| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,199 |
| 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 | 729,766 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,258 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,165 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,981 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,883 |
| Random European Capital to Country | 0 | - | 4.98 | 189,116 |
| Random European Country to Capital | 0 | - | 4.92 | 147,378 |
| 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 | 99,695 |
| Random African Country to Capital | 0 | - | 4.94 | 70,169 |
| World Capitals Quiz | 0 | - | 5.00 | 5,028,347 |
| Europe Capital to Country | 0 | - | 4.99 | 247,393 |
| Asia Capital to Country | 0 | - | 4.96 | 125,679 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,364 |
| European Capitals by Map | 0 | - | 4.99 | 136,088 |
| African Capitals by Map | 0 | - | 4.99 | 132,093 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,041 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,110 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,558 |
| European Coastal Capitals | 0 | - | 4.95 | 89,691 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,160 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,539 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,646 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,395 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,070 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,009 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,701 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,597 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,364 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,055 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,122 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,666 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,673 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,397 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,731 |
| Monarchies of Europe | 0 | - | 4.90 | 97,255 |
| Monarchies of Asia | 0 | - | 4.97 | 70,563 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,409 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,359 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,967 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,360 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,638 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,835 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,338 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,432 |
| 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 | 91,035 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,199 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,068 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,471 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,179 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,406 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,962 |
| Countries with Megacities | 0 | - | 4.99 | 246,427 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,877 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,776 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,342 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,734 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,671 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,868 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,607 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,555 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,529 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,316 |
| Countries by Capital City | 0 | - | 5.00 | 66,542 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,267 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,853 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,146 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,369 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,137 |
| Moved Capital Cities | 0 | - | 4.96 | 73,545 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,462 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,360 |
| 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 | 148,093 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,917 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,069 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,765 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,791 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,801 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,431 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,531 |
| North American Sports Cities | 0 | - | 4.83 | 170,814 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,901 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,799 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 71,991 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,672 |
| Cities by Former Name | 0 | - | 4.84 | 90,915 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,659 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,214 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,787 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,779 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,852 |
| World Capitals by Map | 0 | - | 5.00 | 282,999 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,621 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,072 |
| 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 | 911,032 |
| Capitals Starting With H | 0 | - | 4.90 | 90,315 |
| Capitals Starting With K | 0 | - | 4.85 | 75,621 |
| Capitals Starting With L | 0 | - | 4.81 | 86,751 |
| Capitals Starting With M | 0 | - | 4.93 | 105,948 |
| Capitals Starting With P | 0 | - | 4.88 | 77,120 |
| Capitals Starting With R | 0 | - | 4.87 | 80,911 |
| Capitals Starting With S | 0 | - | 4.89 | 84,736 |
| Capitals Starting With T | 0 | - | 4.84 | 75,236 |
| Capitals Starting With W | 0 | - | 4.89 | 90,551 |
| Capitals Starting With A | 0 | - | 4.97 | 126,452 |
| Capitals Starting With B | 0 | - | 4.89 | 117,205 |
| Capitals Starting With D | 0 | - | 4.93 | 95,299 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,468 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,849 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,843 |
| Olympic Host Countries | 0 | - | 4.98 | 198,813 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,764 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,429 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 303,111 |
| The Only European Country ... | 0 | - | 4.91 | 213,636 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,973 |
| Hindu Countries | 0 | - | 4.85 | 49,498 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,418 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,165 |
| Countries of Africa | 0 | - | 5.00 | 2,505,930 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,264 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,262 |
| Australia A-Z | 0 | - | 4.54 | 49,772 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,866 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,119 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,105 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,231 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,829 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,342 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,515 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,461 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,375 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,219 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,203 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,555 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,519 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,753 |
| 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 | 72,559 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 77,255 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,013 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,285 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,290 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,134 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,979 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,719 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,590 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,292 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,052 |
| Former Capitals | 0 | - | 4.88 | 71,114 |
| Capital Cities Chain | 0 | - | 4.84 | 81,865 |
| Coldest World Capitals | 0 | - | 4.95 | 133,013 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,731 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,937 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,135 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,172 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,348 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,169 |
| Countries of the Middle East | 0 | - | 4.96 | 198,792 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,198 |
| Slavic Countries | 0 | - | 4.96 | 110,805 |
| African Island Countries | 0 | - | 4.96 | 100,712 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,471 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,857 |
| 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 | 44,908 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,053 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,022 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,987 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,635 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,413 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,995 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,724 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,539 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,642 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,710 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,127 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,117 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,240 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,514 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,195 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,352 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,175 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,459 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,965 |
