| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,139 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,606 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,025 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,313 |
| Asia Capitals Quiz | 0 | - | 4.98 | 684,776 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,149 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,945 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,790 |
| Random European Capital to Country | 0 | - | 4.98 | 189,045 |
| Random European Country to Capital | 0 | - | 4.92 | 147,328 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,262 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,324 |
| Random African Capital to Country | 0 | - | 4.97 | 99,669 |
| Random African Country to Capital | 0 | - | 4.94 | 70,148 |
| World Capitals Quiz | 0 | - | 5.00 | 5,025,290 |
| Europe Capital to Country | 0 | - | 4.99 | 247,268 |
| Asia Capital to Country | 0 | - | 4.96 | 125,616 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,273 |
| European Capitals by Map | 0 | - | 4.99 | 135,906 |
| African Capitals by Map | 0 | - | 4.99 | 132,037 |
| Asian Capitals by Map | 0 | - | 4.98 | 60,952 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,063 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,519 |
| European Coastal Capitals | 0 | - | 4.95 | 89,630 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,141 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,345 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,513 |
| 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 | 476,746 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,463 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,526 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,324 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,001 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,070 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,639 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,650 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,362 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,697 |
| Monarchies of Europe | 0 | - | 4.90 | 97,198 |
| Monarchies of Asia | 0 | - | 4.97 | 70,532 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,376 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,980 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,568,815 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,302 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,603 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,777 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,292 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,345 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,669 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,075 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,283 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,147 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 90,997 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,160 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,017 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,445 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,420 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,002 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,852 |
| Countries with Megacities | 0 | - | 4.99 | 246,154 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,771 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,727 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,236 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,664 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,567 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,805 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,560 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,508 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,474 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,204 |
| Countries by Capital City | 0 | - | 5.00 | 66,449 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,220 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,805 |
| World Capitals by Proximity | 0 | - | 4.91 | 327,927 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,333 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,124 |
| Moved Capital Cities | 0 | - | 4.96 | 73,506 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,367 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,292 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,038 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,123 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,033 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,883 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,040 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,716 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,672 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,742 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,392 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,480 |
| North American Sports Cities | 0 | - | 4.83 | 170,741 |
| Summer Olympic City Bids | 0 | - | 4.93 | 41,878 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,680 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 71,930 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,633 |
| Cities by Former Name | 0 | - | 4.84 | 90,862 |
| Capitals in their Native Languages | 0 | - | 4.95 | 132,634 |
| Nearest Capital City #1 | 0 | - | 4.84 | 57,185 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,771 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,769 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 67,763 |
| World Capitals by Map | 0 | - | 5.00 | 282,790 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,597 |
| Random Capital to Country | 0 | - | 4.99 | 2,576,096 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,203 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,575 |
| Random European Capitals on a Map | 0 | - | 4.97 | 133,736 |
| Random Country to Capital | 0 | - | 4.98 | 910,432 |
| Capitals Starting With H | 0 | - | 4.90 | 88,299 |
| Capitals Starting With K | 0 | - | 4.85 | 75,451 |
| Capitals Starting With M | 0 | - | 4.93 | 105,737 |
| Capitals Starting With P | 0 | - | 4.88 | 76,977 |
| Capitals Starting With R | 0 | - | 4.87 | 80,777 |
| Capitals Starting With S | 0 | - | 4.89 | 84,581 |
| Capitals Starting With T | 0 | - | 4.84 | 75,115 |
| Capitals Starting With W | 0 | - | 4.89 | 90,440 |
| Capitals Starting With A | 0 | - | 4.97 | 126,248 |
| Capitals Starting With B | 0 | - | 4.89 | 117,012 |
| Capitals Starting With D | 0 | - | 4.93 | 95,102 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,428 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,818 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,709 |
| Olympic Host Countries | 0 | - | 4.98 | 198,742 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,704 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,323 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 302,680 |
| The Only European Country ... | 0 | - | 4.91 | 213,463 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,812 |
| Hindu Countries | 0 | - | 4.85 | 49,440 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,305 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,150 |
| Countries of Africa | 0 | - | 5.00 | 2,504,083 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,209 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,205 |
| Australia A-Z | 0 | - | 4.54 | 49,764 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,672 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,029 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,082 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,150 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,745 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,280 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,464 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,389 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,288 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,137 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,176 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,498 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,476 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,710 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,088 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,135 |
| Southernmost Major Cities | 0 | - | 4.44 | 51,052 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,538 |
| European Cities A-Z by Clue #1 | 0 | - | 4.26 | 76,865 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,010 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,257 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,236 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,080 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 212,851 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,638 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,488 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,263 |
| U.S. Cities With Spanish Names | 0 | - | 4.93 | 21,935 |
| Former Capitals | 0 | - | 4.88 | 71,076 |
| Capital Cities Chain | 0 | - | 4.84 | 81,796 |
| Coldest World Capitals | 0 | - | 4.95 | 132,979 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 76,684 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,857 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,088 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,509 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,235 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,018 |
| Countries of the Middle East | 0 | - | 4.96 | 198,688 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,131 |
| Slavic Countries | 0 | - | 4.96 | 110,766 |
| African Island Countries | 0 | - | 4.96 | 100,645 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,452 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,791 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,156 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 44,793 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 163,985 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 168,952 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,321 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,578 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,352 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,903 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,643 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,462 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,572 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,669 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,103 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,064 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,184 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,457 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,145 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,315 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,126 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,414 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,950 |
| India A-Z | 0 | - | 4.42 | 33,894 |
