| Busiest Airports in Europe | 0 | - | 4.91 | 146,000 |
| World's Busiest Airports | 0 | - | 4.96 | 232,260 |
| Countries with the Most Airports | 0 | - | 4.96 | 98,517 |
| Airport Codes Quiz #1 | 0 | - | 4.81 | 214,618 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,311,471 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,195 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,923 |
| Top World Languages | 0 | - | 4.92 | 819,863 |
| Busiest Airports in the United States | 0 | - | 4.54 | 135,413 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,512 |
| Places in their Native Language #2 | 0 | - | 4.81 | 133,728 |
| Cities by Airports | 0 | - | 4.49 | 88,632 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 135,530 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 125,059 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 120,740 |
| Busiest Air Routes in the World | 0 | - | 4.54 | 38,284 |
| Airports Named for People #1 | 0 | - | 4.46 | 55,869 |
| Airport Codes Quiz #2 | 0 | - | 4.39 | 96,871 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 72,178 |
| World Currency Quiz | 0 | - | 4.91 | 301,809 |
| Boundary Waters | 0 | - | 4.92 | 88,364 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,063 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,884 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,130 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,307 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,821 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,067 |
| Largest Countries with Little Tourism | 0 | - | 4.70 | 61,642 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,960 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,137 |
| Tourist Route of Europe | 0 | - | 4.24 | 42,898 |
| Landlocked Countries | 0 | - | 4.99 | 418,553 |
| U.S. National Parks Map Quiz | 0 | - | 4.48 | 55,849 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,482 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,596 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,622 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,847 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 100,466 |
| World Capitals Quiz | 0 | - | 5.00 | 5,061,872 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,784 |
| Himalayan Countries | 0 | - | 4.94 | 137,245 |
| Andean Countries | 0 | - | 4.95 | 83,840 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,100 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,502 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,772 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,290 |
| Danube Countries | 0 | - | 4.97 | 71,613 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,490 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,011 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,575 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,640 |
| European Landlocked Countries | 0 | - | 4.99 | 146,727 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,073 |
| Countries with the Most Species | 0 | - | 4.99 | 102,865 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,208 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,419 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,574 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,275 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,952 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,331 |
| Countries in the Alps | 0 | - | 4.87 | 117,627 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 81,997 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,091 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,296 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,382 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,946 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,049 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,417 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,233 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,147 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,943 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,517 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,454 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,317 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,893 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,164 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,180 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,118 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,037 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,553 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,473 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,213 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,133 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,970 |
| Largest Countries By Category | 0 | - | 4.97 | 157,571 |
| Countries by Countries | 0 | - | 4.96 | 62,802 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,153 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,148 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,464 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,290 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,768 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,342 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,720 |
| Demonyms Quiz | 0 | - | 4.15 | 185,077 |
| Airports Named for People #2 | 0 | - | 4.23 | 15,408 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,384 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,998 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,050 |
| Longest International Borders | 0 | - | 4.99 | 264,606 |
| Countries with Three Borders | 0 | - | 4.96 | 36,439 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,898 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,992 |
| Demonym of Every Country | 0 | - | 4.91 | 59,120 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,686 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,274 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,500 |
| Island Countries | 0 | - | 4.99 | 709,604 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,698 |
| Northernmost Countries | 0 | - | 4.99 | 360,331 |
| Countries of South America | 0 | - | 5.00 | 922,500 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,477 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,429 |
| "Land" Countries | 0 | - | 4.98 | 335,713 |
| World's Biggest Airlines | 0 | - | 4.42 | 124,803 |
| Airline Logos | 0 | - | 4.45 | 140,507 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,969 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,876 |
| All Country Flags of the World | 0 | - | 5.00 | 3,647,010 |
| Foods of the World by Description | 0 | - | 4.18 | 46,003 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,330 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,279 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,124 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 47,652 |
| "Second Best" Geography Edition #1 | 0 | - | 4.61 | 63,330 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,840 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,604 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,908 |
| Countries with Megacities | 0 | - | 4.99 | 257,193 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,772 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,923 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,067 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,929 |
| Biggest Cities in the World | 0 | - | 4.91 | 796,373 |
| Cities by Tourist Attraction #1 | 0 | - | 3.63 | 81,089 |
| Cities by Famous Street | 0 | - | 3.96 | 48,304 |
| Cities by Tourist Attraction #2 | 0 | - | 3.73 | 32,111 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,819 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,908 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,218 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,246 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,921 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,561 |
| Countries by Capital City | 0 | - | 5.00 | 67,875 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,947 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,439 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,557 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,933 |
| Moved Capital Cities | 0 | - | 4.96 | 74,027 |
| Countries by Official Language | 0 | - | 4.95 | 194,582 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,456 |
| Countries in their Native Language | 0 | - | 4.99 | 198,127 |
| Independence from Whom | 0 | - | 4.99 | 211,234 |
| Subdivisions by Country | 0 | - | 4.86 | 50,273 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,642 |
| Megadiverse Countries | 0 | - | 4.96 | 134,744 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,500 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,162 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,732 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,672 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,359 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,919 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,821 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,467 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,973 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,888 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,693 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,970 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,756 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,121 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,307 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,105 |
| World Map Quiz | 0 | - | 4.81 | 64,462 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,449 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,001 |
| Countries by Founding Story | 0 | - | 4.95 | 77,035 |
| Countries by Road Signs | 0 | - | 4.98 | 53,625 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,437 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,893 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,601 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,256 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,485 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,647 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,797 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,246 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,256 |
| Widest Countries East to West | 0 | - | 4.92 | 129,338 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,376 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,921 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,983 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,487 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,179 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,515 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,222 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,723 |
| Airlines by Country | 0 | - | 4.52 | 135,215 |
| Countries with Double Letters | 0 | - | 4.97 | 95,032 |
| Countries that End in N | 0 | - | 4.95 | 169,881 |
| Countries with Five Letters | 0 | - | 4.96 | 279,789 |
| Countries with Six Letters | 0 | - | 4.94 | 212,411 |
