| Countries of the Soviet Union | 0 | - | 4.98 | 195,541 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,139 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,550 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,091 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,053 |
| Random European Capital to Country | 0 | - | 4.98 | 192,119 |
| Random European Country to Capital | 0 | - | 4.93 | 165,872 |
| Name a City - European Countries | 0 | - | 4.90 | 66,152 |
| Africa Capitals Quiz | 0 | - | 4.99 | 743,611 |
| Asia Capitals Quiz | 0 | - | 4.98 | 698,724 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,447 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 76,042 |
| Former Capitals | 0 | - | 4.88 | 71,675 |
| Europe Capital to Country | 0 | - | 4.99 | 252,038 |
| Asia Capital to Country | 0 | - | 4.96 | 127,379 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,947 |
| European Capitals by Map | 0 | - | 4.99 | 142,042 |
| African Capitals by Map | 0 | - | 4.99 | 142,101 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,932 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,888 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,853 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,167 |
| European Coastal Capitals | 0 | - | 4.95 | 91,294 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,184 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,627 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 225,749 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,156 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,279 |
| Official Cities in the UK | 0 | - | 4.89 | 286,184 |
| Cities in European History #1 | 0 | - | 4.63 | 134,599 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,147 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,217 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,573 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,387 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,574 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,936 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,700 |
| British Cities with the Most Tourists | 0 | - | 4.83 | 70,913 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 151,141 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,949 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,867 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 27,051 |
| World Capitals Quiz | 0 | - | 5.00 | 5,105,191 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,658 |
| Name a Valid European Capital | 0 | - | 4.95 | 153,594 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,553 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,563 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,346 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,414 |
| Capitals of the Stans | 0 | - | 4.95 | 27,135 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,698,543 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,974 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,417 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,687 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,599,214 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,405 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,147 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,813 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,255 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,361 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,386 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,979 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,409 |
| Random African Capital to Country | 0 | - | 4.97 | 101,335 |
| Random African Country to Capital | 0 | - | 4.95 | 71,742 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,637 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,311 |
| Melbourne Suburbs | 0 | - | 4.86 | 54,304 |
| Which City in Europe? | 0 | - | 4.83 | 107,878 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,268 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,659 |
| European Capitals by Airport Code | 0 | - | 4.93 | 36,808 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,281 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,491 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,335 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,963 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,189 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,208 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,123 |
| Countries by Capital City | 0 | - | 5.00 | 69,363 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,841 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,214 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,794 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,800 |
| Moved Capital Cities | 0 | - | 4.96 | 74,636 |
| World Capitals with a Unique First Letter | 0 | - | 4.83 | 75,802 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 150,968 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,839 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 94,759 |
| Which City in Canada? | 0 | - | 4.83 | 57,352 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,960 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,424 |
| Biggest Axis-Controlled Cities | 0 | - | 4.44 | 49,028 |
| North American Sports Cities | 0 | - | 4.82 | 173,139 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,556 |
| European Cities by Map #2 | 0 | - | 4.49 | 47,446 |
| European Cities by Map #1 | 0 | - | 4.69 | 55,879 |
| Asian Cities by Map #1 | 0 | - | 4.50 | 40,951 |
| Mediterranean Cities by Map | 0 | - | 4.51 | 51,215 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,515 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,941 |
| Cities in Squares on a Map - Europe | 0 | - | 4.69 | 54,474 |
| Name a Valid World City | 0 | - | 4.85 | 71,968 |
| Cities by Former Name | 0 | - | 4.83 | 92,034 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,680 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,975 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,812 |
| World Capitals by Map | 0 | - | 5.00 | 289,285 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,817 |
| Random Capital to Country | 0 | - | 4.99 | 2,601,310 |
| Random Country to Capital | 0 | - | 4.98 | 927,882 |
| Capitals Starting With H | 0 | - | 4.91 | 93,329 |
| Capitals Starting With K | 0 | - | 4.89 | 84,395 |
| Capitals Starting With M | 0 | - | 4.94 | 109,176 |
| Capitals Starting With P | 0 | - | 4.88 | 79,003 |
| Capitals Starting With R | 0 | - | 4.88 | 82,501 |
| Capitals Starting With S | 0 | - | 4.90 | 86,567 |
| Capitals Starting With T | 0 | - | 4.86 | 76,836 |
| Capitals Starting With W | 0 | - | 4.87 | 91,732 |
| Capitals Starting With A | 0 | - | 4.97 | 129,100 |
| Capitals Starting With B | 0 | - | 4.89 | 119,496 |
| Capitals Starting With D | 0 | - | 4.94 | 97,199 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,708 |
| US States and State Capitals | 0 | - | 4.99 | 165,306 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 106,933 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,718 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,939 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,386 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,387 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 185,019 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,689 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,848 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,835 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,979 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,419 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,133 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 348,650 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,875 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,513 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,190 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,511 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,852 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,756 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,235 |
| U.S Cities by African-American Population | 0 | - | 4.42 | 95,592 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,693 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,775 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,679 |
| South American Cities on the Map | 0 | - | 4.52 | 35,549 |
| North America Cities by Map | 0 | - | 4.41 | 47,937 |
| 1M Cities by Proximity - United States | 0 | - | 4.63 | 151,814 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,901 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,444 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.74 | 41,191 |
| Random European City to Country | 0 | - | 4.69 | 118,450 |
| Random Asian City to Country | 0 | - | 4.56 | 44,619 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,665 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,612 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,323 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 48,941 |
| German Cities with the Most Tourists | 0 | - | 4.77 | 49,102 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,573 |
| Cities on Route 66 on a Map | 0 | - | 4.53 | 33,303 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 37,469 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,828 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,835 |
| World Capitals Closest to Jerusalem | 0 | - | 4.47 | 45,061 |
| Capital Cities Chain | 0 | - | 4.84 | 83,357 |
| Coldest World Capitals | 0 | - | 4.95 | 134,152 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,853 |
| Most Guessed Capitals on JetPunk | 0 | - | 4.88 | 127,289 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,484 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 94,531 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,459 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,116 |
| Flags to Capitals #1 | 0 | - | 4.96 | 58,911 |
| Flags to Capitals #2 | 0 | - | 4.95 | 44,759 |
| Five Most Guessed Capital Cities by Continent | 0 | - | 4.87 | 94,564 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 227,890 |
| Name a Valid Asian Capital | 0 | - | 4.53 | 61,989 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,555 |
| Countries and Capitals of the World With a Map | 0 | - | 5.00 | 68,983 |
| The Only Country ... | 0 | - | 4.91 | 81,867 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,486 |
| Vietnam War Countries | 0 | - | 4.82 | 94,605 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,362 |
| Countries of the German Empire | 0 | - | 4.51 | 38,176 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,860 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,699 |
| Single Vowel Capitals | 0 | - | 4.83 | 14,731 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 127,461 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,730 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 116,450 |
| All 100k+ Cities in Europe on a Map | 0 | - | 4.99 | 102,856 |
| British Places A-Z | 0 | - | 4.29 | 80,099 |
| Word Scramble - U.K. Cities | 0 | - | 4.57 | 65,035 |
| Southeast Asian Cities by Map | 0 | - | 4.63 | 26,801 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,998 |
| Random U.S. City to State | 0 | - | 4.45 | 76,902 |
| Name a Valid U.S. City over 100,000 | 0 | - | 4.42 | 40,441 |
