| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,941 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,959 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,491 |
| Africa Capitals Quiz | 0 | - | 4.99 | 734,289 |
| Asia Capitals Quiz | 0 | - | 4.98 | 689,738 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,389 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,420 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,592 |
| Random European Capital to Country | 0 | - | 4.98 | 190,259 |
| Random European Country to Capital | 0 | - | 4.93 | 161,454 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,949 |
| Random Asian Capital to Country | 0 | - | 4.97 | 102,057 |
| Random African Capital to Country | 0 | - | 4.97 | 100,247 |
| Random African Country to Capital | 0 | - | 4.94 | 70,837 |
| World Capitals Quiz | 0 | - | 5.00 | 5,054,429 |
| Europe Capital to Country | 0 | - | 4.99 | 249,119 |
| Asia Capital to Country | 0 | - | 4.96 | 126,255 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,305 |
| European Capitals by Map | 0 | - | 4.99 | 138,027 |
| African Capitals by Map | 0 | - | 4.99 | 132,979 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,827 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,699 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,070 |
| European Coastal Capitals | 0 | - | 4.95 | 90,199 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,389 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,507 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,103 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,639 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,424 |
| South America Capitals Quiz | 0 | - | 5.00 | 479,585 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,487 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 62,076 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,770 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,766 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,575 |
| European Capitals Furthest from the Sea | 0 | - | 4.91 | 81,972 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,952 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,911 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,059 |
| Monarchies of Europe | 0 | - | 4.90 | 97,771 |
| Monarchies of Asia | 0 | - | 4.97 | 70,878 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,691 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,585 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,579,395 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,853 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,005 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,442 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,794 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,237 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,790 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,250 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,852 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 120,189 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,537 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,708 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,584 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,723 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,959 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,118 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,501 |
| Countries with Megacities | 0 | - | 4.99 | 249,448 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,351 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,675 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,683 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,644 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,582 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,697 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,108 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,138 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,696 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,306 |
| Countries by Capital City | 0 | - | 5.00 | 67,621 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,823 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,316 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,021 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,775 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,261 |
| Moved Capital Cities | 0 | - | 4.96 | 73,936 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,479 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,005 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 82,421 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,598 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,896 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,151 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,470 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,360 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,053 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,438 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,137 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,179 |
| North American Sports Cities | 0 | - | 4.83 | 171,532 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,078 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,556 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,491 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,104 |
| Cities by Former Name | 0 | - | 4.84 | 91,316 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,254 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,483 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,924 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,859 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,640 |
| World Capitals by Map | 0 | - | 5.00 | 285,046 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,024 |
| Random Capital to Country | 0 | - | 4.99 | 2,585,414 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,556 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,836 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,320 |
| Random Country to Capital | 0 | - | 4.98 | 916,061 |
| Capitals Starting With H | 0 | - | 4.90 | 91,798 |
| Capitals Starting With K | 0 | - | 4.85 | 75,993 |
| Capitals Starting With L | 0 | - | 4.81 | 87,208 |
| Capitals Starting With M | 0 | - | 4.93 | 106,675 |
| Capitals Starting With P | 0 | - | 4.88 | 77,500 |
| Capitals Starting With R | 0 | - | 4.87 | 81,277 |
| Capitals Starting With S | 0 | - | 4.89 | 85,129 |
| Capitals Starting With T | 0 | - | 4.84 | 75,610 |
| Capitals Starting With W | 0 | - | 4.87 | 90,896 |
| Capitals Starting With A | 0 | - | 4.97 | 127,035 |
| Capitals Starting With B | 0 | - | 4.89 | 117,699 |
| Capitals Starting With D | 0 | - | 4.93 | 95,776 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,898 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,023 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,142 |
| Olympic Host Countries | 0 | - | 4.98 | 199,800 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,373 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,477 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 306,684 |
| The Only European Country ... | 0 | - | 4.91 | 215,430 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,311 |
| Hindu Countries | 0 | - | 4.86 | 49,888 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,476 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,506 |
| Countries of Africa | 0 | - | 5.00 | 2,524,107 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,222 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,714 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,434 |
| Australia A-Z | 0 | - | 4.54 | 49,894 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,554 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,067 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,381 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,972 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,494 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,813 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,972 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,431 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,141 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,916 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 75,922 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 91,155 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,029 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,298 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,895 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,206 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,168 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 72,754 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 78,454 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,094 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,453 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,199 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,617 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,128 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 74,586 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,195 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,588 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,798 |
| Former Capitals | 0 | - | 4.88 | 71,314 |
| Capital Cities Chain | 0 | - | 4.84 | 82,321 |
| Coldest World Capitals | 0 | - | 4.95 | 133,255 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,235 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,421 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,489 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,702 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,324,283 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,457 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,673 |
| Countries of the Middle East | 0 | - | 4.96 | 200,070 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,829 |
| Slavic Countries | 0 | - | 4.96 | 111,332 |
| African Island Countries | 0 | - | 4.96 | 101,247 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,719 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,623 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,484 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.83 | 45,992 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,592 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,686 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,018,334 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,426 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,074 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,867 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,414 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,362 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,243 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,315 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,442 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,593 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,781 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,989 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,787 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,803 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,652 |
