| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,191 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,630 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,053 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,724 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,195 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,163 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,978 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,871 |
| Random European Capital to Country | 0 | - | 4.98 | 189,109 |
| Random European Country to Capital | 0 | - | 4.92 | 147,371 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,306 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,348 |
| Random African Capital to Country | 0 | - | 4.97 | 99,690 |
| Random African Country to Capital | 0 | - | 4.94 | 70,166 |
| World Capitals Quiz | 0 | - | 5.00 | 5,028,047 |
| Europe Capital to Country | 0 | - | 4.99 | 247,384 |
| Asia Capital to Country | 0 | - | 4.96 | 125,669 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,354 |
| European Capitals by Map | 0 | - | 4.99 | 136,071 |
| African Capitals by Map | 0 | - | 4.99 | 132,090 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,036 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,104 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,555 |
| European Coastal Capitals | 0 | - | 4.95 | 89,687 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,159 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,516 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,637 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,391 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,067 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,989 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,670 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,592 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,362 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,051 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,113 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,662 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,670 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,395 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,727 |
| Monarchies of Europe | 0 | - | 4.90 | 97,251 |
| Monarchies of Asia | 0 | - | 4.97 | 70,559 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,403 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,328 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,851 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,350 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,635 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,830 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,332 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,418 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,740 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,152 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,325 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,188 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,030 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,191 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,064 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,468 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,103 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,388 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,953 |
| Countries with Megacities | 0 | - | 4.99 | 246,395 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,865 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,775 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,321 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,726 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,660 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,863 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,601 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,552 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,518 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,300 |
| Countries by Capital City | 0 | - | 5.00 | 66,527 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,262 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,849 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,132 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,362 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,137 |
| Moved Capital Cities | 0 | - | 4.96 | 73,544 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,453 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,355 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,058 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,142 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,087 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,912 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,063 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,758 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,776 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,793 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,427 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,529 |
| North American Sports Cities | 0 | - | 4.83 | 170,805 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,900 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,779 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 71,981 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,670 |
| Cities by Former Name | 0 | - | 4.84 | 90,904 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,658 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,212 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,786 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,779 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,845 |
| World Capitals by Map | 0 | - | 5.00 | 282,984 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,619 |
| Random Capital to Country | 0 | - | 4.99 | 2,576,973 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,222 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,587 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,768 |
| Random Country to Capital | 0 | - | 4.98 | 910,981 |
| Capitals Starting With H | 0 | - | 4.90 | 90,198 |
| Capitals Starting With K | 0 | - | 4.85 | 75,613 |
| Capitals Starting With L | 0 | - | 4.81 | 86,741 |
| Capitals Starting With M | 0 | - | 4.93 | 105,933 |
| Capitals Starting With P | 0 | - | 4.88 | 77,109 |
| Capitals Starting With R | 0 | - | 4.87 | 80,902 |
| Capitals Starting With S | 0 | - | 4.89 | 84,726 |
| Capitals Starting With T | 0 | - | 4.84 | 75,228 |
| Capitals Starting With W | 0 | - | 4.89 | 90,547 |
| Capitals Starting With A | 0 | - | 4.97 | 126,433 |
| Capitals Starting With B | 0 | - | 4.89 | 117,192 |
| Capitals Starting With D | 0 | - | 4.93 | 95,281 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,465 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,841 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,826 |
| Olympic Host Countries | 0 | - | 4.98 | 198,807 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,757 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,417 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 303,065 |
| The Only European Country ... | 0 | - | 4.91 | 213,617 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,954 |
| Hindu Countries | 0 | - | 4.85 | 49,486 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,400 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,165 |
| Countries of Africa | 0 | - | 5.00 | 2,505,778 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,255 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,256 |
| Australia A-Z | 0 | - | 4.54 | 49,771 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,841 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,110 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,102 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,219 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,818 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,334 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,510 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,454 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,369 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,216 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,201 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,551 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,517 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,745 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,146 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,138 |
| Southernmost Major Cities | 0 | - | 4.44 | 51,075 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,554 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 77,222 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,012 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,284 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,285 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,132 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,965 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,705 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,578 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,289 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,038 |
| Former Capitals | 0 | - | 4.88 | 71,107 |
| Capital Cities Chain | 0 | - | 4.84 | 81,857 |
| Coldest World Capitals | 0 | - | 4.95 | 133,010 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,728 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,924 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,126 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,031 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,338 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,157 |
| Countries of the Middle East | 0 | - | 4.96 | 198,782 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,189 |
| Slavic Countries | 0 | - | 4.96 | 110,800 |
| African Island Countries | 0 | - | 4.96 | 100,702 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,468 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,851 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,234 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 44,895 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,046 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,014 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,901 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,626 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,407 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,981 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,719 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,535 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,630 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,703 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,126 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,114 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,233 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,504 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,186 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,345 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,164 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,455 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,965 |
