| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 227,977 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,723 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,815 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,497 |
| Africa Capitals Quiz | 0 | - | 4.99 | 744,271 |
| Asia Capitals Quiz | 0 | - | 4.98 | 699,228 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,117 |
| Random European Capital to Country | 0 | - | 4.98 | 192,223 |
| Random European Country to Capital | 0 | - | 4.93 | 165,970 |
| Random Asian Country to Capital | 0 | - | 4.92 | 97,034 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,492 |
| Random African Capital to Country | 0 | - | 4.97 | 101,393 |
| Random African Country to Capital | 0 | - | 4.95 | 71,790 |
| Europe Capital to Country | 0 | - | 4.99 | 252,255 |
| Asia Capital to Country | 0 | - | 4.96 | 127,608 |
| EU Capitals with No Hints | 0 | - | 4.96 | 147,080 |
| European Capitals by Map | 0 | - | 4.99 | 142,264 |
| African Capitals by Map | 0 | - | 4.99 | 142,325 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,996 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,960 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,246 |
| European Coastal Capitals | 0 | - | 4.95 | 91,376 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,222 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,901 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 225,923 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,196 |
| World Capitals Quiz | 0 | - | 5.00 | 5,109,041 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,184 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,017 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,377 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,288 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,633 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,191 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,431 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,613 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,994 |
| Flags to Capitals #1 | 0 | - | 4.96 | 58,953 |
| Flags to Capitals #2 | 0 | - | 4.95 | 44,807 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,744 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.89 | 99,777 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.86 | 114,681 |
| Countries that Start with A - Shape Quiz | 0 | - | 4.93 | 35,146 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.94 | 83,226 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,912 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,600,562 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,717 |
| Name a Valid European Capital | 0 | - | 4.95 | 153,706 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,588 |
| Random American Countries on a Map | 0 | - | 4.96 | 100,415 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,496 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,837 |
| Every European Country Shape | 0 | - | 4.96 | 203,099 |
| Every Asian Country Shape | 0 | - | 4.95 | 88,643 |
| Every African Country Shape | 0 | - | 4.90 | 88,453 |
| Countries that Start with B - Shape Quiz | 0 | - | 4.89 | 27,814 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,845 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,673 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,295 |
| Countries with Megacities | 0 | - | 4.99 | 267,399 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,966 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,218 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,296 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,323 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,384 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,431 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,017 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,261 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,301 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,225 |
| Countries by Capital City | 0 | - | 5.00 | 69,484 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,915 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,273 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,070 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,180 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,867 |
| Moved Capital Cities | 0 | - | 4.96 | 74,685 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,287 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,397 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,452 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,754 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,347 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,624 |
| Shapes of Mediterranean Sea Countries | 0 | - | 4.80 | 56,103 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,374 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,330 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,722 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,943 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,278 |
| North American Sports Cities | 0 | - | 4.82 | 173,196 |
| Summer Olympic City Bids | 0 | - | 4.94 | 42,577 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,984 |
| Cities by Former Name | 0 | - | 4.83 | 92,104 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,949 |
| Nearest Capital City #1 | 0 | - | 4.83 | 58,004 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,890 |
| World Capitals by Map | 0 | - | 5.00 | 289,620 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,855 |
| Random Capital to Country | 0 | - | 4.99 | 2,602,485 |
| Random Country to Capital | 0 | - | 4.98 | 928,951 |
| Capitals Starting With H | 0 | - | 4.91 | 93,378 |
| Capitals Starting With K | 0 | - | 4.88 | 84,450 |
| Capitals Starting With M | 0 | - | 4.94 | 109,254 |
| Capitals Starting With P | 0 | - | 4.88 | 79,050 |
| Capitals Starting With R | 0 | - | 4.88 | 82,542 |
| Capitals Starting With S | 0 | - | 4.90 | 86,616 |
| Capitals Starting With T | 0 | - | 4.86 | 76,875 |
| Capitals Starting With W | 0 | - | 4.87 | 91,761 |
| Capitals Starting With A | 0 | - | 4.97 | 129,171 |
| Capitals Starting With B | 0 | - | 4.89 | 119,566 |
| Capitals Starting With D | 0 | - | 4.94 | 97,256 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 151,159 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,952 |
| Olympic Host Countries | 0 | - | 4.98 | 202,052 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,066 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,274 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 314,289 |
| The Only European Country ... | 0 | - | 4.91 | 219,234 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,085 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,632 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,949 |
| Random European Flag to Country | 0 | - | 4.90 | 184,309 |
| Random African Flag to Country | 0 | - | 4.87 | 75,675 |
| Countries of Africa | 0 | - | 5.00 | 2,561,727 |
| Flags of the Countries that Start with C | 0 | - | 4.89 | 130,716 |
| Flags of the Countries that Start with I | 0 | - | 4.94 | 154,668 |
| Flags of the Countries that Start with B | 0 | - | 4.97 | 43,622 |
| Flags of the Countries that Start with A | 0 | - | 4.94 | 127,942 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,888 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,259,246 |
| Flags of Asia Quiz | 0 | - | 4.99 | 620,916 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,892 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,286 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,238 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,919 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,643 |
| Every Country Shape | 0 | - | 5.00 | 471,601 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,032,185 |
| China by Picture | 0 | - | 4.51 | 63,764 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,906 |
| Flags of Countries that Border China | 0 | - | 4.94 | 100,153 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,851 |
| South America Flags Map Quiz | 0 | - | 4.95 | 89,022 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,484 |
| Flags of Africa Quiz | 0 | - | 5.00 | 478,182 |
| Single Vowel Capitals | 0 | - | 4.83 | 14,743 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,305 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,487 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,936 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,439 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,739 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,796 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,944 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,744 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,887 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,934 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,560 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,222 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,539 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,886 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,803 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,799 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,551 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,972 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,585 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 76,150 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,724 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,618 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,874 |
| Former Capitals | 0 | - | 4.88 | 71,696 |
| Capital Cities Chain | 0 | - | 4.84 | 83,432 |
| Coldest World Capitals | 0 | - | 4.95 | 134,186 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,193 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,621 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,971 |
| Countries of the Middle East | 0 | - | 4.96 | 203,052 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,242 |
| Slavic Countries | 0 | - | 4.96 | 112,421 |
| African Island Countries | 0 | - | 4.96 | 102,597 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,201 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,569 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 53,304 |
| Countries that Start with P - Shape Quiz | 0 | - | 4.80 | 82,623 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 171,057 |
| Random African Countries on a Map | 0 | - | 4.99 | 298,002 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,214 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,720 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 171,001 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,885 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,369 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,765 |
| Countries that Start with A | 0 | - | 4.98 | 2,176,659 |
| Countries that Start with B | 0 | - | 4.95 | 2,307,380 |
| Countries that Start with C | 0 | - | 4.96 | 1,832,170 |
| Countries that Start with D | 0 | - | 4.96 | 716,909 |
| Countries that Start with E | 0 | - | 4.95 | 1,385,663 |
| Countries that Start with G | 0 | - | 4.97 | 1,512,145 |
| Countries that Start with H | 0 | - | 4.96 | 609,927 |
| Countries that Start with I | 0 | - | 4.92 | 1,295,024 |
| Countries that Start with J | 0 | - | 4.98 | 607,317 |
| Countries that Start with K | 0 | - | 4.97 | 821,127 |
