| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,126 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,603 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,024 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,284 |
| Asia Capitals Quiz | 0 | - | 4.98 | 684,729 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,145 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,945 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,781 |
| Random European Capital to Country | 0 | - | 4.98 | 189,041 |
| Random European Country to Capital | 0 | - | 4.92 | 147,322 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,261 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,321 |
| Random African Capital to Country | 0 | - | 4.97 | 99,667 |
| Random African Country to Capital | 0 | - | 4.94 | 70,148 |
| World Capitals Quiz | 0 | - | 5.00 | 5,025,091 |
| Europe Capital to Country | 0 | - | 4.99 | 247,258 |
| Asia Capital to Country | 0 | - | 4.96 | 125,602 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,263 |
| European Capitals by Map | 0 | - | 4.99 | 135,893 |
| African Capitals by Map | 0 | - | 4.99 | 132,033 |
| Asian Capitals by Map | 0 | - | 4.98 | 60,948 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,060 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,518 |
| European Coastal Capitals | 0 | - | 4.95 | 89,628 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,140 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,324 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,506 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,368 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,032 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,734 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,455 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,523 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,324 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 117,999 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,068 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,639 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,649 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,361 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,691 |
| Monarchies of Europe | 0 | - | 4.90 | 97,193 |
| Monarchies of Asia | 0 | - | 4.97 | 70,529 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,375 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,965 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,568,741 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,300 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,600 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,775 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,287 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,343 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,662 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,068 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,281 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,142 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 90,992 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,158 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,011 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,443 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,377 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 376,978 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,849 |
| Countries with Megacities | 0 | - | 4.99 | 246,132 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,761 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,726 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,228 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,661 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,560 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,803 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,556 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,505 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,471 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,197 |
| Countries by Capital City | 0 | - | 5.00 | 66,441 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,217 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,799 |
| World Capitals by Proximity | 0 | - | 4.91 | 327,912 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,329 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,123 |
| Moved Capital Cities | 0 | - | 4.96 | 73,503 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,363 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,291 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,036 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,122 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,029 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,882 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,035 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,713 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,659 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,740 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,389 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,477 |
| North American Sports Cities | 0 | - | 4.83 | 170,739 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,877 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,675 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 71,929 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,630 |
| Cities by Former Name | 0 | - | 4.84 | 90,858 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,629 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,182 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,768 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,769 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,758 |
| World Capitals by Map | 0 | - | 5.00 | 282,776 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,594 |
| Random Capital to Country | 0 | - | 4.99 | 2,576,028 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,203 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,573 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,736 |
| Random Country to Capital | 0 | - | 4.98 | 910,387 |
| Capitals Starting With H | 0 | - | 4.90 | 88,022 |
| Capitals Starting With K | 0 | - | 4.85 | 75,436 |
| Capitals Starting With M | 0 | - | 4.93 | 105,712 |
| Capitals Starting With P | 0 | - | 4.88 | 76,959 |
| Capitals Starting With R | 0 | - | 4.87 | 80,764 |
| Capitals Starting With S | 0 | - | 4.89 | 84,562 |
| Capitals Starting With T | 0 | - | 4.84 | 75,103 |
| Capitals Starting With W | 0 | - | 4.89 | 90,427 |
| Capitals Starting With A | 0 | - | 4.97 | 126,217 |
| Capitals Starting With B | 0 | - | 4.89 | 116,991 |
| Capitals Starting With D | 0 | - | 4.93 | 95,081 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,425 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,818 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,698 |
| Olympic Host Countries | 0 | - | 4.98 | 198,733 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,696 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,316 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 302,654 |
| The Only European Country ... | 0 | - | 4.91 | 213,450 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,807 |
| Hindu Countries | 0 | - | 4.85 | 49,439 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,300 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,150 |
| Countries of Africa | 0 | - | 5.00 | 2,503,976 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,206 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,204 |
| Australia A-Z | 0 | - | 4.54 | 49,764 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,658 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,025 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,081 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,146 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,739 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,274 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,459 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,380 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,282 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,131 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,174 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,494 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,476 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,707 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,082 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,135 |
| Southernmost Major Cities | 0 | - | 4.44 | 51,050 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,537 |
| European Cities A-Z by Clue #1 | 0 | - | 4.26 | 76,821 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,009 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,255 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,233 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,076 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,840 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,633 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,481 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,262 |
| U.S. Cities With Spanish Names | 0 | - | 4.93 | 21,926 |
| Former Capitals | 0 | - | 4.88 | 71,073 |
| Capital Cities Chain | 0 | - | 4.84 | 81,793 |
| Coldest World Capitals | 0 | - | 4.95 | 132,977 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,679 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,854 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,087 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,487 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,231 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,009 |
| Countries of the Middle East | 0 | - | 4.96 | 198,680 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,126 |
| Slavic Countries | 0 | - | 4.96 | 110,763 |
| African Island Countries | 0 | - | 4.96 | 100,640 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,452 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,787 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,151 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 44,785 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 163,984 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 168,948 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,257 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,571 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,344 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,890 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,635 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,455 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,571 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,664 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,100 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,064 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,180 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,452 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,138 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,312 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,123 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,412 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,949 |
| India A-Z | 0 | - | 4.42 | 33,892 |
