Square Enix's
Dragon Quest Monsters: Joker 2 saw a drop in weekly sales in Japan, but was able to lead charts for the third week in a row, followed once again by Konami and Hideo Kojima's
Metal Gear Solid: Peace Walker.
For the week ended May 16, tracking firm Media Create said the DS role-playing game
Dragon Quest Monsters: Joker 2 sold 126,000 units. That's down from the game's debut week, which saw 624,000 in unit sales, and its second week, which saw 253,000 units.
Coming in second was Kojima's
Metal Gear Solid: Peace Walker for PSP, selling 63,000 units during the week, versus 434,000 when the game debuted and 141,000 units last week.
To date,
Dragon Quest Monsters: Joker 2 has sold just over 1 million units in Japan, while
Metal Gear Solid: Peace Walker has sold 638,000 units. Both games launched on April 28 in the country.
New Super Mario Bros. Wii, released in Japan in December last year, continued to hang near the top of the charts with 19,000 units sold during the week. The game has sold over 3.8 million units in Japan.
Games that fell off of the top 10 list include the DS game
Pokemon Ranger: Tracks of Light and
Wii Sports Resort, which were ousted from the top 10 by new entries
Haku Ouki Yugiroku from Idea Factory and
2010 FIFA World Cup South Africa from EA.
Below are Media Create's weekly Japanese charts for the week ended May 16, 2010:
| LW | TW | Title | Publisher | Platform | Weekly Sales |
| 1 | 1 | Dragon Quest Monsters Joker 2 | Square Enix | DS | 126,000 |
| 2 | 2 | Metal Gear Solid Peace Walker | Konami | PSP | 63,000 |
| 3 | 3 | New Super Mario Bros. Wii | Nintendo | DS | 19,000 |
| 4 | 4 | Friend Collection | Nintendo | DS | 16,000 |
| NEW | 5 | Haku Ouki Yugiroku | Idea Factory | PSP | 16,000 |
| 5 | 6 | Mario Kart Wii | Nintendo | Wii | 16,000 |
| 9 | 7 | Nier Replicant | Square Enix | PS3 | 13,000 |
| 6 | 8 | Wii Fit Plus | Nintendo | Wii | 13,000 |
| 7 | 9 | Super Street Fighter IV | Capcom | PS3 | 12,000 |
| NEW | 10 | 2010 FIFA World Cup South Africa | EA | PS3 | 10,000 |
