| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 227,973 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,721 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,814 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,496 |
| Africa Capitals Quiz | 0 | - | 4.99 | 744,259 |
| Asia Capitals Quiz | 0 | - | 4.98 | 699,211 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,114 |
| Random European Capital to Country | 0 | - | 4.98 | 192,222 |
| Random European Country to Capital | 0 | - | 4.93 | 165,970 |
| Random Asian Country to Capital | 0 | - | 4.92 | 97,033 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,491 |
| Random African Capital to Country | 0 | - | 4.97 | 101,393 |
| Random African Country to Capital | 0 | - | 4.95 | 71,781 |
| Europe Capital to Country | 0 | - | 4.99 | 252,249 |
| Asia Capital to Country | 0 | - | 4.96 | 127,607 |
| EU Capitals with No Hints | 0 | - | 4.96 | 147,075 |
| European Capitals by Map | 0 | - | 4.99 | 142,256 |
| African Capitals by Map | 0 | - | 4.99 | 142,323 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,992 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,956 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,242 |
| European Coastal Capitals | 0 | - | 4.95 | 91,370 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,220 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,896 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 225,911 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,196 |
| World Capitals Quiz | 0 | - | 5.00 | 5,108,933 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,177 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,016 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,372 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,288 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,632 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,189 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,430 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,610 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,992 |
| Flags to Capitals #1 | 0 | - | 4.96 | 58,951 |
| Flags to Capitals #2 | 0 | - | 4.95 | 44,805 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,743 |
| 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 | 335,888 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,600,516 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,717 |
| Name a Valid European Capital | 0 | - | 4.95 | 153,701 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,588 |
| Random American Countries on a Map | 0 | - | 4.96 | 100,413 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,494 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,836 |
| Every European Country Shape | 0 | - | 4.96 | 203,095 |
| Every Asian Country Shape | 0 | - | 4.95 | 88,642 |
| Every African Country Shape | 0 | - | 4.90 | 88,452 |
| Countries that Start with B - Shape Quiz | 0 | - | 4.89 | 27,814 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,821 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,668 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,292 |
| Countries with Megacities | 0 | - | 4.99 | 267,392 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,962 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,213 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,283 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,320 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,380 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,427 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,016 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,259 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,298 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,221 |
| Countries by Capital City | 0 | - | 5.00 | 69,480 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,913 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,273 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,064 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,179 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,865 |
| Moved Capital Cities | 0 | - | 4.96 | 74,684 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,284 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,395 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,450 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,753 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,347 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,623 |
| Shapes of Mediterranean Sea Countries | 0 | - | 4.80 | 56,102 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,373 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,325 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,721 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,941 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,277 |
| 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 | 102,983 |
| Cities by Former Name | 0 | - | 4.83 | 92,100 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,946 |
| Nearest Capital City #1 | 0 | - | 4.83 | 58,004 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 69,889 |
| World Capitals by Map | 0 | - | 5.00 | 289,612 |
| Capital Cities in a Ring of the World Map | 0 | - | 4.95 | 58,855 |
| Random Capital to Country | 0 | - | 4.99 | 2,602,445 |
| Random Country to Capital | 0 | - | 4.98 | 928,932 |
| Capitals Starting With H | 0 | - | 4.91 | 93,376 |
| Capitals Starting With K | 0 | - | 4.88 | 84,446 |
| Capitals Starting With M | 0 | - | 4.94 | 109,248 |
| Capitals Starting With P | 0 | - | 4.88 | 79,046 |
| Capitals Starting With R | 0 | - | 4.88 | 82,540 |
| Capitals Starting With S | 0 | - | 4.90 | 86,614 |
| Capitals Starting With T | 0 | - | 4.86 | 76,874 |
| Capitals Starting With W | 0 | - | 4.87 | 91,761 |
| Capitals Starting With A | 0 | - | 4.97 | 129,168 |
| Capitals Starting With B | 0 | - | 4.89 | 119,563 |
| Capitals Starting With D | 0 | - | 4.94 | 97,254 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 151,149 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,945 |
| Olympic Host Countries | 0 | - | 4.98 | 202,049 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,061 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,271 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 314,270 |
| The Only European Country ... | 0 | - | 4.91 | 219,226 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,081 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,629 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,948 |
| Random European Flag to Country | 0 | - | 4.90 | 184,307 |
| Random African Flag to Country | 0 | - | 4.87 | 75,674 |
| Countries of Africa | 0 | - | 5.00 | 2,561,647 |
| Flags of the Countries that Start with C | 0 | - | 4.89 | 130,715 |
| Flags of the Countries that Start with I | 0 | - | 4.94 | 154,665 |
| Flags of the Countries that Start with B | 0 | - | 4.97 | 43,619 |
| Flags of the Countries that Start with A | 0 | - | 4.94 | 127,941 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,886 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,259,207 |
| Flags of Asia Quiz | 0 | - | 4.99 | 620,893 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,891 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,255 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,235 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,908 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,636 |
| Every Country Shape | 0 | - | 5.00 | 471,580 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,032,164 |
| China by Picture | 0 | - | 4.51 | 63,764 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,903 |
| Flags of Countries that Border China | 0 | - | 4.94 | 100,153 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,849 |
| South America Flags Map Quiz | 0 | - | 4.95 | 89,021 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,482 |
| Flags of Africa Quiz | 0 | - | 5.00 | 478,149 |
| Single Vowel Capitals | 0 | - | 4.83 | 14,743 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,294 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,482 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,936 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,434 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,737 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,795 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,943 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,742 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,885 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,931 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,559 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,221 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,538 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,883 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,799 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,798 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,550 |
| Most Guessed Cities by Country #3 | 0 | - | 4.89 | 46,971 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,582 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 76,146 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 131,724 |
| Five Most Guessed Cities by Continent | 0 | - | 4.96 | 113,616 |
| U.S. Cities With Spanish Names | 0 | - | 4.94 | 23,873 |
| Former Capitals | 0 | - | 4.88 | 71,695 |
| Capital Cities Chain | 0 | - | 4.84 | 83,431 |
| Coldest World Capitals | 0 | - | 4.95 | 134,186 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,192 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 91,621 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,966 |
| Countries of the Middle East | 0 | - | 4.96 | 203,045 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,242 |
| Slavic Countries | 0 | - | 4.96 | 112,421 |
| African Island Countries | 0 | - | 4.96 | 102,592 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,201 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,563 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.84 | 53,299 |
| Countries that Start with P - Shape Quiz | 0 | - | 4.80 | 82,622 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 171,057 |
| Random African Countries on a Map | 0 | - | 4.99 | 297,998 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,214 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,717 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,998 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,882 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,364 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,759 |
| Countries that Start with A | 0 | - | 4.98 | 2,176,632 |
| Countries that Start with B | 0 | - | 4.95 | 2,307,342 |
| Countries that Start with C | 0 | - | 4.96 | 1,832,149 |
| Countries that Start with D | 0 | - | 4.96 | 716,893 |
| Countries that Start with E | 0 | - | 4.95 | 1,385,643 |
| Countries that Start with G | 0 | - | 4.97 | 1,512,131 |
| Countries that Start with H | 0 | - | 4.96 | 609,919 |
| Countries that Start with I | 0 | - | 4.92 | 1,295,011 |
| Countries that Start with J | 0 | - | 4.98 | 607,299 |
| Countries that Start with K | 0 | - | 4.97 | 821,110 |
