| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,516 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 227,280 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,270 |
| Africa Capitals Quiz | 0 | - | 4.99 | 741,961 |
| Asia Capitals Quiz | 0 | - | 4.98 | 696,912 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,947 |
| Random European Capital to Country | 0 | - | 4.98 | 191,813 |
| Random European Country to Capital | 0 | - | 4.93 | 165,658 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,872 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,256 |
| Random African Capital to Country | 0 | - | 4.97 | 101,141 |
| Random African Country to Capital | 0 | - | 4.94 | 71,608 |
| World Capitals Quiz | 0 | - | 5.00 | 5,095,088 |
| Europe Capital to Country | 0 | - | 4.99 | 251,533 |
| Asia Capital to Country | 0 | - | 4.96 | 127,174 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,637 |
| European Capitals by Map | 0 | - | 4.99 | 141,363 |
| African Capitals by Map | 0 | - | 4.99 | 141,348 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,567 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,623 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,972 |
| European Coastal Capitals | 0 | - | 4.95 | 91,075 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,068 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,721 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 225,260 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,050 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,542 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,079 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,271 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,284 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,404 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,829 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,429 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,970 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,389 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,814 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,238 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,457 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,767 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,569 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 136,976 |
| Capitals of the Stans | 0 | - | 4.95 | 27,056 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,452 |
| Countries with Megacities | 0 | - | 4.99 | 265,891 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,247 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,756 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,502 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,854 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,964 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,441 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,891 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,788 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,978 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,908 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,774 |
| Countries by Capital City | 0 | - | 5.00 | 69,057 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,631 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,042 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,623 |
| Moved Capital Cities | 0 | - | 4.96 | 74,518 |
| Name a Valid European Capital | 0 | - | 4.95 | 153,222 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 22,095 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,737 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,434 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,098 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,305 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,732 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,042 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,114 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,710 |
| Single Vowel Capitals | 0 | - | 4.82 | 14,648 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,123 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,615 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,439 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,734 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,985 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,405 |
| North American Sports Cities | 0 | - | 4.83 | 172,932 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,484 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,777 |
| Name a City - European Countries | 0 | - | 4.90 | 65,932 |
| Name a Valid World City | 0 | - | 4.84 | 71,727 |
| Cities by Former Name | 0 | - | 4.83 | 91,891 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,596 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,871 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,612 |
| World Capitals by Map | 0 | - | 5.00 | 288,534 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,667 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,093 |
| Random Country to Capital | 0 | - | 4.98 | 925,358 |
| Capitals Starting With H | 0 | - | 4.91 | 92,907 |
| Capitals Starting With K | 0 | - | 4.88 | 83,960 |
| Capitals Starting With L | 0 | - | 4.81 | 88,414 |
| Capitals Starting With M | 0 | - | 4.93 | 108,389 |
| Capitals Starting With P | 0 | - | 4.88 | 78,532 |
| Capitals Starting With R | 0 | - | 4.87 | 82,128 |
| Capitals Starting With S | 0 | - | 4.90 | 86,124 |
| Capitals Starting With T | 0 | - | 4.85 | 76,460 |
| Capitals Starting With W | 0 | - | 4.87 | 91,485 |
| Capitals Starting With A | 0 | - | 4.97 | 128,541 |
| Capitals Starting With B | 0 | - | 4.89 | 118,938 |
| Capitals Starting With D | 0 | - | 4.93 | 96,808 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,211 |
| Olympic Host Countries | 0 | - | 4.98 | 201,554 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,586 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,665 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 312,322 |
| The Only European Country ... | 0 | - | 4.91 | 218,255 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,368 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,099 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,820 |
| Countries of Africa | 0 | - | 5.00 | 2,552,104 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,109 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,110 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,245 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,213 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,479 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,249 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,298 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,129 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,817 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,032 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,424 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,548 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,689 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,089 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,477 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,542 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,709 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,397 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,074 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,423 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,736 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,588 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,295 |
| Southernmost Major Cities | 0 | - | 4.48 | 57,618 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.48 | 73,028 |
| Cities with the Most Foreign Embassies | 0 | - | 4.69 | 47,208 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,696 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,234 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,700 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,024 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,774 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,478 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,410 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,624 |
| Former Capitals | 0 | - | 4.88 | 71,600 |
| Capital Cities Chain | 0 | - | 4.84 | 83,171 |
| Coldest World Capitals | 0 | - | 4.95 | 134,058 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,951 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,343 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 148,723 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,315 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,150 |
| Countries of the Middle East | 0 | - | 4.96 | 202,209 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,907 |
| Slavic Countries | 0 | - | 4.96 | 112,154 |
| African Island Countries | 0 | - | 4.96 | 102,210 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,069 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,038 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 52,489 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,428 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,653 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,576 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 144,922 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,020 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,251 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,321 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,852 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,620 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,808 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,279 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,045 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,689 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,965 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,946 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,572 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,937 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,692 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,326 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,659 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,932 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,728 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,790 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,405 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,679 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,079 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,536 |
| Ancient City to Country | 0 | - | 4.70 | 108,245 |
| Official Cities in the UK | 0 | - | 4.89 | 285,414 |
| City-States | 0 | - | 4.53 | 37,362 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,435 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,769 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,145 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,234 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 37,313 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,850 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,187 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,577 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,692 |
