| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,803 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 228,165 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,698 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,585 |
| Africa Capitals Quiz | 0 | - | 4.99 | 745,157 |
| Asia Capitals Quiz | 0 | - | 4.98 | 700,039 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,941 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,169 |
| Random European Capital to Country | 0 | - | 4.98 | 192,363 |
| Random European Country to Capital | 0 | - | 4.93 | 166,090 |
| Random Asian Country to Capital | 0 | - | 4.92 | 97,094 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,591 |
| Random African Capital to Country | 0 | - | 4.97 | 101,496 |
| Random African Country to Capital | 0 | - | 4.94 | 71,898 |
| World Capitals Quiz | 0 | - | 5.00 | 5,114,558 |
| Europe Capital to Country | 0 | - | 4.99 | 252,611 |
| Asia Capital to Country | 0 | - | 4.96 | 127,702 |
| EU Capitals with No Hints | 0 | - | 4.96 | 147,309 |
| European Capitals by Map | 0 | - | 4.99 | 142,575 |
| African Capitals by Map | 0 | - | 4.99 | 142,620 |
| Asian Capitals by Map | 0 | - | 4.98 | 64,127 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 93,142 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,404 |
| European Coastal Capitals | 0 | - | 4.95 | 91,505 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,272 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,346 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 226,578 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,257 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,491 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,668 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,673 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,376 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,730 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,346 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,501 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,672 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,562 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 62,072 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,827 |
| Monarchies of Europe | 0 | - | 4.90 | 99,043 |
| Monarchies of Asia | 0 | - | 4.97 | 71,614 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,359 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,711 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,602,507 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,801 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 134,515 |
| Name a Valid European Capital | 0 | - | 4.95 | 153,989 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,984 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,492 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,754 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,952 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,078 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,955 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,817 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,212 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,024 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,530 |
| Countries with Megacities | 0 | - | 4.99 | 267,933 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,185 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,351 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,509 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,457 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,533 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,570 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,089 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,360 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,454 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,407 |
| Countries by Capital City | 0 | - | 5.00 | 69,648 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,178 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,367 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,489 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,971 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,541 |
| Moved Capital Cities | 0 | - | 4.96 | 74,741 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,808 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,602 |
| Name a World Capital A-Z | 0 | - | 5.00 | 177,328 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,688 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,141 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,431 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,425 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,479 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,542 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,832 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,003 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,376 |
| North American Sports Cities | 0 | - | 4.82 | 173,308 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,605 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 107,211 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,618 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 103,068 |
| Cities by Former Name | 0 | - | 4.83 | 92,191 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,988 |
| Nearest Capital City #1 | 0 | - | 4.83 | 58,050 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,206 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 66,056 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,979 |
| World Capitals by Map | 0 | - | 5.00 | 290,002 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,939 |
| Random Capital to Country | 0 | - | 4.99 | 2,604,402 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,331 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,444 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,573 |
| Random Country to Capital | 0 | - | 4.98 | 930,194 |
| Capitals Starting With H | 0 | - | 4.91 | 93,459 |
| Capitals Starting With K | 0 | - | 4.89 | 84,521 |
| Capitals Starting With L | 0 | - | 4.81 | 96,103 |
| Capitals Starting With M | 0 | - | 4.94 | 109,388 |
| Capitals Starting With P | 0 | - | 4.88 | 79,128 |
| Capitals Starting With R | 0 | - | 4.89 | 82,614 |
| Capitals Starting With S | 0 | - | 4.90 | 86,701 |
| Capitals Starting With T | 0 | - | 4.86 | 76,949 |
| Capitals Starting With W | 0 | - | 4.87 | 91,799 |
| Capitals Starting With A | 0 | - | 4.97 | 129,290 |
| Capitals Starting With B | 0 | - | 4.89 | 119,661 |
| Capitals Starting With D | 0 | - | 4.94 | 97,322 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,841 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,383 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,252 |
| Olympic Host Countries | 0 | - | 4.98 | 202,239 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,260 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,500 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 315,151 |
| The Only European Country ... | 0 | - | 4.91 | 219,604 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,358 |
| Hindu Countries | 0 | - | 4.86 | 50,673 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,841 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,993 |
| Countries of Africa | 0 | - | 5.00 | 2,564,876 |
| Single Vowel Capitals | 0 | - | 4.83 | 14,768 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 151,378 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,676 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,282 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,665 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,630 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,978 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,587 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,872 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,906 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 91,062 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,885 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,041 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,026 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,617 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,285 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,575 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,931 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,876 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,344 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,794 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 73,155 |
| Cities with the Most Foreign Embassies | 0 | - | 4.69 | 47,241 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,835 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,691 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 47,079 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,823 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 76,367 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,831 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,703 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,999 |
| Former Capitals | 0 | - | 4.88 | 71,733 |
| Capital Cities Chain | 0 | - | 4.84 | 83,531 |
| Solve the Secret Capital City | 0 | - | 4.80 | 164,742 |
| Coldest World Capitals | 0 | - | 4.95 | 134,296 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,262 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,737 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,996 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,270 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,957 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,289 |
| Countries of the Middle East | 0 | - | 4.96 | 203,280 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,373 |
| Slavic Countries | 0 | - | 4.96 | 112,515 |
| African Island Countries | 0 | - | 4.96 | 102,746 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,248 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,358 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 53,666 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,831 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 171,319 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,372 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 128,032 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,491 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,976 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 145,385 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,176 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,787 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,731 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,083 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,977 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,538 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 118,067 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,709 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 100,082 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,329 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.95 | 47,589 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,830 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,938 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,188 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,605 |
