When most of the effort is on programming, the project will usually require the original game's assets (such as files in the installation directory or ROMs) until those are ever get remade. When a This lets the developers claim they aren't infringing the game engine recreation is unofficially made from 's copyrights since the player must obtain the original to use it; if the game's publicly available source codeis still being sold, it's called a source portthis could allow the publisher to even earn revenue from the project.  For a complete list of game engine recreationsthese projects, see [https://osgameclones.com/ Open Source Game Clones].

|[https://easyrpg.org/player/downloads/ 0.56.30]

|[https://github.com/Interrupt/systemshock/releases 0.67.07]

|[http://nxengine.sourceforge.net 1.0.0.6] <br/>[https://github.com/nxengine/nxengine-evo/releases 2.6.34]

|[http://cyxdown.free.fr/reminiscence/ 0.4.45]

|[https://github.com/zaps166/NFSIISE/releases 1.2.4Git]

|[https://rvgl.re-volt.io 1819.0731a0430a]

|[https://www.dfworkshop.net/projects/daggerfall-unity/live-builds/ PreAlpha 0.57]

|[https://openmw.org/downloads/ 0.4445.0]

|[https://github.com/afritz1/OpenTESArena/releases 0.89.0]

|Windows , Linux, macOS

|Windows , Linux, macOS|[https://github.com/OpenSAGE/OpenSAGE/releases 0.23.0]

|Windows , Linux, macOS

|Windows , Linux, macOS

|[https://github.com/SWY1985/CivOne 0.1.0pre-alphaGit]

|[https://github.com/CorsixTH/CorsixTH/releases 0.6263 Beta 1]

|[https://github.com/OpenRCT2/OpenLoco/releases 1819.0203]

|[https://github.com/OpenRCT2/OpenRCT2/releases 0.2.12]

|[https://github.com/OpenTTD/OpenTTD/releases 1.89.01]