Sega's Seaman 2 has entered the Japanese software chart at number one, based on sales for the week ending October 21, selling 33,000 copies.
There were three other new entries in the top ten, including Beautiful Katamari for the Xbox 360 in seventh, which split the two Pokemon Mysterious Dungeon titles.
The Nintendo DS dominated the entire top 30, with the other new entries - DS Literature Collection at number two and Racehorse Owner Life Game at number ten both on that platform.
The full top ten software chart is as follows:
1. Seaman 2 (PS2)
2. DS Literature Collection (DS)
3. Dragon Ball Z: Sparking! Meteor (PS2)
4. DS Nishimura Kyotarou Suspense Detective Series: Deadly Intent (DS)
5. Gundam Battle Chronicle (PSP)
6. PokÃ®mon Mysterious Dungeon: Time Expedition Party (DS)
7. Beautiful Katamari (X360)
8. PokÃ®mon Mysterious Dungeon: Shadow Expedition Party (DS)
9. Flash Focus: Vision Training in Minutes a Day (DS)
10. Racehorse Owner Life Game: Winner's Circle (DS)