WonderSwan hardware sales

Long queue caused by WonderSwan Color
launch.

It was reported by KOTO (the company who designed the hardware) that WonderSwan total sales volume reached more than 3.5 million and the software cassettes for WonderSwan series sold more than 10 million.

Total hardware sales (shipment) was reported by Bandai to be 3.32 million units in the CESA White Paper Report 2007 (CESA is the japanese computer entertainment association).

In Japan WonderSwan (original and color models, but excluding Swan Crystal ) sold through customers around 3 million (source: Famitsu/Enterbrain).
Swan Crystal is the most rare revision since it sold just a few hundred thousand units.

Excluding the dominant Nintendo handhelds, as of August 2015 WonderSwan is the third best-selling gaming handheld ever in Japan behind Sony's PlayStation Portable and Vita (source: Famitsu/Enterbrain, except Game Gear which is shipment data):

Sony PlayStation Portable: 19.62 million
Sony PlayStation Vita: 3.98 million
Bandai WonderSwan: more than 3.20 million
Sega Game Gear: 1.78 million
SNK Neo Geo Pocket: 0.55 million

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WonderSwan software sales in Japan

Shipment sales data reported by Squaresoft for the fiscal year ending March 2002:

Final Fantasy II: 330000
Romancing Sa・Ga: 120000
Final Fantasy IV: 90000
Makai Toushi Sa・Ga: 50000
Blue Wing Blitz: 20000
Hanjuku Hero: Aa, Sekaiyo Hanjukunare...!: 20000

WonderSwan software sell-through sales tracked by Famitsu/Enterbrain, courtesy of GameDataMuseum:

