| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,836 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 228,222 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,611 |
| Africa Capitals Quiz | 0 | - | 4.99 | 745,424 |
| Asia Capitals Quiz | 0 | - | 4.98 | 700,337 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,184 |
| Random European Capital to Country | 0 | - | 4.98 | 192,417 |
| Random European Country to Capital | 0 | - | 4.93 | 166,119 |
| Random Asian Country to Capital | 0 | - | 4.92 | 97,127 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,625 |
| Random African Capital to Country | 0 | - | 4.97 | 101,543 |
| Random African Country to Capital | 0 | - | 4.95 | 71,929 |
| World Capitals Quiz | 0 | - | 5.00 | 5,116,664 |
| Europe Capital to Country | 0 | - | 4.99 | 252,708 |
| Asia Capital to Country | 0 | - | 4.96 | 127,744 |
| EU Capitals with No Hints | 0 | - | 4.96 | 147,376 |
| European Capitals by Map | 0 | - | 4.99 | 142,687 |
| African Capitals by Map | 0 | - | 4.99 | 142,685 |
| Asian Capitals by Map | 0 | - | 4.98 | 64,165 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 93,183 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,442 |
| European Coastal Capitals | 0 | - | 4.95 | 91,543 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,290 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,477 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 226,838 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,270 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 128,085 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,544 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 155,045 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,971 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,603,315 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,850 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,812 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,398 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,756 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,378 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,530 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,702 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 62,103 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,852 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,936 |
| Capitals of the Stans | 0 | - | 4.95 | 27,259 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,629 |
| Countries with Megacities | 0 | - | 4.99 | 268,132 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,282 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,402 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,611 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,512 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,574 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,851 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,630 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,126 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,392 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,523 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,483 |
| Countries by Capital City | 0 | - | 5.00 | 69,711 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,234 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,399 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 85,008 |
| Moved Capital Cities | 0 | - | 4.96 | 74,760 |
| Name a Valid European Capital | 0 | - | 4.95 | 154,083 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 22,382 |
| World Capitals with a Unique First Letter | 0 | - | 4.83 | 75,880 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,726 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,876 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,719 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,171 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,610 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,644 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,961 |
| Single Vowel Capitals | 0 | - | 4.83 | 14,785 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,505 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,603 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,886 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,201 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,417 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,760 |
| North American Sports Cities | 0 | - | 4.82 | 173,351 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,619 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 103,087 |
| Name a City - European Countries | 0 | - | 4.89 | 66,452 |
| Name a Valid World City | 0 | - | 4.85 | 72,188 |
| Cities by Former Name | 0 | - | 4.83 | 92,218 |
| Capitals in their Native Languages | 0 | - | 4.95 | 134,000 |
| Nearest Capital City #1 | 0 | - | 4.83 | 58,064 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 70,011 |
| World Capitals by Map | 0 | - | 5.00 | 290,148 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,971 |
| Random Capital to Country | 0 | - | 4.99 | 2,605,090 |
| Random Country to Capital | 0 | - | 4.98 | 930,807 |
| Capitals Starting With H | 0 | - | 4.91 | 93,489 |
| Capitals Starting With K | 0 | - | 4.89 | 84,545 |
| Capitals Starting With L | 0 | - | 4.81 | 96,143 |
| Capitals Starting With M | 0 | - | 4.94 | 109,435 |
| Capitals Starting With P | 0 | - | 4.88 | 79,155 |
| Capitals Starting With R | 0 | - | 4.89 | 82,637 |
| Capitals Starting With S | 0 | - | 4.90 | 86,730 |
| Capitals Starting With T | 0 | - | 4.86 | 76,978 |
| Capitals Starting With W | 0 | - | 4.87 | 91,813 |
| Capitals Starting With A | 0 | - | 4.97 | 129,335 |
| Capitals Starting With B | 0 | - | 4.89 | 119,696 |
| Capitals Starting With D | 0 | - | 4.94 | 97,350 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,351 |
| Olympic Host Countries | 0 | - | 4.98 | 202,344 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,312 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,586 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 315,663 |
| The Only European Country ... | 0 | - | 4.91 | 219,733 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,467 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,913 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,009 |
| Countries of Africa | 0 | - | 5.00 | 2,566,167 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,220 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,354 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,459 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,609 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,869 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,387 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,786 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,708 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 96,001 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,640 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,913 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,935 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 91,100 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,292 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,931 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,109 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,058 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,641 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,315 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,589 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,949 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,911 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,350 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,817 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 73,166 |
| Cities with the Most Foreign Embassies | 0 | - | 4.69 | 47,245 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,843 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,734 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 47,114 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,914 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 76,429 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,864 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,730 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 24,022 |
| Former Capitals | 0 | - | 4.88 | 71,750 |
| Capital Cities Chain | 0 | - | 4.84 | 83,568 |
| Coldest World Capitals | 0 | - | 4.95 | 134,350 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,289 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,775 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 151,433 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,677 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,404 |
| Countries of the Middle East | 0 | - | 4.96 | 203,356 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,427 |
| Slavic Countries | 0 | - | 4.96 | 112,552 |
| African Island Countries | 0 | - | 4.96 | 102,788 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,266 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,823 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 53,831 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,876 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 171,460 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,909 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 145,442 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,252 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,839 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,781 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,098 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 145,020 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,586 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 118,116 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,765 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 100,112 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,368 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.95 | 47,832 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 90,037 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 235,025 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 185,547 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 195,399 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 105,146 |
| Countries by Population Decrease | 0 | - | 4.46 | 50,034 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 109,006 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,154 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,559 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,940 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,414 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,849 |
| Ancient City to Country | 0 | - | 4.72 | 108,418 |
| Official Cities in the UK | 0 | - | 4.89 | 287,046 |
| City-States | 0 | - | 4.53 | 37,444 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,560 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,866 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,513 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,309 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 37,633 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 27,298 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,364 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,606 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,965 |
