| Busiest Airports in Europe | 0 | - | 4.91 | 147,239 |
| World's Busiest Airports | 0 | - | 4.96 | 238,034 |
| Countries with the Most Airports | 0 | - | 4.96 | 100,481 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,979,378 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,895 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,440 |
| Top World Languages | 0 | - | 4.92 | 831,426 |
| Busiest Airports in the United States | 0 | - | 4.54 | 136,276 |
| Airport Codes Quiz #2 | 0 | - | 4.39 | 97,993 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,644 |
| Cities by Airports | 0 | - | 4.48 | 104,165 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 137,049 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 127,113 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 123,710 |
| Busiest Air Routes in the World | 0 | - | 4.54 | 38,626 |
| Airports Named for People #1 | 0 | - | 4.44 | 56,151 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.95 | 73,152 |
| World Currency Quiz | 0 | - | 4.92 | 307,627 |
| Boundary Waters | 0 | - | 4.92 | 88,846 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,472 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,855 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,809 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,548 |
| Largest Countries with Little Tourism | 0 | - | 4.70 | 62,216 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,638 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 119,260 |
| 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 | 427,368 |
| 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 | 125,200 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 101,008 |
| World Capitals Quiz | 0 | - | 5.00 | 5,114,665 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,976 |
| Himalayan Countries | 0 | - | 4.93 | 140,874 |
| Andean Countries | 0 | - | 4.94 | 85,828 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,943 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,520 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,484 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,707 |
| Danube Countries | 0 | - | 4.97 | 72,570 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,816 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,985 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,467 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,943 |
| European Landlocked Countries | 0 | - | 4.99 | 147,781 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,555 |
| Countries with the Most Species | 0 | - | 4.99 | 103,655 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,656 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,817 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,960 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,932 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,685 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,144 |
| Countries in the Alps | 0 | - | 4.87 | 119,000 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 82,358 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,036 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,168 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,070 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,188 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,143 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,400 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,611 |
| 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 | 53,960 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,834 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,683 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,936 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,034 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,170 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,746 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,545 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,855 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,380 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,531 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,623 |
| Largest Countries By Category | 0 | - | 4.97 | 159,115 |
| Countries by Countries | 0 | - | 4.97 | 63,819 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,451 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,241 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,813,323 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,593 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,029 |
| Demonyms Quiz | 0 | - | 4.15 | 185,607 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,659 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,444 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,669 |
| Longest International Borders | 0 | - | 4.99 | 266,018 |
| Countries with Three Borders | 0 | - | 4.96 | 36,837 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,430 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,576 |
| Demonym of Every Country | 0 | - | 4.90 | 61,652 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,731 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,602,540 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,078 |
| Island Countries | 0 | - | 4.99 | 713,053 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,310 |
| Northernmost Countries | 0 | - | 4.99 | 364,655 |
| Countries of South America | 0 | - | 5.00 | 934,468 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,721 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,473 |
| "Land" Countries | 0 | - | 4.98 | 339,057 |
| World's Biggest Airlines | 0 | - | 4.42 | 126,415 |
| Airline Logos | 0 | - | 4.45 | 141,586 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,480 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,615 |
| All Country Flags of the World | 0 | - | 5.00 | 3,725,691 |
| Foods of the World by Description | 0 | - | 4.18 | 46,166 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,781 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,408 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,241 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,032 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,536 |
| Countries with Megacities | 0 | - | 4.99 | 267,941 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,191 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,353 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,511 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,459 |
| Biggest Cities in the World | 0 | - | 4.91 | 807,128 |
| 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 | 137,534 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,575 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,089 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,361 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,459 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,408 |
| Countries by Capital City | 0 | - | 5.00 | 69,651 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,180 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,369 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,497 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,974 |
| Moved Capital Cities | 0 | - | 4.96 | 74,742 |
| Countries by Official Language | 0 | - | 4.95 | 196,251 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,985 |
| Countries in their Native Language | 0 | - | 4.99 | 199,976 |
| Independence from Whom | 0 | - | 4.99 | 213,437 |
| Subdivisions by Country | 0 | - | 4.87 | 50,673 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,688 |
| Megadiverse Countries | 0 | - | 4.96 | 149,342 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,156 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,587 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,819 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,263 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,492 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,928 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,300 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,634 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,176 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,811 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,499 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,514 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,225 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,649 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,983 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,775 |
| World Map Quiz | 0 | - | 4.81 | 65,936 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,828 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,547 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,248 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,720 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,969 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,571 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,682 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,871 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,771 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,964 |
| Widest Countries East to West | 0 | - | 4.92 | 130,868 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,633 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,418 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,570 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,171 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,131 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,625 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,542 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,924 |
| Airlines by Country | 0 | - | 4.52 | 135,946 |
| Countries with Double Letters | 0 | - | 4.96 | 97,674 |
| Countries that End in N | 0 | - | 4.95 | 172,670 |
| Countries with Five Letters | 0 | - | 4.96 | 284,706 |
| Countries with Six Letters | 0 | - | 4.94 | 215,005 |
| Countries with W | 0 | - | 4.96 | 161,346 |
| Countries with Z | 0 | - | 4.98 | 293,065 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,718 |
| Countries That End in U | 0 | - | 4.95 | 121,405 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,464 |
| Countries that End in O | 0 | - | 4.92 | 160,386 |
| Countries that End in R | 0 | - | 4.87 | 119,290 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,070 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,186 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 186,552 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,231 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,861 |
| Countries That End in Y | 0 | - | 4.91 | 186,182 |
