| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,544 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 227,357 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,303 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,312 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,456 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,964 |
| Random European Capital to Country | 0 | - | 4.98 | 191,868 |
| Random European Country to Capital | 0 | - | 4.93 | 165,686 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,891 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,284 |
| Random African Capital to Country | 0 | - | 4.97 | 101,169 |
| Random African Country to Capital | 0 | - | 4.94 | 71,636 |
| World Capitals Quiz | 0 | - | 5.00 | 5,097,331 |
| Europe Capital to Country | 0 | - | 4.99 | 251,657 |
| Asia Capital to Country | 0 | - | 4.96 | 127,230 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,701 |
| European Capitals by Map | 0 | - | 4.99 | 141,520 |
| African Capitals by Map | 0 | - | 4.99 | 141,593 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,655 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,674 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,015 |
| European Coastal Capitals | 0 | - | 4.95 | 91,125 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,090 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,913 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 225,375 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,074 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,592 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,126 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,348 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,710 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,596,187 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,051 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,593 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,035 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,435 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,894 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,273 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,480 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,806 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,604 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,053 |
| Capitals of the Stans | 0 | - | 4.95 | 27,069 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,668 |
| Countries with Megacities | 0 | - | 4.99 | 266,174 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,404 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,835 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,689 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,957 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,026 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,476 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,947 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,832 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,016 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,965 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,847 |
| Countries by Capital City | 0 | - | 5.00 | 69,129 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,691 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,077 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,653 |
| Moved Capital Cities | 0 | - | 4.96 | 74,547 |
| Name a Valid European Capital | 0 | - | 4.95 | 153,321 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 22,127 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,753 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,460 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,142 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,836 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,892 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,217 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,207 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,735 |
| Single Vowel Capitals | 0 | - | 4.82 | 14,666 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,169 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,696 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,492 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,776 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,044 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,450 |
| North American Sports Cities | 0 | - | 4.83 | 172,965 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,502 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,812 |
| Name a City - European Countries | 0 | - | 4.90 | 65,977 |
| Name a Valid World City | 0 | - | 4.84 | 71,781 |
| Cities by Former Name | 0 | - | 4.83 | 91,922 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,617 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,896 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,658 |
| World Capitals by Map | 0 | - | 5.00 | 288,719 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,699 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,711 |
| Random Country to Capital | 0 | - | 4.98 | 925,782 |
| Capitals Starting With H | 0 | - | 4.91 | 93,046 |
| Capitals Starting With K | 0 | - | 4.88 | 84,103 |
| Capitals Starting With L | 0 | - | 4.81 | 92,174 |
| Capitals Starting With M | 0 | - | 4.93 | 108,655 |
| Capitals Starting With P | 0 | - | 4.88 | 78,696 |
| Capitals Starting With R | 0 | - | 4.88 | 82,244 |
| Capitals Starting With S | 0 | - | 4.90 | 86,280 |
| Capitals Starting With T | 0 | - | 4.85 | 76,582 |
| Capitals Starting With W | 0 | - | 4.87 | 91,564 |
| Capitals Starting With A | 0 | - | 4.97 | 128,728 |
| Capitals Starting With B | 0 | - | 4.89 | 119,134 |
| Capitals Starting With D | 0 | - | 4.93 | 96,922 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,319 |
| Olympic Host Countries | 0 | - | 4.98 | 201,618 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,637 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,767 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 312,569 |
| The Only European Country ... | 0 | - | 4.91 | 218,415 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,485 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,186 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,846 |
| Countries of Africa | 0 | - | 5.00 | 2,553,335 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,117 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,162 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,291 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,256 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,503 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,254 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,429 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,186 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,836 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,110 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,476 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,600 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,733 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,111 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,519 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,591 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,741 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,422 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,101 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,440 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,765 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,626 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,298 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,638 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 73,040 |
| Cities with the Most Foreign Embassies | 0 | - | 4.69 | 47,210 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,714 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,273 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,740 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,102 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,830 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,512 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,444 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,657 |
| Former Capitals | 0 | - | 4.88 | 71,619 |
| Capital Cities Chain | 0 | - | 4.84 | 83,210 |
| Coldest World Capitals | 0 | - | 4.95 | 134,079 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,992 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,401 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 149,984 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,877 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,271 |
| Countries of the Middle East | 0 | - | 4.96 | 202,295 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,955 |
| Slavic Countries | 0 | - | 4.96 | 112,196 |
| African Island Countries | 0 | - | 4.96 | 102,265 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,086 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,097 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 52,633 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,475 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,724 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,029,075 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 144,968 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,089 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,303 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,370 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,868 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,653 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,852 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,320 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,092 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,729 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,006 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,978 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,628 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,038 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,768 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,418 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,701 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,942 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,750 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,843 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,416 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,709 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,116 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,567 |
| Ancient City to Country | 0 | - | 4.70 | 108,263 |
| Official Cities in the UK | 0 | - | 4.89 | 285,578 |
| City-States | 0 | - | 4.53 | 37,369 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,450 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,773 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,165 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,237 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 37,341 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,876 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,193 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,579 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,708 |
