| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.90 | 205,775 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,410 |
| Africa Capitals Quiz | 0 | - | 4.99 | 628,384 |
| Asia Capitals Quiz | 0 | - | 4.98 | 588,476 |
| Nordic Countries and Capitals | 0 | - | 4.94 | 76,278 |
| Random European Capital to Country | 0 | - | 4.97 | 151,730 |
| Random European Country to Capital | 0 | - | 4.92 | 134,176 |
| Random Asian Country to Capital | 0 | - | 4.94 | 85,124 |
| Random Asian Capital to Country | 0 | - | 4.97 | 88,486 |
| Random African Capital to Country | 0 | - | 4.97 | 78,667 |
| Random African Country to Capital | 0 | - | 4.94 | 61,452 |
| World Capitals Quiz | 0 | - | 5.00 | 4,465,070 |
| Europe Capital to Country | 0 | - | 4.99 | 218,361 |
| Asia Capital to Country | 0 | - | 4.96 | 105,110 |
| EU Capitals with No Hints | 0 | - | 4.95 | 123,386 |
| European Capitals by Map | 0 | - | 4.99 | 91,297 |
| African Capitals by Map | 0 | - | 4.99 | 109,178 |
| Asian Capitals by Map | 0 | - | 4.98 | 46,117 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.87 | 78,177 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.95 | 71,431 |
| European Coastal Capitals | 0 | - | 4.95 | 76,584 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 46,316 |
| Capitals of Oceania Quiz | 0 | - | 4.98 | 225,613 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.90 | 192,020 |
| Capitals of Mediterranean Countries | 0 | - | 4.96 | 75,770 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 126,031 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,371,058 |
| South America Capitals Quiz | 0 | - | 5.00 | 416,030 |
| North America Capitals Quiz | 0 | - | 4.99 | 184,338 |
| African Capitals - Map Quiz | 0 | - | 4.95 | 51,624 |
| Top 10 Most Remote European Capitals | 0 | - | 4.84 | 83,717 |
| European Capitals - Map Quiz | 0 | - | 4.98 | 104,397 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 77,422 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 66,568 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 50,535 |
| European Capitals Ending in N | 0 | - | 4.91 | 73,520 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,367 |
| Countries with Megacities | 0 | - | 4.99 | 195,049 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,713 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,997 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,869 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,841 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,453 |
| Global Cities on a World Map | 0 | - | 4.93 | 90,786 |
| Capitals of Canadian Provinces | 0 | - | 4.86 | 73,090 |
| Northernmost Capital Cities | 0 | - | 4.98 | 93,212 |
| Most Remote Capital Cities | 0 | - | 4.90 | 43,204 |
| Capital Cities: Ports and Saints | 0 | - | 4.94 | 33,850 |
| Capitals with the Shortest Names | 0 | - | 4.96 | 89,899 |
| Same Letter Country and Capital | 0 | - | 4.99 | 126,214 |
| Countries by Capital City | 0 | - | 4.99 | 48,460 |
| Capital Cities Based on First Two Letters | 0 | - | 4.84 | 65,386 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 97,497 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 72,289 |
| Moved Capital Cities | 0 | - | 4.94 | 51,965 |
| Name a Valid European Capital | 0 | - | 4.92 | 103,798 |
| European Capital Superlatives - Top 2 | 0 | - | 4.93 | 61,379 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,089 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,510 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,776 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 114,905 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 37,966 |
| Most Guessed European Capitals | 0 | - | 4.89 | 96,143 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,467 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,669 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,319 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,533 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,507 |
| Summer Olympic City Bids | 0 | - | 4.93 | 36,940 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.87 | 90,650 |
| Cities by Former Name | 0 | - | 4.85 | 70,732 |
| Capitals in their Native Languages | 0 | - | 4.95 | 127,256 |
| Nearest Capital City #1 | 0 | - | 4.81 | 52,228 |
| World Capitals by Proximity | 0 | - | 4.87 | 284,756 |
| World Capitals Deepest in a Country's Territory | 0 | - | 4.96 | 48,598 |
| World Capitals by Map | 0 | - | 5.00 | 238,645 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 49,974 |
| Random Capital to Country | 0 | - | 4.99 | 2,345,611 |
| Random Country to Capital | 0 | - | 4.98 | 796,050 |
| World Capitals By Letter - H | 0 | - | 4.85 | 70,818 |
| World Capitals By Letter - K | 0 | - | 4.82 | 65,496 |
| World Capitals By Letter - M | 0 | - | 4.90 | 85,424 |
| World Capitals By Letter - P | 0 | - | 4.85 | 66,621 |
| World Capitals By Letter - R | 0 | - | 4.87 | 71,888 |
| World Capitals By Letter - S | 0 | - | 4.89 | 74,028 |
| World Capitals By Letter - W | 0 | - | 4.88 | 81,799 |
| World Capitals By Letter - A | 0 | - | 4.96 | 103,870 |
| World Capitals By Letter - B | 0 | - | 4.84 | 96,220 |
| World Capitals By Letter - D | 0 | - | 4.91 | 78,467 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,689 |
| Olympic Host Countries | 0 | - | 4.98 | 160,763 |
| 10 Easternmost Countries in Europe | 0 | - | 4.84 | 91,093 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 229,883 |
| The Only European Country ... | 0 | - | 4.94 | 176,285 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 194,394 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.92 | 86,430 |
| Countries of Africa | 0 | - | 5.00 | 2,145,354 |
| Random African Capitals on a Map | 0 | - | 4.95 | 47,760 |
| Random Asian Capitals on a Map | 0 | - | 4.82 | 44,724 |
