Microsoft’s Xbox brand has been facing an up Mount. Fuji battle since its launch. And while the 360 has faired better than the original Xbox, some recent numbers shown by Famitsu (translated by NeoGAF) shows the Xbox might be farther down the mountain than originally thought.

Famitsu tracks the top 50 best selling Xbox 360 games with the top game not even selling a quarter million units. As Destructoid points out, when you add the total sales of all 50 games, only 1.8 million units have sold - as much November sales of Mario Galaxy and Guitar Hero III in the U.S.

The surprise in these numbers is how even games that attracted huge headlines for first week sales dropped of. Ace Combat 6 helped the 360 console outsell the PS3 in Japan for the first time, selling 77,000 units in its first week. A month later, Ace Combat 6 has only sold 6,000 more copies.

Even games that Japan loves are having trouble expanding the 360’s user base. This will make the 360 Devil May Cry 4 sales numbers versus the PS3’s all the more interesting. Check out the full top 50 after the jump.

1. Blue Dragon - 203,740
2. Dead or Alive 4 - 108,618
3. Ace Combat 6 - 83,045
4. Halo 3 - 82,987
5. Ridge Racer 6 - 73,501
6. The Elder Scrolls IV: Oblivion - 72,274
7. Trusty Bell - 70,244
8. Gears of War - 68,270
9. Dead Rising - 68,078
10. Lost Planet - 61,555
11. DEAD OR ALIVE Xtreme 2 60544
12. Lost Odyssey - 60,376
13. Idolm@ster - 48,695
14. Dynasty Warriors 6 - 44,292
15. Assassin’s Creed - 41,436
16. Ninety-nine Nights - 38,019
17. Forza Motorsports - 2 31,255
18. Rumble Roses XX - 29,187
19. Crackdown - 28,588
20. Culdcept Saga - 27,960
21. Earth Defense Force 3 - 27,087
22. Perfect Dark Zero - 26,085
23. Test Drive Unlimited - 25,788
24. PGR3 - 25,058
25. Beautiful Katamari - 24,186
26. World Soccer Winning Eleven X - 21,904
27. Armored Core 4 - 21,096
28. Dead Rising (Xbox 360 Platinum Collection) - 20,325 (total sales 88,313)
29. [eM] eNCHANT arM - 20,233
30. Saint’s Row - 18,593
31. Rainbow Six Vegas - 18,592
32. Oneechanbara vorteX - 18,443
33. Need For Speed Most Wanted - 17,973
34. Bulletwitch - 16,241
35. Ghost Recon Advanced Warfighter 2 - 15,994
36. PlayOnline/Final Fantasy XI All-in-One Pack 2006 - 15,754
37. World Soccer Winning Eleven 2008 - 15,090
38. Idolm@ster (Xbox 360 Platinum Collection) - 14,864 (total sales 63,559)
39. Earth Defense Force 3 (Xbox 360 Platinum Collection) - 14,707 (total sales 41,794)
40. Final Fantasy XI Wings of the Goddess Expansion - 14,412
41. Call of Duty 3 - 14,194
42. Virtua Fighter 5 Live Arena - 13,169
43. Chrome Hounds - 13,110
44. Tenchu Z - 12,974
45. Project Sylpheed - 12,283
46. PGR 4 - 12,237
47. Viva Pinata - 12,184
48. Godfather - 11,670
49. Dynasty Warriors 5 Special - 10,957
50. Bulletwitch (Xbox360 Platinum Collection) - 10,857 (total sales 27,098)