Nintendo has said that Wii Fit (Wii Fitness, when it gets released over here) has hit the one million sales mark in Japan in its first month on sale - to be exact from December 1st until January 6th, according to the Associated Press.

That's one in every 127.5 men, women in children in Japan who now owns a copy. It also means that nearly 1 in 5 Japanese Wii owners has a copy^†. SPOnG's man in Japan got his mitts on the game - which has been on sale since December 1st - and see what he thinks of it here.

Meanwhile, Media Create has just got around to releasing the Japanese software charts for December 24th to December 31st, with Super Robot Wars OG Gaiden getting the last Japanese Number 1 of 2007. You can see the Japanese Top 30 in full below.

Japan ended 2007 on a high note for games, with the industry over there having a record year.

1 Super Robot Wars OG Gaiden (PS2) 197,000
2 Wii Fit (Wii) 135,000 / 884,000
3 Mario Party DS (DS) 131,000 / 1,288,000
4 Final Fantasy IV (DS) 126,000 / 414,000
5 Star Ocean: First Departure (PSP) 105,000
6 Wii Sports (Wii) 82,000 / 2,507,000
7 Suzumiya Haruhi no Yakusoku (PSP) 81,000
8 Professor Layton and The Devil's Box (DS) 80,000 / 607,000
9 Dragon Quest IV (DS) 78,000 / 1,041,000
10 Super Mario Galaxy (Wii) 56,000 / 720,000
11 Wii Play (Wii)
12 Mario & Sonic at the Olympic Games (Wii)
13 Mario Party 8 (Wii)
14 Mario Kart DS (DS)
15 Call of Duty 4: Modern Warfare (PS3)
16 Naruto Shippuuden: Narutimate Accel 2 (PS2)
17 Taiko Drum Master DS (DS)
18 Monster Hunter Portable 2nd (PSP)
19 New Super Mario Bros. (DS)
20 Powerful Pro Kun Pocket 10 (DS)
21 WarioWare Smooth Moves (Wii)
22 Call of Duty 4: Modern Warfare (Xbox 360)
23 World Soccer Winning Eleven 2008 (PS2)
24 Tales of Innocence (DS)
25 Professor Layton and the Curious Village (DS)
26 Gran Turismo 5 Prologue (PS3)
27 Animal Crossing Wild World (DS)
28 Nep League DS (DS)
29 Pokémon Mysterious Dungeon: Time Expedition Party (DS)
30 Resident Evil: The Umbrella Chronicles (Wii)

^† Based on 4,616,160 Wiis sold by December 31st in Japan and a spot of guesswork for the last week.
^{Source: Associated Press}