| Random European Capitals on a Map | 0 | - | 4.97 | 106,116 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 79,288 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.86 | 38,844 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 123,549 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,844 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,318 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,769 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,572 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,727 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,538 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,884 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,161 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,942 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,248 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,711 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,373 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,620 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,361 |
| Biggest City by Body of Water | 0 | - | 4.52 | 38,816 |
| Global Cities Quiz | 0 | - | 4.64 | 156,381 |
| Southernmost Major Cities | 0 | - | 4.41 | 45,154 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.45 | 68,094 |
| Cities with the Most Foreign Embassies | 0 | - | 4.66 | 45,188 |
| Most Appealing Cities for Working Abroad | 0 | - | 4.41 | 34,936 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.91 | 89,294 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.94 | 78,903 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 192,514 |
| Most-Visited Cities in Europe | 0 | - | 4.92 | 55,713 |
| Cities with the Biggest Economies | 0 | - | 4.92 | 117,901 |
| Five Most Guessed Cities by Continent | 0 | - | 4.97 | 104,084 |
| Capital Cities Chain | 0 | - | 4.86 | 70,944 |
| Coldest World Capitals | 0 | - | 4.96 | 127,744 |
| Capital Cities with Spanish Names | 0 | - | 4.85 | 61,701 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 77,997 |
| U.S. State Capitals Map Quiz | 0 | - | 4.91 | 123,862 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,172,811 |
| Landlocked Countries in Africa | 0 | - | 4.98 | 19,008 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 183,742 |
| Countries of the Middle East | 0 | - | 4.96 | 171,662 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 73,901 |
| Slavic Countries | 0 | - | 4.96 | 99,885 |
| African Island Countries | 0 | - | 4.96 | 88,664 |
| Straight Shot to Antarctica | 0 | - | 4.90 | 36,983 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 142,943 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 139,317 |
| Countries of North America Quiz | 0 | - | 5.00 | 870,906 |
| Countries of Asia with Two or More Words | 0 | - | 4.95 | 110,114 |
| Asian Countries Ending in "IA" | 0 | - | 4.94 | 92,857 |
| African Countries with the Shortest Names | 0 | - | 4.97 | 118,345 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 55,962 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 57,888 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 196,600 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 159,700 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 124,964 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 106,497 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 131,607 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 137,668 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 104,078 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 130,096 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 88,168 |
| 10 Easternmost Countries in Asia | 0 | - | 4.98 | 95,951 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 73,928 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 203,663 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 159,611 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 156,195 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 80,027 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,309 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.90 | 84,229 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 145,017 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,093 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,244 |
| Lonely Planet Top 200 Cities | 0 | - | 4.64 | 209,090 |
| Ancient City to Country | 0 | - | 4.76 | 100,452 |
| Official Cities in the UK | 0 | - | 4.87 | 230,462 |
| City-States | 0 | - | 4.53 | 34,625 |
| Cities with the Most International Tourists | 0 | - | 4.46 | 49,663 |
| Most Guessed Cities by Country #3 | 0 | - | 4.85 | 18,942 |
| Divided World City Name Puzzle #1 | 0 | - | 4.90 | 39,348 |
| City Where It Happened #2 | 0 | - | 4.43 | 49,990 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 53,291 |
| Capitals A-Z | 0 | - | 4.84 | 41,575 |
| Capital Names Created by Only 4 Letters | 0 | - | 4.44 | 49,151 |
| World Capitals Closest to Jerusalem | 0 | - | 4.45 | 42,692 |
| Capitals by First and Last Letter | 0 | - | 4.42 | 63,674 |
| Capitals Based on Last Two Letters | 0 | - | 4.47 | 55,299 |
| Capital Cities by Body of Water | 0 | - | 4.87 | 53,053 |
| Asian Coastal Capitals | 0 | - | 4.56 | 20,139 |
| Most Guessed Capitals on JetPunk | 0 | - | 4.90 | 88,987 |
| European Capitals with the Least Sunshine | 0 | - | 4.48 | 47,439 |
| Word Scramble - European Capitals | 0 | - | 4.77 | 86,740 |
| Top Five Capitals By Category #1 | 0 | - | 4.58 | 52,821 |
| Top Five Capitals By Category #2 | 0 | - | 4.52 | 45,259 |
| Most Expensive Capital Cities | 0 | - | 4.54 | 71,842 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 87,949 |
| 10 Westernmost Capital Cities in Asia | 0 | - | 4.62 | 13,582 |
| Flags to Capitals #1 | 0 | - | 4.97 | 47,650 |
| Flags to Capitals #2 | 0 | - | 4.94 | 35,751 |
| Five Most Guessed Capital Cities by Continent | 0 | - | 4.85 | 84,555 |
| Capital Cities with the Least Precipitation | 0 | - | 4.91 | 27,325 |
| The Only Country ... | 0 | - | 4.87 | 45,111 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 101,065 |
