| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,659 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,352 |
| Africa Capitals Quiz | 0 | - | 4.99 | 732,723 |
| Asia Capitals Quiz | 0 | - | 4.98 | 688,270 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,244 |
| Random European Capital to Country | 0 | - | 4.98 | 189,648 |
| Random European Country to Capital | 0 | - | 4.92 | 147,756 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,594 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,699 |
| Random African Capital to Country | 0 | - | 4.97 | 99,931 |
| Random African Country to Capital | 0 | - | 4.94 | 70,411 |
| World Capitals Quiz | 0 | - | 5.00 | 5,045,395 |
| Europe Capital to Country | 0 | - | 4.99 | 248,630 |
| Asia Capital to Country | 0 | - | 4.96 | 126,064 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,948 |
| European Capitals by Map | 0 | - | 4.99 | 137,388 |
| African Capitals by Map | 0 | - | 4.99 | 132,689 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,621 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,508 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,884 |
| European Coastal Capitals | 0 | - | 4.95 | 90,029 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,304 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,883 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 222,557 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,532 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,151 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,853 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,583 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,189 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,575,870 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,692 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,903 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,903 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,629 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,486 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,423 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,866 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,744 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,937 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 134,437 |
| Capitals of the Stans | 0 | - | 4.95 | 26,567 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,037 |
| Countries with Megacities | 0 | - | 4.99 | 248,475 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,919 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,423 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,308 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,366 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,307 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,646 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,433 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,963 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,935 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,138 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,991 |
| Countries by Capital City | 0 | - | 5.00 | 67,256 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,621 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,155 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,605 |
| Moved Capital Cities | 0 | - | 4.96 | 73,805 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,457 |
| Random Countries and Capitals without Vowels | 0 | - | 4.61 | 21,232 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 74,857 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,850 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,030 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,657 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,539 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,392 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,803 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,317 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,212 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,697 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,215 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,869 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,014 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,560 |
| North American Sports Cities | 0 | - | 4.83 | 171,264 |
| Summer Olympic City Bids | 0 | - | 4.93 | 42,011 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,970 |
| Name a City - European Countries | 0 | - | 4.91 | 64,735 |
| Cities by Former Name | 0 | - | 4.84 | 91,187 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,174 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,389 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,356 |
| World Capitals by Map | 0 | - | 5.00 | 284,458 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 57,892 |
| Random Capital to Country | 0 | - | 4.99 | 2,582,640 |
| Random Country to Capital | 0 | - | 4.98 | 914,094 |
| Capitals Starting With H | 0 | - | 4.90 | 91,633 |
| Capitals Starting With K | 0 | - | 4.85 | 75,879 |
| Capitals Starting With L | 0 | - | 4.81 | 87,059 |
| Capitals Starting With M | 0 | - | 4.93 | 106,452 |
| Capitals Starting With P | 0 | - | 4.88 | 77,379 |
| Capitals Starting With R | 0 | - | 4.87 | 81,151 |
| Capitals Starting With S | 0 | - | 4.89 | 85,008 |
| Capitals Starting With T | 0 | - | 4.84 | 75,471 |
| Capitals Starting With W | 0 | - | 4.89 | 90,790 |
| Capitals Starting With A | 0 | - | 4.97 | 126,823 |
| Capitals Starting With B | 0 | - | 4.89 | 117,532 |
| Capitals Starting With D | 0 | - | 4.93 | 95,616 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,694 |
| Olympic Host Countries | 0 | - | 4.98 | 199,342 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,157 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,121 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 305,346 |
| The Only European Country ... | 0 | - | 4.91 | 214,811 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,835 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,112 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,415 |
| Countries of Africa | 0 | - | 5.00 | 2,517,407 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 40,876 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,415 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 50,760 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,141 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,765 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,964 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,967 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,660 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,293 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,732 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,263 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,667 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,835 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,554 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,864 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,853 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,589 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,471 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,843 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,728 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,970 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,460 |
| Biggest City by Body of Water | 0 | - | 4.51 | 40,186 |
| Southernmost Major Cities | 0 | - | 4.48 | 56,980 |
| U.S. City Prefixes and Suffixes | 0 | - | 4.47 | 72,688 |
| Cities with the Most Foreign Embassies | 0 | - | 4.68 | 47,069 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,411 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,951 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 45,454 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,711 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 74,295 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,987 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 112,493 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 22,574 |
| Former Capitals | 0 | - | 4.88 | 71,237 |
| Capital Cities Chain | 0 | - | 4.84 | 82,144 |
| Coldest World Capitals | 0 | - | 4.95 | 133,171 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,046 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,255 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,976 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,322,494 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,101 |
| Countries of the Middle East | 0 | - | 4.96 | 199,630 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,607 |
| Slavic Countries | 0 | - | 4.96 | 111,136 |
| African Island Countries | 0 | - | 4.96 | 101,058 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,629 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,131 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.83 | 45,489 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,421 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,467 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,015,892 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,092 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,060 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,024 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,104 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,337 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,438 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,609 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,817 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,583 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,655 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,510 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,751 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,525 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,559 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,460 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,327 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,253 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,672 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,972 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,698 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,974 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.84 | 23,103 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,835 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,485 |
| Ancient City to Country | 0 | - | 4.70 | 107,754 |
| Official Cities in the UK | 0 | - | 4.89 | 281,588 |
| City-States | 0 | - | 4.53 | 37,158 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 53,901 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,560 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,268 |
| City to Country - Tile Select #1 | 0 | - | 4.70 | 37,104 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,613 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 26,019 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,019 |
| Capital Cities with the Highest Elevation | 0 | - | 4.42 | 54,496 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,244 |
| Capital Names Created by Only 4 Letters | 0 | - | 4.46 | 57,179 |
| Capitals Based on Last Two Letters | 0 | - | 4.48 | 58,746 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,391 |
