| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,250 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,650 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,090 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,986 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,629 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,183 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,003 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,930 |
| Random European Capital to Country | 0 | - | 4.98 | 189,160 |
| Random European Country to Capital | 0 | - | 4.92 | 147,406 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,343 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,376 |
| Random African Capital to Country | 0 | - | 4.97 | 99,713 |
| Random African Country to Capital | 0 | - | 4.94 | 70,223 |
| World Capitals Quiz | 0 | - | 5.00 | 5,029,905 |
| Europe Capital to Country | 0 | - | 4.99 | 247,520 |
| Asia Capital to Country | 0 | - | 4.96 | 125,713 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,406 |
| European Capitals by Map | 0 | - | 4.99 | 136,185 |
| African Capitals by Map | 0 | - | 4.99 | 132,118 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,102 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,152 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,582 |
| European Coastal Capitals | 0 | - | 4.95 | 89,716 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,173 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,697 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,704 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,409 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,085 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,123 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,783 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,635 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,389 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,085 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,157 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,685 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,688 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,418 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,746 |
| Monarchies of Europe | 0 | - | 4.90 | 97,290 |
| Monarchies of Asia | 0 | - | 4.97 | 70,587 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,422 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,568 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,500 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,389 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,653 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,879 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,379 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,479 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,797 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,201 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,343 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,213 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,058 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,216 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,094 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,482 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,620 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,512 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,039 |
| Countries with Megacities | 0 | - | 4.99 | 246,608 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,964 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,830 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,403 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,772 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,715 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,899 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,622 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,578 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,569 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,377 |
| Countries by Capital City | 0 | - | 5.00 | 66,579 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,302 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,880 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,271 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,396 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,149 |
| Moved Capital Cities | 0 | - | 4.96 | 73,561 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,516 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,413 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,081 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,157 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,114 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,924 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,093 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,789 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,848 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,835 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,451 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,555 |
| North American Sports Cities | 0 | - | 4.83 | 170,861 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,908 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,881 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,051 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,702 |
| Cities by Former Name | 0 | - | 4.84 | 90,943 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,673 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,224 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,793 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,782 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,893 |
| World Capitals by Map | 0 | - | 5.00 | 283,109 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,643 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,572 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,253 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,610 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,804 |
| Random Country to Capital | 0 | - | 4.98 | 911,383 |
| Capitals Starting With H | 0 | - | 4.90 | 90,699 |
| Capitals Starting With K | 0 | - | 4.85 | 75,657 |
| Capitals Starting With L | 0 | - | 4.81 | 86,801 |
| Capitals Starting With M | 0 | - | 4.93 | 106,010 |
| Capitals Starting With P | 0 | - | 4.88 | 77,160 |
| Capitals Starting With R | 0 | - | 4.87 | 80,949 |
| Capitals Starting With S | 0 | - | 4.89 | 84,781 |
| Capitals Starting With T | 0 | - | 4.84 | 75,270 |
| Capitals Starting With W | 0 | - | 4.89 | 90,589 |
| Capitals Starting With A | 0 | - | 4.97 | 126,511 |
| Capitals Starting With B | 0 | - | 4.89 | 117,256 |
| Capitals Starting With D | 0 | - | 4.93 | 95,354 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,513 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,875 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,915 |
| Olympic Host Countries | 0 | - | 4.98 | 198,846 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,787 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,488 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 303,309 |
| The Only European Country ... | 0 | - | 4.91 | 213,738 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,061 |
| Hindu Countries | 0 | - | 4.85 | 49,545 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,472 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,187 |
| Countries of Africa | 0 | - | 5.00 | 2,506,867 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,319 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,311 |
| Australia A-Z | 0 | - | 4.54 | 49,778 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,960 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,169 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,121 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,275 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,878 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,366 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,548 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,509 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,415 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,255 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,235 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,576 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,538 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,778 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,179 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,142 |
| Southernmost Major Cities | 0 | - | 4.44 | 51,086 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,567 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 77,398 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,019 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,298 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,321 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,162 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,064 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,769 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,650 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,314 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,126 |
| Former Capitals | 0 | - | 4.88 | 71,129 |
| Capital Cities Chain | 0 | - | 4.84 | 81,896 |
| Coldest World Capitals | 0 | - | 4.95 | 133,034 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,769 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,965 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,171 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,476 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,404 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,251 |
| Countries of the Middle East | 0 | - | 4.96 | 198,852 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,222 |
| Slavic Countries | 0 | - | 4.96 | 110,827 |
| African Island Countries | 0 | - | 4.96 | 100,755 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,486 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,889 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,311 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 44,964 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,084 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,053 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,310 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,676 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,455 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,052 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,753 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,583 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,679 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,735 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,136 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,143 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,258 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,541 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,229 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,377 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,207 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,485 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,968 |
