| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,170 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,620 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,046 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,573 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,023 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,160 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,964 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,844 |
| Random European Capital to Country | 0 | - | 4.98 | 189,086 |
| Random European Country to Capital | 0 | - | 4.92 | 147,361 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,300 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,338 |
| Random African Capital to Country | 0 | - | 4.97 | 99,683 |
| Random African Country to Capital | 0 | - | 4.94 | 70,163 |
| World Capitals Quiz | 0 | - | 5.00 | 5,027,050 |
| Europe Capital to Country | 0 | - | 4.99 | 247,345 |
| Asia Capital to Country | 0 | - | 4.96 | 125,648 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,334 |
| European Capitals by Map | 0 | - | 4.99 | 136,014 |
| African Capitals by Map | 0 | - | 4.99 | 132,081 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,001 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,089 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,539 |
| European Coastal Capitals | 0 | - | 4.95 | 89,671 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,152 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,462 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,595 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,387 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,058 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,907 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,601 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,571 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,348 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,042 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,093 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,654 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,659 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,385 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,721 |
| Monarchies of Europe | 0 | - | 4.90 | 97,235 |
| Monarchies of Asia | 0 | - | 4.97 | 70,546 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,394 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,232 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,538 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,339 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,624 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,813 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,321 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,386 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,720 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,128 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,310 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,172 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,020 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,183 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,050 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,459 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,868 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,326 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,915 |
| Countries with Megacities | 0 | - | 4.99 | 246,316 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,841 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,760 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,292 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,699 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,624 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,836 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,583 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,535 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,501 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,262 |
| Countries by Capital City | 0 | - | 5.00 | 66,499 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,240 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,829 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,058 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,357 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,134 |
| Moved Capital Cities | 0 | - | 4.96 | 73,531 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,435 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,341 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,054 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,135 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,067 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,907 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,057 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,746 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,751 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,786 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,414 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,516 |
| North American Sports Cities | 0 | - | 4.83 | 170,794 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,889 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,754 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 71,960 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,656 |
| Cities by Former Name | 0 | - | 4.84 | 90,889 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,647 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,199 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,780 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,778 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,817 |
| World Capitals by Map | 0 | - | 5.00 | 282,924 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,610 |
| Random Capital to Country | 0 | - | 4.99 | 2,576,693 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,217 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,583 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,759 |
| Random Country to Capital | 0 | - | 4.98 | 910,779 |
| Capitals Starting With H | 0 | - | 4.90 | 89,908 |
| Capitals Starting With K | 0 | - | 4.85 | 75,568 |
| Capitals Starting With L | 0 | - | 4.81 | 86,702 |
| Capitals Starting With M | 0 | - | 4.93 | 105,879 |
| Capitals Starting With P | 0 | - | 4.88 | 77,079 |
| Capitals Starting With R | 0 | - | 4.87 | 80,870 |
| Capitals Starting With S | 0 | - | 4.89 | 84,689 |
| Capitals Starting With T | 0 | - | 4.84 | 75,200 |
| Capitals Starting With W | 0 | - | 4.89 | 90,518 |
| Capitals Starting With A | 0 | - | 4.97 | 126,390 |
| Capitals Starting With B | 0 | - | 4.89 | 117,148 |
| Capitals Starting With D | 0 | - | 4.93 | 95,239 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,451 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,837 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,789 |
| Olympic Host Countries | 0 | - | 4.98 | 198,786 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,749 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,381 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 302,937 |
| The Only European Country ... | 0 | - | 4.91 | 213,566 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,907 |
| Hindu Countries | 0 | - | 4.85 | 49,458 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,363 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,162 |
| Countries of Africa | 0 | - | 5.00 | 2,505,274 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,247 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,233 |
| Australia A-Z | 0 | - | 4.54 | 49,768 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,791 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,090 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,092 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,195 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,790 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,316 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,489 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,436 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,344 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,192 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,196 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,535 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,504 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,738 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,134 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,137 |
| Southernmost Major Cities | 0 | - | 4.44 | 51,068 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,546 |
| European Cities A-Z by Clue #1 | 0 | - | 4.26 | 77,123 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,011 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,274 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,264 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,110 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,929 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,680 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,544 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,281 |
| U.S. Cities With Spanish Names | 0 | - | 4.93 | 22,009 |
| Former Capitals | 0 | - | 4.88 | 71,099 |
| Capital Cities Chain | 0 | - | 4.84 | 81,836 |
| Coldest World Capitals | 0 | - | 4.95 | 132,997 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,711 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,903 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,118 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,781 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,299 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,103 |
| Countries of the Middle East | 0 | - | 4.96 | 198,754 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,179 |
| Slavic Countries | 0 | - | 4.96 | 110,789 |
| African Island Countries | 0 | - | 4.96 | 100,689 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,465 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,831 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,207 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 44,863 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,027 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 168,994 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,729 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,609 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,393 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,960 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,695 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,514 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,614 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,689 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,121 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,099 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,218 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,488 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,177 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,336 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,150 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,444 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,961 |
