| Name a Valid European Capital | 0 | - | 4.95 | 154,070 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,830 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 228,215 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,543 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,999 |
| Name a Valid African Country | 0 | - | 4.98 | 155,330 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,174 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,609 |
| Africa Capitals Quiz | 0 | - | 4.99 | 745,384 |
| Asia Capitals Quiz | 0 | - | 4.98 | 700,281 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,180 |
| Random European Capital to Country | 0 | - | 4.98 | 192,411 |
| Random European Country to Capital | 0 | - | 4.93 | 166,112 |
| Random Asian Country to Capital | 0 | - | 4.92 | 97,126 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,624 |
| Random African Capital to Country | 0 | - | 4.97 | 101,533 |
| Random African Country to Capital | 0 | - | 4.95 | 71,928 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,322 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,592 |
| World Capitals Quiz | 0 | - | 5.00 | 5,116,330 |
| Europe Capital to Country | 0 | - | 4.99 | 252,700 |
| Asia Capital to Country | 0 | - | 4.96 | 127,739 |
| EU Capitals with No Hints | 0 | - | 4.96 | 147,371 |
| European Capitals by Map | 0 | - | 4.99 | 142,670 |
| African Capitals by Map | 0 | - | 4.99 | 142,679 |
| Asian Capitals by Map | 0 | - | 4.98 | 64,159 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 93,179 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,436 |
| European Coastal Capitals | 0 | - | 4.95 | 91,538 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,288 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,461 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 226,827 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,269 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,352 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,457 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,597 |
| Name a Valid Asian Capital | 0 | - | 4.53 | 62,137 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,809 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,785 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,392 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,753 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,368 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,527 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,698 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 62,092 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,850 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,342 |
| Capitals of the Stans | 0 | - | 4.95 | 27,254 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,936 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,603,199 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 90,029 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,837 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 134,579 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 22,376 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 81,591 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 90,042 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,719 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,654 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,145 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,617 |
| Countries with Megacities | 0 | - | 4.99 | 268,096 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,265 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,396 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,601 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,499 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,565 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,623 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,118 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,386 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,512 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,468 |
| Countries by Capital City | 0 | - | 5.00 | 69,708 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,223 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,394 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,589 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 85,004 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 94,655 |
| Moved Capital Cities | 0 | - | 4.96 | 74,756 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,866 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,642 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,961 |
| Capitals in Random Squares of the World Map | 0 | - | 4.92 | 76,197 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,996 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,592 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,499 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,594 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,877 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,167 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,408 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,755 |
| Resort Towns by Country | 0 | - | 4.30 | 40,102 |
| North American Sports Cities | 0 | - | 4.82 | 173,341 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,617 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 103,083 |
| Name a City - European Countries | 0 | - | 4.89 | 66,437 |
| Cities by Former Name | 0 | - | 4.83 | 92,214 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,999 |
| Nearest Capital City #1 | 0 | - | 4.83 | 58,060 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,217 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 70,008 |
| World Capitals by Map | 0 | - | 5.00 | 290,118 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,966 |
| Random Capital to Country | 0 | - | 4.99 | 2,605,001 |
| Random Country to Capital | 0 | - | 4.98 | 930,694 |
| Capitals Starting With H | 0 | - | 4.91 | 93,484 |
| Capitals Starting With K | 0 | - | 4.89 | 84,541 |
| Capitals Starting With L | 0 | - | 4.81 | 96,137 |
| Capitals Starting With M | 0 | - | 4.94 | 109,432 |
| Capitals Starting With P | 0 | - | 4.88 | 79,152 |
| Capitals Starting With R | 0 | - | 4.89 | 82,636 |
| Capitals Starting With S | 0 | - | 4.90 | 86,727 |
| Capitals Starting With T | 0 | - | 4.86 | 76,976 |
| Capitals Starting With W | 0 | - | 4.87 | 91,812 |
| Capitals Starting With A | 0 | - | 4.97 | 129,328 |
| Capitals Starting With B | 0 | - | 4.89 | 119,693 |
| Capitals Starting With D | 0 | - | 4.94 | 97,346 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,868 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,386 |
| Which City in Europe? | 0 | - | 4.83 | 108,029 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,342 |
| Olympic Host Countries | 0 | - | 4.98 | 202,330 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,305 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,571 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 315,596 |
| The Only European Country ... | 0 | - | 4.91 | 219,717 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,447 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,900 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,007 |
| Countries of Africa | 0 | - | 5.00 | 2,566,012 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,979 |
| Countries that Beat China | 0 | - | 4.85 | 117,028 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,785 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,608 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,161 |
| Single Vowel Capitals | 0 | - | 4.83 | 14,783 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 151,429 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,766 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,698 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,994 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,633 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,904 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,933 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 91,096 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,292 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,924 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,097 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,055 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,638 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,314 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,587 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,946 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,907 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,350 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,814 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 73,166 |
| Cities with the Most Foreign Embassies | 0 | - | 4.69 | 47,244 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,841 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,731 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 47,104 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,898 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 76,420 |
| Random European City to Country | 0 | - | 4.69 | 118,570 |
| Random Asian City to Country | 0 | - | 4.56 | 44,647 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,859 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,728 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 24,016 |
| Former Capitals | 0 | - | 4.88 | 71,748 |
| Capital Cities Chain | 0 | - | 4.84 | 83,561 |
| Coldest World Capitals | 0 | - | 4.95 | 134,343 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,288 |
| Europe Capitals - One Minute Sprint | 0 | - | 4.40 | 202,015 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,770 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 94,914 |
| Which City in Canada? | 0 | - | 4.83 | 57,425 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,393 |
| Countries of the Middle East | 0 | - | 4.96 | 203,351 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,419 |
| Slavic Countries | 0 | - | 4.96 | 112,549 |
| African Island Countries | 0 | - | 4.96 | 102,785 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,261 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,814 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 53,812 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,868 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 171,453 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,845 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 128,079 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,542 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 155,031 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 145,428 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,240 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,833 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,778 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,097 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 145,016 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,578 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 118,110 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,752 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 100,105 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,365 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.95 | 47,796 |