	Pos.		Name	Publisher	Total	First Week	Release Date	Score
	１		Final Fantasy	Square	376,367	147,173	00/12/09	３０
	２		Final Fantasy II	Square	241,601	146,765	01/05/03	３０
	３		Digimon Adventure: Anode/Cathode Tamer	Bandai	212,466	36,150	99/12/16,00/01/20	－
	４		Chocobo's Mysterious Dungeon for WonderSwan	Bandai	175,670	58,905	99/03/04	－
	５		Super Robot Wars Compact	Banpresto	143,729	63,002	99/04/28	－
	６		GUNPEY	Bandai	143,291	36,148	99/03/04	３３
	７		Super Robot Wars Compact 2 Part 1	Banpresto	114,164	58,510	00/03/30	－
	８		Digimon Ver.Wonder Swan	Bandai	108,292	15,851	99/03/25	－
	９		SD Gundam Emotional Jam	Bandai	79,995	27,123	99/05/27	－
	10		Digimon	Bandai	67,731	27,765	00/05/25	－
	11		Beatmania for Wonder Swan	Konami	67,589	21,921	99/04/28	－
	12		From TVanimation One Piece Grand Battle Swan Colosseum	Bandai	67,367	22,675	02/07/12	２６
	13		Final Fantasy IV	Square	64,226	19,928	02/03/28	２７
	14		SD Gunfam G Generation Gather Beat	Bandai	62,122	24,054	00/07/13	－
	15		Digimon Tamers 02 Tag Tamers	Bandai	61,815	23,257	00/08/03	－
	16		Hunter x Hunter	Bandai	58,610	27,344	00/06/01	－
	17		TERRORS	Bandai	58,590	－	99/08/05	－
	18		From TVanimation One Piece Mezase Kaizokuou!	Bandai	54,263	19,799	00/07/19	－
	19		Super Robot Wars Compact 2 Part 2	Banpresto	53,515	25,358	00/09/14	－
	20		Romancing SaGa	Square	49,169	37,031	01/12/20	２８
	21		Mobile Suit Gundam Vol.1-SIDE7-	Bandai	48,938	21,473	01/02/01	２６
	22		Super Robot Wars Compact 2 Part 3	Banpresto	47,359	25,444	01/01/18	２６
	23		Inuyasha: Kagome no Yume Nikki	Bandai	45,564	16,349	01/11/02	２６
	24		Digimon Tamers Battle Spirit	Bandai	41,935	14,025	01/10/06	２６
	25		Detective Conan	Bandai	40,702	－	99/08/05	－
	26		Densha de GO!	Taito	36,763	12,215	99/03/04	－
	27		SD Gundam G GENERATION Gather Beat 2	Bandai	35,926	16,127	01/06/14	－
	28		Senkaiden	Bandai	35,040	24,480	00/02/24	－
	29		From TVanimation One Piece Treasure Wars	Bandai	31,458	－	02/01/03	２６
	30		Inuyasha: Fuuun Emaki	Bandai	31,298	－	02/07/27	－
	31		Hunter X Hunter: Sorezore no Ketsui	Bandai	30,340	16,323	01/04/26	２３
	32		Wild Card	Square	29,520	15,340	01/03/29	２３
	33		From TVanimation One Piece: Legend of the Rainbow Island	Bandai	25,624	10,900	01/09/13	２６
	34		Arc the Lad: Kijin Fukkatsu	SCE	20,401	11,458	02/07/04	２９
	35		MobileSuit GUNDAM MSVS	Bandai	17,155	14,296	99/08/26	－
	36		Makai Toushi SaGa	Square	14,129	14,129	02/03/20	２７
	37		Klonoa Moonlight Museum	Bandai	13,766	13,766	99/05/20	－
	38		Hanjuku Hero: Aa, Sekaiyo Hanjukunare...!	Square	13,643	13,643	02/02/14	３０
	39		Neon Genesis Evangelion Shito Ikusei	Bandai	13,093	13,093	99/07/22	－
	40		Digimon Tamers Medley	Bandai	12,884	8,970	01/07/12	２１
	41		New Japan Pro Wrestling: Toukon Retsuden	Tomy	12,129	4,063	99/03/04	－
	42		Wonder Stadium	Bandai	12,116	12,116	99/03/11	－
	43		Card Captor Sakura: : Sakura to Fushigi na Clow Card	Bandai	11,290	11,290	99/12/02	－
	44		Super Robot Wars Compact 3	Banpresto	10,688	10,688	03/07/17	－
	45		Guilty Gear Petit	Sammy	10,400	10,400	01/01/25	２４
	46		SD Gundam G Generation: Mono-Eye Gundams	Bandai	10,361	10,361	02/09/26	３１
	47		Harobots	Sunrise Int.	10,166	10,166	99/10/07	－
	48		Tokyo Majin Gakuen	Asmik Ace	9,573	9,573	00/10/12	－
	49		Alchemist Marie & Elie: Futari no Atelier	E3 Staff	9,257	5,106	01/10/25	３０
	50		Detective Conan: Nishi no Meitantei Saidai no Kiki!?	Bandai	9,299	9,299	00/07/27	－
	51		Last Stand	Bandai	9,057	9,057	99/05/27	－
	52		Hataraku Chocobo	Square	8,930	8,930	00/09/21	－
	53		Huner X Hunter	Bandai	8,838	8,838	01/08/23	２２
	54		Makaimura for Wonder Swan	Bandai	8,183	8,183	99/07/22	－
	55		Front Mission	Square	7,989	7,989	02/07/12	３０
	56		Detective Conan: Twilight of Princess	Bandai	7,408	7,408	01/04/05	２８
	57		SD Gundam Operation U.C.	Bandai	7,367	7,367	02/02/16	２４
	58		With You: Mitsumete Itai	Shall Luck Plus	7,331	7,331	01/01/25	２４
	59		Riviera: The promised land	Bandai	6,420	6,420	02/07/12	３１
	60		Inuyasha: Kagome no Yume Nikki	Bandai	6,317	6,317	02/11/16	２３
	61		Digimon Card Game Ver WonderSwan	Bandai	6,103	6,103	02/03/16	２７
	62		Langrisser Millenium WS	Bandai	6,026	6,026	00/03/09	－
	63		Digimon　Project D	Bandai	5,351	5,351	02/08/03	２５
	64		Mobile Suit Gundam SEED	Bandai	5,082	5,082	03/03/15	－
	65		Namco Super Wars	Bandai	4,979	4,979	02/10/31	２９
	66		Memories off Festa	KID	4,895	4,895	01/03/08	２４
	67		SD Gundam Eiyuuden: Kishi Densetsu	Bandai	4,207	4,207	01/03/15	２０
	68		Wizardry	Bandai	4,134	4,134	01/03/01	２５
	69		Blue Wing Blitz	Square	4,090	4,090	01/07/05	２４テン
	70		Rockman Exe WS	Bandai	1,024	1,024	03/02/08	－