| 2,466 | 33 Biggest Non-Capital Cities in Africa | - | - |
| 42 | 33 Biggest Non-Coastal Cities in Africa | - | - |
| 1,892 | 44 Biggest Cities in the Middle East | - | - |
| 624 | All Cities in Africa with Population of 1 Million | - | - |
| 637 | All Cities in South America with Population of 1 Million | - | - |
| 753 | Biggest African Cities by Category | - | - |
| 631 | Biggest African Cities by Letter | - | - |
| 735 | Biggest Asian Cities A-Z | - | - |
| 398 | Biggest Black Sea Cities Quiz | - | - |
| 1,006 | Biggest "Burg" Cities in Germany | - | - |
| 483 | Biggest Cities by Ending | - | - |
| 152 | Biggest Cities in Afghanistan | - | - |
| 214 | Biggest Cities in Alberta | - | - |
| 82 | Biggest Cities in Cambodia Quiz | - | - |
| 260 | Biggest Cities in D.R. Congo | - | - |
| 855 | Biggest Cities in each Asian Country - Extreme | - | - |
| 235 | Biggest Cities in each Chinese Province - Extreme | - | - |
| 371 | Biggest Cities in each Spanish Region - Extreme | - | - |
| 484 | Biggest Cities in each Swedish County - Extreme | - | - |
| 197 | Biggest Cities in Egypt Quiz | - | - |
| 1,444 | Biggest Cities in France - Extreme | - | - |
| 343 | Biggest Cities in Greece | - | - |
| 200 | Biggest Cities in Indonesia Quiz | - | - |
| 192 | Biggest Cities in Iran Quiz | - | - |
| 236 | Biggest Cities in Iraq | - | - |
| 434 | Biggest Cities in Israel and Palestine | - | - |
| 246 | Biggest Cities in Kenya | - | - |
| 537 | Biggest Cities in Landlocked Countries | - | - |
| 85 | Biggest Cities in Manitoba | - | - |
| 95 | Biggest Cities in Myanmar | - | - |
| 188 | Biggest Cities in Norway Quiz | - | - |
| 318 | Biggest Cities in Pakistan Quiz | - | - |
| 431 | Biggest Cities in Québec | - | - |
| 153 | Biggest Cities in South Africa Quiz | - | - |
| 130 | Biggest Cities in South Korea Quiz | - | - |
| 334 | Biggest Cities in Southeast Asia | - | - |
| 407 | Biggest Cities in "Stan" Countries Quiz | - | - |
| 154 | Biggest Cities in Taiwan | - | - |
| 78 | Biggest Cities in Tanzania | - | - |
| 1,947 | Biggest Cities in the Arab World | - | - |
| 22,430 | Biggest Cities in the Confederate States in 1860 | 0 | - |
| 151 | Biggest Cities in the Philippines Quiz | - | - |
| 581 | Biggest Cities in the United States with Exceptions | - | - |
| 205 | Biggest Cities in Turkey - Extreme | - | - |
| 105 | Biggest Cities in Uzbekistan Quiz | - | - |
| 324 | Biggest Cities of FIFA World Cup | - | - |
| 282 | Biggest Cities On Danube | - | - |
| 258 | Biggest Cities On Rhine | - | - |
| 275 | Biggest Cities once in the Dutch Empire | - | - |
| 431 | Biggest Cities once in the French Empire | - | - |
| 675 | Biggest Cities once in the Japanese Empire | - | - |
| 237 | Biggest Cities once in the Mongol Empire | - | - |
| 494 | Biggest Cities Whose Name End with "City" | - | - |
| 223 | Biggest City by Lake | - | - |
| 314 | Biggest City In Each German State | - | - |
| 213 | Biggest Coastal Cities of China | - | - |
| 509 | Biggest Countries by Water Area | - | - |
| 524 | Biggest Four-Letter City by Country | - | - |
| 286 | Biggest Inland Cities in The World Quiz | - | - |
| 279 | Biggest Inland City by Country | - | - |
| 227 | Biggest "Pur" Cities in India | - | - |
| 478 | Biggest Russian Cities A-Z | - | - |
| 187 | Biggest South Asian Cities By Letter | - | - |
| 149 | Biggest South China Sea Cities Quiz | - | - |
| 1,064 | Biggest U.S. Cities that Contain U.S. State Names | - | - |
| 687 | Biggest "Ville" Cities - United States | - | - |
| 1,862 | Biggest World Cities That End in A | - | - |
| 30,084 | Five Biggest Cities by Country - Extreme | 0 | - |
| 914 | Five Biggest Cities by Region Quiz #1 | - | - |
| 1,273 | Five Biggest Cities by Region Quiz #2 | - | - |
| 442 | Five Biggest Cities by Region Quiz #3 | - | - |
| 1,684 | Largest World Cities With Six Letters | - | - |
| 329 | Second Biggest African Cities Quiz | - | - |
| 362 | Second Biggest Asian Cities Quiz | - | - |
| 448 | Three Biggest Cities by African Country | - | - |
| 947 | Three Biggest Cities by Body of Water | - | - |
| 313 | Top 10 Cities with the Most Japanese Nationals | - | - |
| 434 | Top 10 U.S. Cities with the Most Chinese | - | - |
