| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,484 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 127,170 |
| Europe Capital to Country | 0 | - | 4.99 | 252,776 |
| EU Capitals with No Hints | 0 | - | 4.96 | 147,425 |
| European Capitals by Map | 0 | - | 4.99 | 142,781 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 93,218 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,471 |
| European Coastal Capitals | 0 | - | 4.95 | 91,582 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 226,937 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,828 |
| Official Cities in the UK | 0 | - | 4.89 | 287,173 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,776 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,428 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,724 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,877 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 94,934 |
| Cities in European History #1 | 0 | - | 4.63 | 135,000 |
| British Cities with the Most Tourists | 0 | - | 4.83 | 71,216 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 152,145 |
| Name a Valid European Capital | 0 | - | 4.95 | 154,137 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,743 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,701 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,973 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,203 |
| Random European Capital to Country | 0 | - | 4.98 | 192,475 |
| Random European Country to Capital | 0 | - | 4.93 | 166,150 |
| European Capitals by Airport Code | 0 | - | 4.93 | 37,053 |
| Name a City - European Countries | 0 | - | 4.89 | 66,492 |
| Africa Capitals Quiz | 0 | - | 4.99 | 745,691 |
| Asia Capitals Quiz | 0 | - | 4.98 | 700,617 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,635 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,593 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,906 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,831 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,784 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 76,468 |
| Former Capitals | 0 | - | 4.88 | 71,754 |
| Asia Capital to Country | 0 | - | 4.96 | 127,775 |
| African Capitals by Map | 0 | - | 4.99 | 142,763 |
| Asian Capitals by Map | 0 | - | 4.98 | 64,200 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,309 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,578 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,275 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,881 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 235,092 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,524 |
| South America Capitals Quiz | 0 | - | 5.00 | 486,028 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,925 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,420 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,551 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 62,126 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,645 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,672 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 95,437 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 83,587 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 27,337 |
| World Capitals Quiz | 0 | - | 5.00 | 5,118,572 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,886 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,213 |
| Capitals of the Stans | 0 | - | 4.95 | 27,271 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,727 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,701,558 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,692 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 49,171 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,604,033 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,850 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,561 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 94,669 |
| Random Asian Country to Capital | 0 | - | 4.92 | 97,162 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,641 |
| Random African Capital to Country | 0 | - | 4.97 | 101,561 |
| Random African Country to Capital | 0 | - | 4.94 | 71,945 |
| Melbourne Suburbs | 0 | - | 4.86 | 54,602 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,949 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,539 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 100,545 |
| British Places A-Z | 0 | - | 4.29 | 80,167 |
| Word Scramble - U.K. Cities | 0 | - | 4.57 | 65,096 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 107,308 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,692 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,740 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,232 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,398 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,483 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,890 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 151,501 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,394 |
| Which City in Europe? | 0 | - | 4.83 | 108,057 |
| Boroughs of London | 0 | - | 4.63 | 88,769 |
| London Geography | 0 | - | 4.47 | 59,946 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,703 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,096 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,934 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,714 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,153 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,184 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,048 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,652 |
| Biggest English Cities by Century | 0 | - | 4.91 | 107,137 |
