{{Bandai}}'s entrant into the handheld console market which never received a release in the United States. In style, it looks like somebody crossed an iMac of the era (Bondi Blue!) with a GameBoy. It came in a multitude of colors, and eventually got an upgrade with the [=WonderSwan=] Color and another upgrade with the [=SwanCrystal=].

The system was the brainchild of GunpeiYokoi, father of the Game Boy, who was unhappy with being KickedUpstairs at the [[Creator/{{Nintendo}} Big N]] after the failure of VirtualBoy (which was the company's fault for making him release it early) and accordingly left for their main competitor. Unfortunately, after Yokoi's untimely death in a car crash, the project kinda lost momentum...at a point when Nintendo was releasing the GameBoyAdvance, which eclipsed the [=WonderSwan=] family quite quickly and in the end Yokoi's last creation [[NoExportForYou never reached western shores]].

The system gave Nintendo the first thing like a challenge in Japan's portable market indeed, it's believed that the success of the [=WonderSwan=] (Color) gave the Big N just enough of a nudge to release the GameBoyAdvance so quickly on the heels of the Game Boy Color.
!!Games for the [=WonderSwan=] and [=WonderSwan Color=]:
* ''VideoGame/ArcTheLad''
* ''VideoGame/{{Beatmania}}''
* ''VideoGame/ChoAniki: Otoko no Tamafuda''
* ''[[VideoGame/ChocobosDungeon Chocobo no Fushigina Dungeon]]''
* ''VideoGame/ClockTower: The First Fear''
* ''VideoGame/DenshaDeGo''
* [[/index]]''Franchise/{{Digimon}}''
** The DigimonWonderSwanSeries[[index]]
*** ''VideoGame/DigimonAdventureAnodeCathodeTamer''
*** ''VideoGame/DigimonAdventure02TagTamers''
*** ''VideoGame/{{Digimon Adventure 02 D-1 Tamers}}''
*** ''VideoGame/DigimonTamersBraveTamer''
** ''VideoGame/DigimonBattleSpirit''
* ''Franchise/FinalFantasy''
** ''VideoGame/FinalFantasyI''
** ''VideoGame/FinalFantasyII''
** ''VideoGame/FinalFantasyIV''
* ''[[VideoGame/FireProWrestling Fire Pro Wrestling for [=WonderSwan=]]]''
* ''VideoGame/FrontMission''
* ''VideoGame/GoldenAxe''
* ''VideoGame/GuiltyGear Petit''
* ''VideoGame/JudgementSilversword''
** ''Cardinal Sins'', a freeware spinoff of JSS
* ''[[VideoGame/{{Klonoa}} Klonoa: Moonlight Museum]]''
* ''[[VideoGame/{{Langrisser}} Langrisser Millennium: The Last Century]]''
* ''[[VideoGame/MagicalDrop Magical Drop for WonderSwan]]''
* ''[[VideoGame/GhostsNGoblins Makaimura for WonderSwan]]''
* ''[[VideoGame/{{Medabots}} Medarot: Perfect Edition]]''
* ''[[VideoGame/MegaManClassic Rockman & Forte: Challenger from the Future]]''
* ''[[VideoGame/MegaManBattleNetwork Rockman.EXE]] WS''
** ''Rockman.EXE N1 Battle''
* ''VideoGame/MrDriller''
* ''VideoGame/NobunagasAmbition''
* ''[[VideoGame/SuperGemFighter Pocket Fighter]]''
* ''VideoGame/PrincessMaker: Yumemiru Yousei''
* ''VideoGame/PuyoPuyo Tsu''
* ''VideoGame/RivieraThePromisedLand''
* ''VideoGame/SaGa''
** ''VideoGame/MakaiToshiSaGa''
** ''VideoGame/RomancingSaGa''
* ''VideoGame/SaintSeiyaOugonDensetsu Hen: Perfect Edition''
* ''VideoGame/SDGundamGGeneration''
* ''VideoGame/SpaceInvaders''
* ''VideoGame/SuperGemFighter Mini Mix''
* ''VideoGame/SuperRobotWarsCompact''
** ''VideoGame/SuperRobotWarsCompact2''
** ''VideoGame/SuperRobotWarsCompact3''
* ''VideoGame/{{Tetris}}''
* ''Uzumaki''
* ''VideoGame/{{Wizardry}}''