| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 217,984 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 122,684 |
| Africa Capitals Quiz | 0 | - | 4.99 | 690,385 |
| Asia Capitals Quiz | 0 | - | 4.97 | 649,427 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 80,498 |
| Random European Capital to Country | 0 | - | 4.97 | 181,930 |
| Random European Country to Capital | 0 | - | 4.93 | 142,383 |
| Random Asian Country to Capital | 0 | - | 4.91 | 91,011 |
| Random Asian Capital to Country | 0 | - | 4.97 | 96,216 |
| Random African Capital to Country | 0 | - | 4.97 | 86,031 |
| Random African Country to Capital | 0 | - | 4.94 | 66,611 |
| World Capitals Quiz | 0 | - | 5.00 | 4,805,260 |
| Europe Capital to Country | 0 | - | 4.99 | 236,054 |
| Asia Capital to Country | 0 | - | 4.95 | 121,086 |
| EU Capitals with No Hints | 0 | - | 4.96 | 136,388 |
| European Capitals by Map | 0 | - | 4.99 | 122,295 |
| African Capitals by Map | 0 | - | 4.99 | 123,377 |
| Asian Capitals by Map | 0 | - | 4.98 | 55,308 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.87 | 86,111 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 79,004 |
| European Coastal Capitals | 0 | - | 4.95 | 84,390 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.90 | 50,015 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 250,657 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.89 | 210,288 |
| Capitals of Mediterranean Countries | 0 | - | 4.96 | 79,254 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,490,456 |
| South America Capitals Quiz | 0 | - | 5.00 | 456,184 |
| North America Capitals Quiz | 0 | - | 4.99 | 202,960 |
| African Capitals - Map Quiz | 0 | - | 4.95 | 57,611 |
| Top 10 Most Remote European Capitals | 0 | - | 4.85 | 89,664 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 112,980 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 83,047 |
| European Capitals Furthest from the Sea | 0 | - | 4.90 | 70,599 |
| Asian Capitals - Map Quiz | 0 | - | 4.94 | 56,870 |
| European Capitals Ending in N | 0 | - | 4.92 | 77,983 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 158,889 |
| Countries with Megacities | 0 | - | 4.99 | 218,099 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 186,753 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 106,255 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 126,685 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 73,253 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 269,946 |
| Global Cities on a World Map | 0 | - | 4.94 | 97,381 |
| Capitals of Canadian Provinces | 0 | - | 4.87 | 83,881 |
| Northernmost Capital Cities | 0 | - | 4.98 | 102,253 |
| Most Remote Capital Cities | 0 | - | 4.90 | 48,641 |
| Capital Cities: Ports and Saints | 0 | - | 4.95 | 39,893 |
| Capitals with the Shortest Names | 0 | - | 4.96 | 100,433 |
| Same Letter Country and Capital | 0 | - | 4.99 | 138,342 |
| Countries by Capital City | 0 | - | 5.00 | 58,882 |
| Capital Cities Based on First Two Letters | 0 | - | 4.86 | 71,652 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 109,997 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 79,108 |
| Moved Capital Cities | 0 | - | 4.95 | 70,601 |
| Name a Valid European Capital | 0 | - | 4.95 | 143,095 |
| European Capital Superlatives - Top 2 | 0 | - | 4.92 | 65,466 |
| Countries by Sports League Revenue | 0 | - | 4.93 | 67,488 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,381,665 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 364,836 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 123,655 |
| Most Guessed European Capitals | 0 | - | 4.88 | 99,317 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 81,902 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 257,434 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 115,965 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 107,685 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 88,199 |
| Countries by Population Range - Tile Select | 0 | - | 4.85 | 54,990 |
| Summer Olympic City Bids | 0 | - | 4.92 | 39,512 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.86 | 97,430 |
| Name a City - European Countries | 0 | - | 4.93 | 59,241 |
| Cities by Former Name | 0 | - | 4.85 | 87,858 |
| Capitals in their Native Languages | 0 | - | 4.94 | 130,209 |
| Nearest Capital City #1 | 0 | - | 4.83 | 54,898 |
| World Capitals by Proximity | 0 | - | 4.89 | 314,251 |
| World Capitals Deepest in a Country's Territory | 0 | - | 4.96 | 51,448 |
| World Capitals by Map | 0 | - | 5.00 | 265,773 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.96 | 54,129 |
| Random Capital to Country | 0 | - | 4.99 | 2,494,594 |
| Random Country to Capital | 0 | - | 4.98 | 864,097 |
| World Capitals By Letter - H | 0 | - | 4.86 | 75,134 |
| World Capitals By Letter - K | 0 | - | 4.83 | 69,722 |
| World Capitals By Letter - M | 0 | - | 4.88 | 91,091 |
| World Capitals By Letter - P | 0 | - | 4.85 | 71,101 |
| World Capitals By Letter - R | 0 | - | 4.85 | 75,864 |
| World Capitals By Letter - S | 0 | - | 4.89 | 78,589 |
| World Capitals By Letter - T | 0 | - | 4.81 | 70,019 |
| World Capitals By Letter - W | 0 | - | 4.88 | 85,900 |
| World Capitals By Letter - A | 0 | - | 4.96 | 111,137 |
| World Capitals By Letter - B | 0 | - | 4.85 | 102,411 |
| World Capitals By Letter - D | 0 | - | 4.91 | 83,427 |
| Countries That Use the Euro | 0 | - | 4.93 | 75,996 |
| Olympic Host Countries | 0 | - | 4.98 | 189,708 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 104,557 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.94 | 258,377 |
| The Only European Country ... | 0 | - | 4.92 | 198,094 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 201,828 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 89,580 |
| Countries of Africa | 0 | - | 5.00 | 2,358,241 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 39,748 |
| Random African Capitals on a Map | 0 | - | 4.95 | 52,054 |
| Random Asian Capitals on a Map | 0 | - | 4.82 | 48,506 |
