| Countries of the Soviet Union | 0 | - | 4.98 | 195,742 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,257 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,710 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,391 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,186 |
| Random European Capital to Country | 0 | - | 4.98 | 192,421 |
| Random European Country to Capital | 0 | - | 4.93 | 166,131 |
| Name a City - European Countries | 0 | - | 4.89 | 66,459 |
| Africa Capitals Quiz | 0 | - | 4.99 | 745,471 |
| Asia Capitals Quiz | 0 | - | 4.98 | 700,448 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,748 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 76,432 |
| Former Capitals | 0 | - | 4.88 | 71,750 |
| Europe Capital to Country | 0 | - | 4.99 | 252,724 |
| Asia Capital to Country | 0 | - | 4.96 | 127,747 |
| EU Capitals with No Hints | 0 | - | 4.96 | 147,381 |
| European Capitals by Map | 0 | - | 4.99 | 142,719 |
| African Capitals by Map | 0 | - | 4.99 | 142,716 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,892 |
| Asian Capitals by Map | 0 | - | 4.98 | 64,178 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 93,188 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,445 |
| European Coastal Capitals | 0 | - | 4.95 | 91,546 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,295 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,506 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 226,849 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,270 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,607 |
| Official Cities in the UK | 0 | - | 4.89 | 287,067 |
| Cities in European History #1 | 0 | - | 4.63 | 134,972 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,830 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,402 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,761 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,534 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,705 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 62,105 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,855 |
| British Cities with the Most Tourists | 0 | - | 4.83 | 71,170 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 152,053 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 95,385 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 83,538 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 27,302 |
| World Capitals Quiz | 0 | - | 5.00 | 5,117,043 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,873 |
| Name a Valid European Capital | 0 | - | 4.95 | 154,097 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,731 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,715 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,743 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,801 |
| Capitals of the Stans | 0 | - | 4.95 | 27,263 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,701,220 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 107,277 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,669 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,873 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,603,437 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,652 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,224 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,962 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,363 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,470 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,612 |
| Random Asian Country to Capital | 0 | - | 4.92 | 97,150 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,629 |
| Random African Capital to Country | 0 | - | 4.97 | 101,549 |
| Random African Country to Capital | 0 | - | 4.94 | 71,930 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,872 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,391 |
| Melbourne Suburbs | 0 | - | 4.86 | 54,578 |
| Which City in Europe? | 0 | - | 4.83 | 108,039 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,670 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 146,153 |
| European Capitals by Airport Code | 0 | - | 4.93 | 37,033 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,587 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,521 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,641 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,134 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,410 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,533 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,498 |
| Countries by Capital City | 0 | - | 5.00 | 69,721 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,242 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,405 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,645 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 85,015 |
| Moved Capital Cities | 0 | - | 4.96 | 74,764 |
| World Capitals with a Unique First Letter | 0 | - | 4.83 | 75,883 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 151,451 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 90,054 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 94,919 |
| Which City in Canada? | 0 | - | 4.83 | 57,434 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,131 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,615 |
| Biggest Axis-Controlled Cities | 0 | - | 4.44 | 49,095 |
| North American Sports Cities | 0 | - | 4.82 | 173,356 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,620 |
| European Cities by Map #2 | 0 | - | 4.49 | 47,483 |
| European Cities by Map #1 | 0 | - | 4.69 | 55,928 |
| Asian Cities by Map #1 | 0 | - | 4.50 | 40,974 |
| Mediterranean Cities by Map | 0 | - | 4.51 | 51,250 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,954 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 103,094 |
