Actually, how about a list?
1) Civilization 2: easily over 100 times
2) Age of Empires 2 (singleplayer): over 70 random map games finished
3) Delta Force 2 (singleplayer): about 63 times (one mission per time)
4) Civilization 4 (singleplayer): 46 times
5) Call of Duty: Modern Warfare (campaign): 31 times played through
6) 1701 A.D. (or Anno 1701)(singleplayer): 23 times
7) Cossacks: Back to War: 21 times
8) Halo: Combat Evolved (singleplayer): 5 times
9) Fallout 3: 3 times
10) Assassin's Creed: 3 times
1) Civilization 2: easily over 100 times
2) Age of Empires 2 (singleplayer): over 70 random map games finished
3) Delta Force 2 (singleplayer): about 63 times (one mission per time)
4) Civilization 4 (singleplayer): 46 times
5) Call of Duty: Modern Warfare (campaign): 31 times played through
6) 1701 A.D. (or Anno 1701)(singleplayer): 23 times
7) Cossacks: Back to War: 21 times
8) Halo: Combat Evolved (singleplayer): 5 times
9) Fallout 3: 3 times
10) Assassin's Creed: 3 times