| Random European Capitals on a Map | 0 | - | 4.98 | 128,902 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 90,912 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.89 | 46,376 |
| Countries of Europe by Population | 0 | - | 4.98 | 163,000 |
| Most Populous Countries by Year | 0 | - | 4.81 | 102,734 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 81,712 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 103,491 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 100,818 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 107,423 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 84,941 |
| Most Populous World Capitals | 0 | - | 4.93 | 169,276 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 214,553 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 130,153 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 72,635 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 80,633 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 64,503 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 70,462 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 92,612 |
| Biggest City by Body of Water | 0 | - | 4.54 | 39,624 |
| Global Cities Quiz | 0 | - | 4.61 | 160,219 |
| Southernmost Major Cities | 0 | - | 4.42 | 46,192 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.46 | 70,997 |
| Cities with the Most Foreign Embassies | 0 | - | 4.69 | 46,355 |
| Most Appealing Cities for Working Abroad | 0 | - | 4.43 | 35,658 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.90 | 92,934 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 102,974 |
| Most Guessed Cities by Country #3 | 0 | - | 4.88 | 40,858 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 202,388 |
| Most-Visited Cities in Europe | 0 | - | 4.89 | 66,533 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 124,390 |
| Five Most Guessed Cities by Continent | 0 | - | 4.97 | 109,672 |
| Cities By Wikipedia Word Clouds A-Z | 0 | - | 4.84 | 30,901 |
| Former Capitals Quiz | 0 | - | 4.87 | 69,262 |
| Capital Cities Chain | 0 | - | 4.88 | 77,105 |
| Coldest World Capitals | 0 | - | 4.96 | 130,956 |
| Capital Cities with Spanish Names | 0 | - | 4.84 | 65,660 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 85,126 |
| U.S. State Capitals Map Quiz | 0 | - | 4.91 | 135,310 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,269,879 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 25,425 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.95 | 203,641 |
| Countries of the Middle East | 0 | - | 4.95 | 188,306 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 82,750 |
| Slavic Countries | 0 | - | 4.96 | 106,634 |
| African Island Countries | 0 | - | 4.96 | 96,102 |
| Straight Shot to Antarctica | 0 | - | 4.92 | 40,386 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.94 | 60,166 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 159,605 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 163,669 |
| Countries of North America Quiz | 0 | - | 5.00 | 954,190 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 119,734 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 101,369 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 129,056 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 135,139 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 208,564 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 185,904 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 148,164 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 110,282 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 138,499 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 145,548 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 111,432 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 154,864 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 94,606 |
| 10 Easternmost Countries in Asia | 0 | - | 4.98 | 103,017 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 82,637 |
| Name a Valid U.S. State Capital #1 | 0 | - | 4.81 | 52,978 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 220,311 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 173,002 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 170,182 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 98,747 |
| Countries by Population Decrease | 0 | - | 4.46 | 48,478 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 104,855 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 153,625 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.61 | 61,885 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.91 | 19,705 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 168,424 |
| Lonely Planet Top 200 Cities | 0 | - | 4.55 | 216,196 |
| Ancient City to Country | 0 | - | 4.70 | 104,897 |
| Official Cities in the UK | 0 | - | 4.89 | 260,576 |
| City-States | 0 | - | 4.54 | 36,263 |
| Cities with the Most International Tourists | 0 | - | 4.46 | 52,280 |
| Damaged and Destroyed Cities | 0 | - | 4.42 | 43,573 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 44,717 |
| City to Country - Tile Select #1 | 0 | - | 4.73 | 36,337 |
| City Where It Happened #2 | 0 | - | 4.44 | 52,033 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,065 |
| Capital Names Created by Only 4 Letters | 0 | - | 4.43 | 49,820 |
| Capitals Based on Last Two Letters | 0 | - | 4.47 | 57,314 |
| Capital Cities by Body of Water | 0 | - | 4.88 | 55,861 |
| Asian Coastal Capitals | 0 | - | 4.51 | 21,321 |
| Most Guessed Capitals on JetPunk | 0 | - | 4.89 | 117,707 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 49,147 |
| Word Scramble - European Capitals | 0 | - | 4.76 | 91,181 |
| Top Five Capitals By Category #1 | 0 | - | 4.55 | 55,795 |
| Top Five Capitals By Category #2 | 0 | - | 4.51 | 47,918 |
| Most Expensive Capital Cities | 0 | - | 4.55 | 77,505 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 92,322 |
| 10 Westernmost Capital Cities in Asia | 0 | - | 4.62 | 15,027 |
| Flags to Capitals #1 | 0 | - | 4.96 | 53,974 |
