| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,836 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,096 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,061 |
| Asia Capitals Quiz | 0 | - | 4.98 | 695,458 |
| Asia Capital to Country | 0 | - | 4.96 | 126,961 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,958 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,710 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,623 |
| Capitals of the Stans | 0 | - | 4.95 | 26,970 |
| Africa Capitals Quiz | 0 | - | 4.99 | 740,599 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,769 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,077 |
| Name a City - European Countries | 0 | - | 4.90 | 65,766 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,062 |
| Random Asian Capitals on a Map | 0 | - | 4.82 | 51,150 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,170 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,068 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,534 |
| Former Capitals | 0 | - | 4.88 | 71,549 |
| Europe Capital to Country | 0 | - | 4.99 | 251,124 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,361 |
| European Capitals by Map | 0 | - | 4.99 | 140,486 |
| African Capitals by Map | 0 | - | 4.99 | 137,729 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,075 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,393 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,730 |
| European Coastal Capitals | 0 | - | 4.95 | 90,915 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,158 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,830 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,965 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,947 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,366 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,443 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,622 |
| Official Cities in the UK | 0 | - | 4.89 | 284,856 |
| Cities in European History #1 | 0 | - | 4.63 | 134,281 |
| World Capitals Quiz | 0 | - | 5.00 | 5,088,155 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,858 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,787 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,269 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,625 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,360 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,463 |
| British Cities with the Most Tourists | 0 | - | 4.83 | 70,507 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 149,712 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,322 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,123 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,747 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,324 |
| Name a Valid European Capital | 0 | - | 4.95 | 152,946 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,344 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,828 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,592,615 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,887 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,651 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,852 |
| Name a Valid Asian Capital | 0 | - | 4.53 | 61,810 |
| Random European Capital to Country | 0 | - | 4.98 | 191,585 |
| Random European Country to Capital | 0 | - | 4.93 | 165,488 |
| Random African Capital to Country | 0 | - | 4.97 | 100,988 |
| Random African Country to Capital | 0 | - | 4.94 | 71,463 |
| Melbourne Suburbs | 0 | - | 4.86 | 53,702 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,468 |
| Countries Bordering Turkey | 0 | - | 4.98 | 117,598 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,699 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,693,984 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,475 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,047 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,655 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,625 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,767 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,623 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,478 |
| Countries by Capital City | 0 | - | 5.00 | 68,767 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,450 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,890 |
| World Capitals by Proximity | 0 | - | 4.90 | 332,458 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,481 |
| Asian Coastal Capitals | 0 | - | 4.52 | 22,222 |
| Moved Capital Cities | 0 | - | 4.96 | 74,403 |
| 10 Westernmost Capital Cities in Asia | 0 | - | 4.62 | 16,036 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,001 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,041 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,672 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,356 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,209 |
| Which City in Europe? | 0 | - | 4.83 | 107,651 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,577 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,623 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,445 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,965 |
| Random Capital to Country | 0 | - | 4.99 | 2,595,924 |
| Random Country to Capital | 0 | - | 4.98 | 923,723 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 144,995 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,130 |
| North American Sports Cities | 0 | - | 4.83 | 172,731 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,429 |
| European Cities by Map #2 | 0 | - | 4.49 | 47,394 |
| European Cities by Map #1 | 0 | - | 4.67 | 55,815 |
| Asian Cities by Map #1 | 0 | - | 4.50 | 40,912 |
| Mediterranean Cities by Map | 0 | - | 4.51 | 51,172 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,474 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,652 |
| Cities in Squares on a Map - Europe | 0 | - | 4.70 | 54,165 |
| Cities by Former Name | 0 | - | 4.83 | 91,788 |
| India State Capitals Quiz | 0 | - | 4.28 | 59,804 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,522 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,798 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,481 |
| World Capitals by Map | 0 | - | 5.00 | 287,816 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,545 |
| Capitals Starting With H | 0 | - | 4.91 | 92,796 |
| Capitals Starting With K | 0 | - | 4.88 | 83,852 |
| Capitals Starting With L | 0 | - | 4.81 | 88,315 |
| Capitals Starting With M | 0 | - | 4.93 | 108,186 |
| Capitals Starting With P | 0 | - | 4.88 | 78,427 |
| Capitals Starting With R | 0 | - | 4.87 | 82,044 |
| Capitals Starting With S | 0 | - | 4.90 | 86,029 |
| Capitals Starting With T | 0 | - | 4.85 | 76,374 |
| Capitals Starting With W | 0 | - | 4.87 | 91,432 |
| Capitals Starting With A | 0 | - | 4.97 | 128,384 |
| Capitals Starting With B | 0 | - | 4.89 | 118,801 |
| Capitals Starting With D | 0 | - | 4.93 | 96,702 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,333 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 94,509 |
| Which City in Canada? | 0 | - | 4.83 | 57,184 |
| Istanbul City Trivia | 0 | - | 4.25 | 12,408 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,122 |
| Single Vowel Capitals | 0 | - | 4.81 | 14,585 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,782 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,960 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,235 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,853 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,571 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,341 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,980 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,371 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,675 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,482 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,636 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,648 |
| North America Cities by Map | 0 | - | 4.41 | 47,868 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,462 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,692 |
| Random European City to Country | 0 | - | 4.69 | 118,134 |
| Random Asian City to Country | 0 | - | 4.56 | 44,566 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,339 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,221 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,485 |
| Capital Cities Chain | 0 | - | 4.84 | 83,037 |
| Coldest World Capitals | 0 | - | 4.95 | 133,691 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,827 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,181 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,293 |
| US States and State Capitals | 0 | - | 4.99 | 163,781 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,409 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,784 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,513 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,819 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,650 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,493 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,256 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,211 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,966 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,269 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,539 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 72,965 |
| Cities with the Most Foreign Embassies | 0 | - | 4.69 | 47,182 |
| U.S Cities by African-American Population | 0 | - | 4.42 | 95,453 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,599 |
| South American Cities on the Map | 0 | - | 4.53 | 35,480 |
| Southeast Asian Cities by Map | 0 | - | 4.63 | 26,759 |
| 1M Cities by Proximity - United States | 0 | - | 4.63 | 150,922 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.74 | 41,060 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,510 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,030 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 48,623 |
| German Cities with the Most Tourists | 0 | - | 4.77 | 48,950 |
| Cities on Route 66 on a Map | 0 | - | 4.53 | 33,192 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,646 |
| World Capitals Closest to Jerusalem | 0 | - | 4.47 | 45,010 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,406 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,758 |
| Most Guessed Capitals on JetPunk | 0 | - | 4.87 | 126,851 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,411 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 94,334 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,285 |
| Flags to Capitals #1 | 0 | - | 4.96 | 58,662 |
| Flags to Capitals #2 | 0 | - | 4.95 | 44,559 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 133,574 |
| Five Most Guessed Capital Cities by Continent | 0 | - | 4.86 | 94,340 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 227,081 |
| Random World Capitals on a Map | 0 | - | 4.93 | 135,008 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 80,884 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,570 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,249 |
| Asian Capital Superlatives - Top 2 | 0 | - | 4.37 | 28,139 |
| The Only Country ... | 0 | - | 4.91 | 81,507 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,366 |
| Vietnam War Countries | 0 | - | 4.82 | 94,403 |
