| Busiest Airports in Europe | 0 | - | 4.91 | 147,236 |
| World's Busiest Airports | 0 | - | 4.96 | 238,025 |
| Countries with the Most Airports | 0 | - | 4.96 | 100,478 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,977,652 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,893 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,430 |
| Top World Languages | 0 | - | 4.92 | 831,400 |
| Busiest Airports in the United States | 0 | - | 4.54 | 136,270 |
| Airport Codes Quiz #2 | 0 | - | 4.39 | 97,985 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,639 |
| Cities by Airports | 0 | - | 4.48 | 104,164 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 137,045 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 127,110 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 123,698 |
| Busiest Air Routes in the World | 0 | - | 4.54 | 38,625 |
| Airports Named for People #1 | 0 | - | 4.44 | 56,151 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.95 | 73,146 |
| World Currency Quiz | 0 | - | 4.92 | 307,609 |
| Boundary Waters | 0 | - | 4.92 | 88,842 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,472 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,851 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,807 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,548 |
| Largest Countries with Little Tourism | 0 | - | 4.70 | 62,215 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,638 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 119,258 |
| Places in their Native Language #2 | 0 | - | 4.80 | 135,085 |
| Tourist Route of Europe | 0 | - | 4.24 | 42,988 |
| Landlocked Countries | 0 | - | 4.99 | 427,338 |
| U.S. National Parks Map Quiz | 0 | - | 4.48 | 56,134 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,997 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,179 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,199 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 101,006 |
| World Capitals Quiz | 0 | - | 5.00 | 5,114,514 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,961 |
| Himalayan Countries | 0 | - | 4.93 | 140,865 |
| Andean Countries | 0 | - | 4.94 | 85,824 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,933 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,513 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,478 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,704 |
| Danube Countries | 0 | - | 4.97 | 72,565 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,809 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,980 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,464 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,938 |
| European Landlocked Countries | 0 | - | 4.99 | 147,775 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,552 |
| Countries with the Most Species | 0 | - | 4.99 | 103,654 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,654 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,817 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,959 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,931 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,685 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,141 |
| Countries in the Alps | 0 | - | 4.87 | 118,996 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 82,357 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,025 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,157 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,066 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,186 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,138 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,399 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,608 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,003 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,518 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,322 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,957 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,834 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,682 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,935 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,029 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,166 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,746 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,532 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,850 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,366 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,523 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,621 |
| Largest Countries By Category | 0 | - | 4.97 | 159,111 |
| Countries by Countries | 0 | - | 4.97 | 63,815 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,451 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,238 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,813,168 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,590 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,029 |
| Demonyms Quiz | 0 | - | 4.15 | 185,606 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,659 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,434 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,665 |
| Longest International Borders | 0 | - | 4.99 | 266,014 |
| Countries with Three Borders | 0 | - | 4.96 | 36,836 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,430 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,575 |
| Demonym of Every Country | 0 | - | 4.90 | 61,647 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,707 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,602,502 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,074 |
| Island Countries | 0 | - | 4.99 | 713,043 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,291 |
| Northernmost Countries | 0 | - | 4.99 | 364,646 |
| Countries of South America | 0 | - | 5.00 | 934,439 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,697 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,382 |
| "Land" Countries | 0 | - | 4.98 | 339,045 |
| World's Biggest Airlines | 0 | - | 4.42 | 126,413 |
| Airline Logos | 0 | - | 4.45 | 141,583 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,424 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,527 |
| All Country Flags of the World | 0 | - | 5.00 | 3,725,517 |
| Foods of the World by Description | 0 | - | 4.18 | 46,166 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,780 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,408 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,207 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,021 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,530 |
| Countries with Megacities | 0 | - | 4.99 | 267,927 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,183 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,351 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,506 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,457 |
| Biggest Cities in the World | 0 | - | 4.91 | 807,105 |
| Cities by Tourist Attraction #1 | 0 | - | 3.63 | 81,190 |
| Cities by Famous Street | 0 | - | 3.96 | 48,390 |
| Cities by Tourist Attraction #2 | 0 | - | 3.73 | 32,194 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,532 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,570 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,089 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,358 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,453 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,406 |
| Countries by Capital City | 0 | - | 5.00 | 69,647 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,177 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,367 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,484 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,970 |
| Moved Capital Cities | 0 | - | 4.96 | 74,741 |
| Countries by Official Language | 0 | - | 4.95 | 196,242 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,974 |
| Countries in their Native Language | 0 | - | 4.99 | 199,972 |
| Independence from Whom | 0 | - | 4.99 | 213,432 |
| Subdivisions by Country | 0 | - | 4.87 | 50,673 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,683 |
| Megadiverse Countries | 0 | - | 4.96 | 149,287 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,151 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,584 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,814 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,262 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,487 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,926 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,299 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,634 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,174 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,805 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,498 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,512 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,223 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,648 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,981 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,771 |
| World Map Quiz | 0 | - | 4.81 | 65,934 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,825 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,542 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,246 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,719 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,968 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,569 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,678 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,868 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,771 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,959 |
| Widest Countries East to West | 0 | - | 4.92 | 130,867 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,631 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,418 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,568 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,170 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,129 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,623 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,538 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,924 |
| Airlines by Country | 0 | - | 4.52 | 135,943 |
| Countries with Double Letters | 0 | - | 4.96 | 97,668 |
| Countries that End in N | 0 | - | 4.95 | 172,665 |
| Countries with Five Letters | 0 | - | 4.96 | 284,701 |
| Countries with Six Letters | 0 | - | 4.94 | 214,995 |
| Countries with W | 0 | - | 4.96 | 161,342 |
| Countries with Z | 0 | - | 4.98 | 293,052 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,709 |
| Countries That End in U | 0 | - | 4.95 | 121,402 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,461 |
| Countries that End in O | 0 | - | 4.92 | 160,385 |
| Countries that End in R | 0 | - | 4.87 | 119,288 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,068 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,180 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 186,442 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,228 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,850 |
| Countries That End in Y | 0 | - | 4.91 | 186,180 |
