FAQ

What is Flycast?
Flycast is a SEGA Dreamcast, NAOMI and AtomisWave emulator, forked from reicast, and made by flyinghead

How can I use Flycast?
There are two main ways where you can get Flycast: Either as a standalone emulator or as a RetroArch core.

You can get the latest standalone Flycast build here; currently the latest builds are at the "net-rollback" branch. You can also get the "Flycast Dojo" version which includes some extra netplay-oriented tweaks and features, both as a standalone here or as part of Fightcade.

Where can I use Flycast?
Flycast builds are avaliable for Windows, Linux, Mac, iOS, Android and Switch. The Flycast Dojo builds are only avaliable for Windows and Linux.

What can I run with Flycast?
Flycast supports the following:


 * SEGA Dreamcast games (.chd, .gdi, .cdi, .cue), including games based on Windows CE
 * SEGA NAOMI games (.zip, .7z, .dat/.lst)
 * SEGA NAOMI GD-ROM games (.zip, .7z, .dat/.lst and .chd)
 * SEGA NAOMI 2 games (.zip, .7z, and .chd) - WORK IN PROGRESS
 * Sammy Atomiswave games (.zip, .7z)

Note that in the case of Dreamcast games, the recommended formats are either GDI or CHD, while for NAOMI games, using dat/lst files is considered obsolete. Flycast does NOT run Hikaru or SEGA System SP games.

Wait, Flycast can run NAOMI 2 games now?
Yes, though as noted above, it is work in progress, meaning that some games in certain areas might have graphical issues and slowdown, and others won't work. Also, currently it is only supported in latest Dev builds for desktops using OpenGL 3.3+, so using an old GPU that doesn't support that OpenGL level, using DX11/Vulkan renderer or using an Intel GPU won't work for these games at the moment (nor does attempting to run them on the mobile versiosn).

Does Flycast support drag-and-drop and command line for launching games?
Yes! Flycast can open games through drag-and-dropping over the .exe file, using an batch file or through the command-line. For example, if you have an Marvel VS. Capcom 2 ROM at the root Flycast folder and you have a flycast.exe file, if you type  on the command-line window, flycast should open with Marvel VS Capcom 2 booting; as long as you have the NAOMI BIOS installed.

In any case, it is recommended to check the Command line parameters page for more information about using them to load games, as well as do things like starting the emulator in fullscreen and/or with certain settings enabled.

How can I start the emulator in full-screen mode?
Just set it in full-screen (by pressing Alt+Enter), and if you close the emulator while fullscreen, the next time it will open in fullscreen.

Can it connect online?
Most if not all games compatible with Dreamcast Live servers are supported by Flycast, and the emulator is automatically configured to use Dreamcast Live servers.

What is Flycast Dojo?
Flycast Dojo is a fork of Flycast, a multi-platform Sega Dreamcast, Naomi and Atomiswave emulator derived from Reicast, with a focus on netplay features and replay. We intend to keep Flycast Dojo updated with the latest downstream changes made to the parent project. It supports both delay and rollback netcode to play Dreamcast, NAOMI and Atomiswave games online. You can check about how to use it on its Github page or its website.