What is a .FM3 file?
A .FM3 file is a special type of file used with a program called FCEUX. FCEUX is a computer program that lets people play old video games from the Nintendo Entertainment System (NES) and Family Computer Disk System on their computers. These old video games are not easily available anymore, so FCEUX helps people enjoy them again.
The .FM3 file is connected to something called the TAS Editor, which is a part of FCEUX. TAS stands for "Tool-Assisted Speedrun." A speedrun is when someone tries to finish a video game as fast as possible. With the help of tools like the TAS Editor, players can make these speedruns even faster by carefully choosing when to press buttons in the game. This can help them avoid enemies or jump over obstacles more efficiently.
In simple terms, an .FM3 file keeps a record of all the buttons a player plans to press during their game. It's like a detailed plan for playing a game super quickly. This file includes not just the button presses, but also extra information that helps with planning the speedrun, like bookmarks of important moments and a history of selections made during the planning.
To open an .FM3 file, you need to use the FCEUX program. This program understands the .FM3 file and can use it to replay the speedrun in the game, showing exactly what the player planned.
Before the .FM3 file was introduced in version 2.2.0 of FCEUX in November 2012, there was another file type called .FM2. The .FM2 file did something similar by recording button presses, but the .FM3 file can do this and more, thanks to the TAS Editor. This makes .FM3 files more useful for people who are serious about creating the fastest speedruns possible because it gives them more control and options to fine-tune their gameplay.
In summary, an .FM3 file is a detailed plan for playing a video game very fast, used with the FCEUX program to enjoy and create speedruns of old Nintendo games.
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