| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,200 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,633 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,060 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,776 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,279 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,166 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,982 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,885 |
| Random European Capital to Country | 0 | - | 4.98 | 189,122 |
| Random European Country to Capital | 0 | - | 4.92 | 147,379 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,311 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,353 |
| Random African Capital to Country | 0 | - | 4.97 | 99,696 |
| Random African Country to Capital | 0 | - | 4.94 | 70,170 |
| World Capitals Quiz | 0 | - | 5.00 | 5,028,435 |
| Europe Capital to Country | 0 | - | 4.99 | 247,400 |
| Asia Capital to Country | 0 | - | 4.96 | 125,681 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,367 |
| European Capitals by Map | 0 | - | 4.99 | 136,095 |
| African Capitals by Map | 0 | - | 4.99 | 132,093 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,047 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,111 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,559 |
| European Coastal Capitals | 0 | - | 4.95 | 89,692 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,160 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,557 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,646 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,396 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,071 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,013 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,710 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,601 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,364 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,057 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,123 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,666 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,674 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,399 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,731 |
| Monarchies of Europe | 0 | - | 4.90 | 97,259 |
| Monarchies of Asia | 0 | - | 4.97 | 70,564 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,409 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,367 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,995 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,363 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,638 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,837 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,341 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,434 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,749 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,158 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,328 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,188 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,037 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,199 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,069 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,471 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,196 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,411 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,965 |
| Countries with Megacities | 0 | - | 4.99 | 246,446 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,880 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,778 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,342 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,736 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,671 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,869 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,607 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,556 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,530 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,317 |
| Countries by Capital City | 0 | - | 5.00 | 66,544 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,269 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,855 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,154 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,371 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,139 |
| Moved Capital Cities | 0 | - | 4.96 | 73,545 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,465 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,369 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,060 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,145 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,094 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,917 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,071 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,766 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,794 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,802 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,433 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,532 |
| North American Sports Cities | 0 | - | 4.83 | 170,817 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,902 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,806 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 71,992 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,674 |
| Cities by Former Name | 0 | - | 4.84 | 90,915 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,660 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,215 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,787 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,780 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,853 |
| World Capitals by Map | 0 | - | 5.00 | 283,002 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,622 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,096 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,227 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,588 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,773 |
| Random Country to Capital | 0 | - | 4.98 | 911,051 |
| Capitals Starting With H | 0 | - | 4.90 | 90,338 |
| Capitals Starting With K | 0 | - | 4.85 | 75,624 |
| Capitals Starting With L | 0 | - | 4.81 | 86,752 |
| Capitals Starting With M | 0 | - | 4.93 | 105,950 |
| Capitals Starting With P | 0 | - | 4.88 | 77,122 |
| Capitals Starting With R | 0 | - | 4.87 | 80,912 |
| Capitals Starting With S | 0 | - | 4.89 | 84,737 |
| Capitals Starting With T | 0 | - | 4.84 | 75,236 |
| Capitals Starting With W | 0 | - | 4.89 | 90,552 |
| Capitals Starting With A | 0 | - | 4.97 | 126,456 |
| Capitals Starting With B | 0 | - | 4.89 | 117,206 |
| Capitals Starting With D | 0 | - | 4.93 | 95,301 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,469 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,849 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,848 |
| Olympic Host Countries | 0 | - | 4.98 | 198,814 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,765 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,431 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 303,121 |
| The Only European Country ... | 0 | - | 4.91 | 213,638 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,978 |
| Hindu Countries | 0 | - | 4.85 | 49,501 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,422 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,165 |
| Countries of Africa | 0 | - | 5.00 | 2,505,967 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,266 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,265 |
| Australia A-Z | 0 | - | 4.54 | 49,772 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,869 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,120 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,107 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,233 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,831 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,343 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,518 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,462 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,376 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,221 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,204 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,555 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,520 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,754 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,149 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,138 |
| Southernmost Major Cities | 0 | - | 4.44 | 51,077 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,562 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 77,261 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,014 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,285 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,294 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,134 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,983 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,721 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,597 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,294 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,060 |
| Former Capitals | 0 | - | 4.88 | 71,114 |
| Capital Cities Chain | 0 | - | 4.84 | 81,866 |
| Coldest World Capitals | 0 | - | 4.95 | 133,015 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,732 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,940 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,138 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,221 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,351 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,171 |
| Countries of the Middle East | 0 | - | 4.96 | 198,794 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,199 |
| Slavic Countries | 0 | - | 4.96 | 110,807 |
| African Island Countries | 0 | - | 4.96 | 100,715 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,472 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,859 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,241 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 44,913 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,056 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,023 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,008 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,636 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,417 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,996 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,726 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,540 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,645 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,710 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,128 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,117 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,242 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,514 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,196 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,353 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,177 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,459 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,965 |
