WonderSwan emulators

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Bandai WonderSwan/Color
Top: The WonderSwan.
Middle: The WonderSwan Color.
Bottom: The SwanCrystal (Blue Violet)
Developer Bandai
Type Handheld game console
Generation Fifth generation
Release date 1999 (WonderSwan)
2000 (WonderSwan Color)
2002 (Swan Crystal)
Discontinued 2003

The WonderSwan, WonderSwan Color and SwanCrystal are the fifth-generation handheld game consoles produced by Bandai in 1999, 2000 and 2002, respectively. It is the brainchild of Game Boy/Color creator, Gunpei Yokoi. There were three versions eventually released: A black-and-white version, a color version, and a Crystal version with an improved screen.


Name Operating System(s) Latest Version Open-Source Libretro Core WS WSC Active Recommended
Mednafen Multi-platform 1.23.0 UNSTABLE
higan Multi-platform v106
BizHawk Windows 2.3.2
WSCamp Windows 0.21 ~
MAME Multi-platform 0.216b
Cygne Windows 2.1a
Oswan Windows 1.7.3
WonderScott Windows, Web (Java) 0.54b
Xe Windows, Linux 2.16.2
eSwan PSP 0.09


A WonderSwan and WS Color emulator written by Toshi. This was the first WonderSwan emulator to feature sound as well as gamepad support, and it has a very high compatibility rate and excellent speed. It was the most accurate WonderSwan emulator at the time in the early 2000's, beating out Cygne and Oswan.
The first WonderSwan emulator created on the Windows platform, written by DOX and released under the GNU General Public License. It had undergone massive improvements over its original DOS beta form in the early 2000's, including better timing and fixes to the SRAM. Cygne has a high compatibility rate, but lacks in speed and does not offer any sound support. Cygne supports both the original WonderSwan and the WonderSwan Color. However, it was abandoned in 2002.
Oswan is a WonderSwan/WS Color emulator based on the Cygne source code and authored by David Raingeard. Improvements upon the original Cygne source include the additional of sound support and many speed improvements. Oswan also features the ability to apply several video filters as well as color schemes to add color to WonderSwan Classic titles. It has been abandoned as two variants of it were released in 2007 and 2010.
The second WonderSwan/WSC emulator, this WonderSwan emulator written in JavaScript was authored by Julien Frelat (Gollum) and released by the same team that made Boycott Advance. An online web format of WonderScott was also available at its official website, but is probably permanently inaccessible. It was somehow abandoned after its last version, v0.54b, was uploaded near the end of 2001 with poor compatibility.

Features & pages on recommended/available WonderSwan/WS Color emulators:

  • BANDAI WONDERSWAN 101: A BEGINNER’S GUIDE (July 6th, 2007 by racketboy; updated June 19th, 2018. Old feature covering early WonderSwan emulation. Oswan and WSCamp were the recommended emulators according to the article. Both are too old by now and not recommended.)
  • Wikibooks.org (PSP/Emulation List. 5 old emulators and ports for the PSP.)
  • VTEmulation.net (Old list of 3 old, early 2000's recommended emulators. Site no longer maintained.)
  • Old-Computers.com (List of 5 old, early 2000's emulators. For reference only.)
  • Zophar's Domain List of downloads for 5 old, early 2000's emulators.)