| Cities in Squares on a Map - Europe | 0 | - | 4.70 | 54,655 |
| Name a Valid World City | 0 | - | 4.85 | 72,189 |
| Cities by Former Name | 0 | - | 4.83 | 92,224 |
| Capitals in their Native Languages | 0 | - | 4.95 | 134,002 |
| Nearest Capital City #1 | 0 | - | 4.83 | 58,066 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 70,014 |
| World Capitals by Map | 0 | - | 5.00 | 290,184 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,975 |
| Random Capital to Country | 0 | - | 4.99 | 2,605,172 |
| Random Country to Capital | 0 | - | 4.98 | 930,918 |
| Capitals Starting With H | 0 | - | 4.91 | 93,493 |
| Capitals Starting With K | 0 | - | 4.89 | 84,551 |
| Capitals Starting With L | 0 | - | 4.81 | 96,151 |
| Capitals Starting With M | 0 | - | 4.94 | 109,441 |
| Capitals Starting With P | 0 | - | 4.88 | 79,164 |
| Capitals Starting With R | 0 | - | 4.89 | 82,644 |
| Capitals Starting With S | 0 | - | 4.90 | 86,738 |
| Capitals Starting With T | 0 | - | 4.86 | 76,983 |
| Capitals Starting With W | 0 | - | 4.87 | 91,818 |
| Capitals Starting With A | 0 | - | 4.97 | 129,344 |
| Capitals Starting With B | 0 | - | 4.89 | 119,703 |
| Capitals Starting With D | 0 | - | 4.94 | 97,355 |
| Random U.S. State Capitals on a Map | 0 | - | 4.93 | 105,089 |
| US States and State Capitals | 0 | - | 4.99 | 166,168 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,624 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,941 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,810 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,727 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 235,042 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 185,558 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 195,418 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 105,152 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 109,008 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,389 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,531 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,300 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 349,603 |
| 50 Biggest Cities in 1920 on a World Map | 0 | - | 4.99 | 78,710 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,068 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,645 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,321 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,593 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,954 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,913 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,416 |
| U.S Cities by African-American Population | 0 | - | 4.42 | 95,679 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,731 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,847 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,720 |
| South American Cities on the Map | 0 | - | 4.52 | 35,591 |
| North America Cities by Map | 0 | - | 4.41 | 47,982 |
| 1M Cities by Proximity - United States | 0 | - | 4.63 | 152,025 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 47,117 |
| Summer Olympics Host Cities | 0 | - | 4.97 | 216,923 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.74 | 41,308 |
| Random European City to Country | 0 | - | 4.69 | 118,576 |
| Random Asian City to Country | 0 | - | 4.56 | 44,648 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,870 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,683 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,517 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 49,146 |
| German Cities with the Most Tourists | 0 | - | 4.77 | 49,200 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,734 |
| Cities on Route 66 on a Map | 0 | - | 4.53 | 33,366 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 37,637 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 24,027 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,968 |
| World Capitals Closest to Jerusalem | 0 | - | 4.47 | 45,108 |
| Capital Cities Chain | 0 | - | 4.84 | 83,574 |
| Coldest World Capitals | 0 | - | 4.95 | 134,364 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,917 |
| Most Guessed Capitals on JetPunk | 0 | - | 4.88 | 127,604 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,558 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 94,657 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,590 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,294 |
| Flags to Capitals #1 | 0 | - | 4.96 | 59,060 |
| Flags to Capitals #2 | 0 | - | 4.95 | 44,913 |
| Five Most Guessed Capital Cities by Continent | 0 | - | 4.87 | 94,745 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 228,231 |
| Name a Valid Asian Capital | 0 | - | 4.53 | 62,145 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,781 |
| Countries and Capitals of the World With a Map | 0 | - | 5.00 | 69,577 |
| The Only Country ... | 0 | - | 4.91 | 82,121 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,640 |
| Vietnam War Countries | 0 | - | 4.82 | 94,782 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,835 |
| Countries of the German Empire | 0 | - | 4.51 | 38,323 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,929 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 195,019 |
| Single Vowel Capitals | 0 | - | 4.83 | 14,787 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 127,580 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 226,216 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 116,792 |
| All 100k+ Cities in Europe on a Map | 0 | - | 4.99 | 103,266 |
| All 50k+ Cities in Europe with a Map | 0 | - | 4.95 | 35,722 |
| British Places A-Z | 0 | - | 4.29 | 80,161 |
| Word Scramble - U.K. Cities | 0 | - | 4.57 | 65,094 |
| Southeast Asian Cities by Map | 0 | - | 4.63 | 26,823 |