| North American Sports Cities | 0 | - | 4.82 | 173,376 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,622 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,662 |
| 20 Northernmost English Cities | 0 | - | 4.49 | 23,903 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,957 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 103,131 |
| Name a Valid World City | 0 | - | 4.85 | 72,217 |
| Cities by Former Name | 0 | - | 4.83 | 92,233 |
| Capitals in their Native Languages | 0 | - | 4.95 | 134,014 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,694 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,174 |
| Nearest Capital City #1 | 0 | - | 4.83 | 58,078 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,455 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,616 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,563 |
| Countries by Capital City | 0 | - | 5.00 | 69,796 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,270 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,445 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 85,054 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 70,041 |
| Moved Capital Cities | 0 | - | 4.96 | 74,782 |
| World Capitals by Map | 0 | - | 5.00 | 290,312 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 59,000 |
| Random Capital to Country | 0 | - | 4.99 | 2,605,750 |
| Europe Capitals - One Minute Sprint | 0 | - | 4.40 | 202,048 |
| World Capitals Closest to Madrid | 0 | - | 4.50 | 42,476 |
| World Capitals with a Unique First Letter | 0 | - | 4.83 | 75,895 |
| Random Country to Capital | 0 | - | 4.98 | 931,205 |
| Capitals Starting With H | 0 | - | 4.91 | 93,516 |
| Capitals Starting With K | 0 | - | 4.89 | 84,576 |
| Capitals Starting With L | 0 | - | 4.81 | 96,184 |
| Capitals Starting With M | 0 | - | 4.94 | 109,483 |
| Capitals Starting With P | 0 | - | 4.88 | 79,198 |
| Capitals Starting With R | 0 | - | 4.89 | 82,659 |
| Capitals Starting With S | 0 | - | 4.90 | 86,759 |
| Capitals Starting With T | 0 | - | 4.86 | 77,005 |
| Capitals Starting With W | 0 | - | 4.87 | 91,835 |
| Capitals Starting With A | 0 | - | 4.97 | 129,380 |
| Capitals Starting With B | 0 | - | 4.89 | 119,741 |
| Capitals Starting With D | 0 | - | 4.94 | 97,374 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 90,072 |
| US States and State Capitals | 0 | - | 4.99 | 166,255 |
| Which City in Canada? | 0 | - | 4.83 | 57,446 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.54 | 49,710 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 98,044 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,994 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,283 |
| Ancient Greek Words | 0 | - | 4.93 | 112,760 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,774 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,543 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,317 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 349,735 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,094 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,656 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,345 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,600 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,969 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,937 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,735 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,853 |
| European Cities by Map #2 | 0 | - | 4.49 | 47,489 |
| European Cities by Map #1 | 0 | - | 4.69 | 55,935 |
| North America Cities by Map | 0 | - | 4.41 | 47,986 |
| Asian Cities by Map #1 | 0 | - | 4.50 | 40,978 |
| Mediterranean Cities by Map | 0 | - | 4.51 | 51,255 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 47,148 |
| Summer Olympics Host Cities | 0 | - | 4.97 | 216,978 |
| Random European City to Country | 0 | - | 4.69 | 118,596 |
| Random Asian City to Country | 0 | - | 4.56 | 44,656 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,908 |
| Cities in Squares on a Map - Europe | 0 | - | 4.70 | 54,673 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,762 |
| Random Cities Near Paris on a Map | 0 | - | 4.55 | 39,869 |
| Capital Cities Chain | 0 | - | 4.84 | 83,613 |
| Coldest World Capitals | 0 | - | 4.95 | 134,383 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,314 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,805 |
| Countries and Capitals of the World With a Map | 0 | - | 5.00 | 69,642 |
| Random U.S. State Capitals on a Map | 0 | - | 4.93 | 105,114 |
| Which City in Germany? | 0 | - | 4.50 | 137,667 |
| Which City in Italy? | 0 | - | 4.68 | 90,700 |
| Which City in France? | 0 | - | 4.67 | 73,490 |
| Which City in Spain? | 0 | - | 4.50 | 50,177 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,766 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,769 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,835 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,272 |
| UK Cities Map Quiz | 0 | - | 4.96 | 467,017 |
| Single Vowel Capitals | 0 | - | 4.83 | 14,801 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,876 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,755 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 185,606 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 195,454 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 105,178 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 109,022 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,430 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 226,274 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 116,842 |
| All 100k+ Cities in Europe on a Map | 0 | - | 4.99 | 103,322 |
| All 50k+ Cities in Europe with a Map | 0 | - | 4.95 | 35,746 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,441 |
