| Five Most Inland Capital Cities by Continent | 0 | - | 4.90 | 12,349 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 226,286 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,723 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,889 |
| Asia Capitals Quiz | 0 | - | 4.98 | 691,003 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,547 |
| Random European Capital to Country | 0 | - | 4.98 | 190,628 |
| Random European Country to Capital | 0 | - | 4.93 | 164,609 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,217 |
| Random Asian Capital to Country | 0 | - | 4.97 | 102,597 |
| Random African Capital to Country | 0 | - | 4.97 | 100,486 |
| Random African Country to Capital | 0 | - | 4.94 | 71,097 |
| World Capitals Quiz | 0 | - | 5.00 | 5,063,143 |
| Europe Capital to Country | 0 | - | 4.99 | 249,570 |
| Asia Capital to Country | 0 | - | 4.96 | 126,472 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,582 |
| European Capitals by Map | 0 | - | 4.99 | 138,582 |
| African Capitals by Map | 0 | - | 4.99 | 133,365 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,072 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,876 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,236 |
| European Coastal Capitals | 0 | - | 4.95 | 90,389 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,502 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,161 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,555 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,740 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,869 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,708 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,437 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,085 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 62,246 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,890 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,986 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,693 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,077 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,092 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,165 |
| Capitals of the Stans | 0 | - | 4.95 | 26,740 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,990 |
| Countries with Megacities | 0 | - | 4.99 | 259,137 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,860 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,974 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,145 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,975 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,843 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,901 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,957 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,238 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,266 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,964 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,621 |
| Countries by Capital City | 0 | - | 5.00 | 67,913 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,969 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,459 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,963 |
| Moved Capital Cities | 0 | - | 4.96 | 74,055 |
| Name a Valid European Capital | 0 | - | 4.95 | 152,070 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,403 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,049 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,928 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,121 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,690 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,626 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,204 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,444 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,549 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,405 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,671 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,258 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,364 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,921 |
| North American Sports Cities | 0 | - | 4.83 | 171,752 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,243 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,248 |
| Name a City - European Countries | 0 | - | 4.90 | 65,193 |
| Name a Valid World City | 0 | - | 4.83 | 70,938 |
| Cities by Former Name | 0 | - | 4.83 | 91,421 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,325 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,575 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,885 |
| World Capitals by Map | 0 | - | 5.00 | 285,600 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,155 |
| Random Capital to Country | 0 | - | 4.99 | 2,588,023 |
| Random Country to Capital | 0 | - | 4.98 | 918,314 |
| Capitals Starting With H | 0 | - | 4.91 | 92,139 |
| Capitals Starting With K | 0 | - | 4.87 | 80,760 |
| Capitals Starting With L | 0 | - | 4.81 | 87,620 |
| Capitals Starting With M | 0 | - | 4.93 | 107,193 |
| Capitals Starting With P | 0 | - | 4.88 | 77,828 |
| Capitals Starting With R | 0 | - | 4.87 | 81,507 |
| Capitals Starting With S | 0 | - | 4.90 | 85,430 |
| Capitals Starting With T | 0 | - | 4.85 | 75,872 |
| Capitals Starting With W | 0 | - | 4.87 | 91,073 |
| Capitals Starting With A | 0 | - | 4.97 | 127,431 |
| Capitals Starting With B | 0 | - | 4.89 | 118,057 |
| Capitals Starting With D | 0 | - | 4.93 | 96,070 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,548 |
| Olympic Host Countries | 0 | - | 4.98 | 200,360 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,618 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,838 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 307,991 |
| The Only European Country ... | 0 | - | 4.91 | 215,999 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,749 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,777 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,582 |
| Countries of Africa | 0 | - | 5.00 | 2,530,238 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,960 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,643 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,903 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,477 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,022 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,072 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,151 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,382 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,496 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,207 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,700 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,968 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,153 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,821 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,665 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,728 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,096 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,075 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,430 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,154 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,434 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,076 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,226 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,283 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 72,800 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,116 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,512 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,409 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,781 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,589 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 74,822 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 130,694 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,694 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,957 |
| Former Capitals | 0 | - | 4.88 | 71,378 |
| Capital Cities Chain | 0 | - | 4.83 | 82,493 |
| Coldest World Capitals | 0 | - | 4.95 | 133,461 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,391 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,614 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,679 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,626 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,317 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,180 |
| Countries of the Middle East | 0 | - | 4.96 | 200,747 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,004 |
| Slavic Countries | 0 | - | 4.96 | 111,495 |
| African Island Countries | 0 | - | 4.96 | 101,434 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,790 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,807 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 46,444 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,777 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,901 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,020,602 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,660 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,280 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,177 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,865 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,649 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,432 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,534 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,511 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,085 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,978 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,387 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,006 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,973 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,817 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,079 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,835 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,426 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 183,511 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,020 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,626 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,767 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,344 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,038 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,131 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,307 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,583 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,838 |
| Ancient City to Country | 0 | - | 4.70 | 107,928 |
| Official Cities in the UK | 0 | - | 4.89 | 283,062 |
| City-States | 0 | - | 4.53 | 37,228 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,073 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,619 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,620 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,161 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,904 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,361 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,082 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,525 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,453 |
| Capital Names Created by Only 4 Letters | 0 | - | 4.46 | 57,214 |
| Capitals Based on Last Two Letters | 0 | - | 4.48 | 58,850 |
