If you want a true picture of the 360 library then you could compare all the games that sold more then 1.5 million copies.
Only 11 out of 35 are FPS/TPS
Sandbox games, WRGP's, Sports Games, Action Games, they make out the rest
1 | Halo 3 | Microsoft | 566,611 | 7.08 | 8.68m | 17th Nov 08 | ||
2 | Call of Duty 4: Modern Warfare | Activision | 80,606 | 6.99 | 6.78m | 03rd Nov 08 | ||
3 | Grand Theft Auto IV | Rockstar Games | 80,884 | 5.76 | 6.47m | 08th Oct 08 | ||
4 | Gears of War | Microsoft | 42,192 | 7.64 | 5.65m | 07th Nov 08 | ||
5 | Assassin's Creed | Ubisoft | 29,537 | 7.36 | 4.26m | 24th Sep 08 | ||
6 | Forza Motorsport 2 | Microsoft | 26,485 | 7.53 | 4.24m | 14th Nov 07 | ||
7 | Guitar Hero III: Legends of Rock | RedOctane | 14,615 | 7.34 | 3.74m | 03rd Sep 08 | ||
8 | Gears of War 2 | Microsoft | 57,038 | 6.63 | 3.44m | 18th Jul 08 | ||
9 | Call of Duty: World at War | Activision | 3,244 | 0.00 | 3.16m | 03rd Sep 08 | ||
10 | Elder Scrolls IV: Oblivion | 2K Games | 13,264 | 7.70 | 2.61m | 29th Nov 08 | ||
11 | Marvel: Ultimate Alliance | Activision | 9,355 | 6.56 | 2.54m | 26th Oct 08 | ||
12 | Madden NFL 08 | Electronic Arts | 8,056 | 7.27 | 2.39m | 27th Aug 07 | ||
13 | Guitar Hero II | RedOctane | 5,896 | 7.18 | 2.35m | 31st Oct 08 | ||
14 | Call of Duty 2 | Activision | 4,243 | 6.18 | 2.28m | 11th Apr 08 | ||
15 | Tom Clancy's Ghost Recon Advanced Warfighter | Ubisoft | 4,054 | 7.31 | 2.21m | 03rd Nov 08 | ||
16 | Tom Clancy's Rainbow Six: Vegas | Ubisoft | 5,972 | 7.36 | 2.20m | 31st Oct 08 | ||
17 | Mass Effect | Microsoft | 40,813 | 7.54 | 2.20m | 16th Feb 08 | ||
18 | Call of Duty 3 | Activision | 4,830 | 5.65 | 2.19m | 12th Apr 08 | ||
19 | Bioshock | 2K Games | 33,747 | 7.69 | 2.15m | 15th Nov 08 | ||
20 | Rock Band | MTV Games | 12,176 | 7.28 | 2.14m | 26th Oct 08 | ||
21 | Fable II | Microsoft | 9,260 | 7.00 | 2.03m | 07th Aug 08 | ||
22 | Saints Row | THQ | 4,964 | 7.31 | 1.99m | 09th Aug 07 | ||
23 | Tom Clancy's Rainbow Six: Vegas 2 | Ubisoft | 9,091 | 7.42 | 1.96m | 05th Jun 08 | ||
24 | Madden NFL 07 | Electronic Arts | 2,981 | 5.50 | 1.88m | 29th Apr 08 | ||
25 | Fight Night Round 3 | Electronic Arts | 3,247 | 5.82 | 1.81m | 06th Jun 07 | ||
26 | Dead Rising | Capcom | 8,478 | 7.36 | 1.80m | 11th Apr 08 | ||
27 | Lego Indiana Jones: The Original Adventures | LucasArts | 2,358 | 1.00 | 1.75m | 11th May 08 | ||
28 | Viva Pinata | Microsoft | 8,620 | 7.09 | 1.74m | 11th Apr 08 | ||
29 | Need for Speed: ProStreet | Electronic Arts | 5,565 | 7.00 | 1.74m | 05th Apr 08 | ||
30 | Lost Planet: Extreme Condition | Capcom | 9,080 | 7.03 | 1.72m | 27th Oct 08 | ||
31 | Madden NFL 09 | Electronic Arts | 4,789 | 5.50 | 1.70m | 27th Aug 08 | ||
32 | Army of Two | Electronic Arts | 8,957 | 6.32 | 1.55m | 05th Apr 08 | ||
33 | Need for Speed: Most Wanted | Electronic Arts | 1,878 | 7.23 | 1.52m | 05th Sep 08 | ||
34 | Crackdown | Microsoft | 5,627 | 7.35 | 1.51m | 13th Jun 08 | ||
35 | FIFA 08 | Electronic Arts | 4,283 | 7.00 | 1.50m | 16th Oct 07 |
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