| Five Most Inland Capital Cities by Continent | 0 | - | 4.91 | 13,178 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 226,623 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,173 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,912 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,943 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,146 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,529 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,682 |
| Random European Capital to Country | 0 | - | 4.98 | 190,956 |
| Random European Country to Capital | 0 | - | 4.93 | 165,166 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,470 |
| Random Asian Capital to Country | 0 | - | 4.97 | 102,772 |
| Random African Capital to Country | 0 | - | 4.97 | 100,758 |
| Random African Country to Capital | 0 | - | 4.94 | 71,250 |
| World Capitals Quiz | 0 | - | 5.00 | 5,075,295 |
| Europe Capital to Country | 0 | - | 4.99 | 250,389 |
| Asia Capital to Country | 0 | - | 4.96 | 126,686 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,915 |
| European Capitals by Map | 0 | - | 4.99 | 139,278 |
| African Capitals by Map | 0 | - | 4.99 | 133,824 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,441 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,102 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,446 |
| European Coastal Capitals | 0 | - | 4.95 | 90,625 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,600 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,088 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,107 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,843 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,814 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,581 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,910 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,503 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,063 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,298 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,859 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,200 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,168 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,392 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,308 |
| Monarchies of Europe | 0 | - | 4.90 | 98,172 |
| Monarchies of Asia | 0 | - | 4.97 | 71,105 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,906 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,471 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,939 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,115 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 133,075 |
| Name a Valid European Capital | 0 | - | 4.95 | 152,426 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,464 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,627 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 134,652 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,208 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,150 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,046 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,990 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,064 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,427 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,537 |
| Countries with Megacities | 0 | - | 4.99 | 263,581 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,375 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,289 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,653 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,325 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,182 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,277 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,430 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,524 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,263 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,040 |
| Countries by Capital City | 0 | - | 5.00 | 68,318 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,188 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,669 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,520 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,223 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,352 |
| Moved Capital Cities | 0 | - | 4.96 | 74,223 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,383 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,515 |
| Name a World Capital A-Z | 0 | - | 5.00 | 176,171 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,052 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,296 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,767 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,831 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,740 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,857 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,934 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,413 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,564 |
| North American Sports Cities | 0 | - | 4.83 | 172,408 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,330 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,064 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,837 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,408 |
| Cities by Former Name | 0 | - | 4.83 | 91,589 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,409 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,667 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,005 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,911 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,234 |
| World Capitals by Map | 0 | - | 5.00 | 286,548 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,330 |
| Random Capital to Country | 0 | - | 4.99 | 2,591,917 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,835 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,005 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,732 |
| Random Country to Capital | 0 | - | 4.98 | 920,852 |
| Capitals Starting With H | 0 | - | 4.91 | 92,593 |
| Capitals Starting With K | 0 | - | 4.88 | 83,568 |
| Capitals Starting With L | 0 | - | 4.81 | 88,123 |
| Capitals Starting With M | 0 | - | 4.93 | 107,845 |
| Capitals Starting With P | 0 | - | 4.88 | 78,235 |
| Capitals Starting With R | 0 | - | 4.87 | 81,863 |
| Capitals Starting With S | 0 | - | 4.90 | 85,817 |
| Capitals Starting With T | 0 | - | 4.85 | 76,190 |
| Capitals Starting With W | 0 | - | 4.87 | 91,319 |
| Capitals Starting With A | 0 | - | 4.97 | 128,091 |
| Capitals Starting With B | 0 | - | 4.89 | 118,541 |
| Capitals Starting With D | 0 | - | 4.93 | 96,485 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,185 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,145 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,113 |
| Olympic Host Countries | 0 | - | 4.98 | 200,793 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,863 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,315 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 309,597 |
| The Only European Country ... | 0 | - | 4.91 | 216,740 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,342 |
| Hindu Countries | 0 | - | 4.86 | 50,173 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,196 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,661 |
| Countries of Africa | 0 | - | 5.00 | 2,538,073 |
| Single Vowel Capitals | 0 | - | 4.81 | 14,480 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 144,603 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,052 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,766 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,884 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,657 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,624 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,478 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,922 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,185 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,331 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,994 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,030 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,312 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,207 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,769 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,265 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,556 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,274 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,246 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,407 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 72,876 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,147 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,566 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,724 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,009 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,103 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,135 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 130,919 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,817 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,227 |
| Former Capitals | 0 | - | 4.88 | 71,467 |
| Capital Cities Chain | 0 | - | 4.84 | 82,765 |
| Coldest World Capitals | 0 | - | 4.95 | 133,574 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,589 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,795 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,920 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 89,062 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,021 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,263 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,806 |
| Countries of the Middle East | 0 | - | 4.96 | 201,229 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,328 |
| Slavic Countries | 0 | - | 4.96 | 111,698 |
| African Island Countries | 0 | - | 4.96 | 101,663 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,893 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,270 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,283 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.81 | 47,081 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,999 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,153 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,609 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,934 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,539 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,564 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 144,159 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,036 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,701 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,779 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,626 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,251 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,239 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,614 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,282 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,178 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,022 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,294 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,191 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,291 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,901 |
