| Airport Codes Quiz #1 | 0 | - | 4.81 | 216,134 |
| Busiest Airports in Europe | 0 | - | 4.91 | 146,823 |
| World's Busiest Airports | 0 | - | 4.96 | 236,286 |
| Countries with the Most Airports | 0 | - | 4.96 | 99,899 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,748,481 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,677 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,674 |
| Top World Languages | 0 | - | 4.92 | 827,502 |
| Busiest Airports in the United States | 0 | - | 4.54 | 136,002 |
| Airport Codes Quiz #2 | 0 | - | 4.39 | 97,563 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,981 |
| Cities by Airports | 0 | - | 4.47 | 103,788 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 136,510 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 126,437 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 122,724 |
| Busiest Air Routes in the World | 0 | - | 4.54 | 38,512 |
| Airports Named for People #1 | 0 | - | 4.44 | 56,074 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 72,836 |
| World Currency Quiz | 0 | - | 4.92 | 305,645 |
| Boundary Waters | 0 | - | 4.92 | 88,685 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,345 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,504 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,547 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,440 |
| Largest Countries with Little Tourism | 0 | - | 4.70 | 62,033 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,423 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,871 |
| Places in their Native Language #2 | 0 | - | 4.80 | 134,806 |
| Tourist Route of Europe | 0 | - | 4.24 | 42,955 |
| Landlocked Countries | 0 | - | 4.99 | 424,052 |
| U.S. National Parks Map Quiz | 0 | - | 4.48 | 56,061 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,827 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,741 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,757 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 100,842 |
| World Capitals Quiz | 0 | - | 5.00 | 5,096,198 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,436 |
| Himalayan Countries | 0 | - | 4.94 | 139,607 |
| Andean Countries | 0 | - | 4.94 | 85,097 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,289 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,519 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,853 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,150 |
| Danube Countries | 0 | - | 4.97 | 72,231 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,342 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,653 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,755 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,254 |
| European Landlocked Countries | 0 | - | 4.99 | 147,405 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,012 |
| Countries with the Most Species | 0 | - | 4.99 | 103,438 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,134 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,691 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,802 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,714 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,445 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,861 |
| Countries in the Alps | 0 | - | 4.87 | 118,510 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 82,232 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,147 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,493 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,825 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,830 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,760 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,106 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,947 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,693 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,315 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,029 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,770 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,638 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,403 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,646 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,739 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,410 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,484 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,346 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,415 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,002 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,717 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,394 |
| Largest Countries By Category | 0 | - | 4.97 | 158,574 |
| Countries by Countries | 0 | - | 4.96 | 63,457 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,355 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,927 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,431 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,289 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,936 |
| Demonyms Quiz | 0 | - | 4.15 | 185,453 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,578 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,623 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,450 |
| Longest International Borders | 0 | - | 4.99 | 265,551 |
| Countries with Three Borders | 0 | - | 4.96 | 36,698 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,266 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,394 |
| Demonym of Every Country | 0 | - | 4.90 | 61,198 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,428 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,780 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,171 |
| Island Countries | 0 | - | 4.99 | 711,866 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,723 |
| Northernmost Countries | 0 | - | 4.99 | 363,199 |
| Countries of South America | 0 | - | 5.00 | 930,226 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,588 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,031 |
| "Land" Countries | 0 | - | 4.98 | 337,938 |
| World's Biggest Airlines | 0 | - | 4.42 | 125,884 |
| Airline Logos | 0 | - | 4.45 | 141,244 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,289 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,472 |
| All Country Flags of the World | 0 | - | 5.00 | 3,699,120 |
| Foods of the World by Description | 0 | - | 4.18 | 46,092 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,660 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,356 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,550 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,816 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,492 |
| Countries with Megacities | 0 | - | 4.99 | 265,973 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,286 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,767 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,536 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,886 |
| Biggest Cities in the World | 0 | - | 4.92 | 803,663 |
| Cities by Tourist Attraction #1 | 0 | - | 3.63 | 81,166 |
| Cities by Famous Street | 0 | - | 3.96 | 48,370 |
| Cities by Tourist Attraction #2 | 0 | - | 3.73 | 32,172 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,000 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,923 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,808 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,992 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,934 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,810 |
| Countries by Capital City | 0 | - | 5.00 | 69,091 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,661 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,062 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,136 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,636 |
| Moved Capital Cities | 0 | - | 4.96 | 74,526 |
| Countries by Official Language | 0 | - | 4.95 | 195,683 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,181 |
| Countries in their Native Language | 0 | - | 4.99 | 199,457 |
| Independence from Whom | 0 | - | 4.99 | 212,641 |
| Subdivisions by Country | 0 | - | 4.87 | 50,543 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,135 |
| Megadiverse Countries | 0 | - | 4.96 | 135,164 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,472 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,357 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,168 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,390 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,714 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,812 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,477 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,754 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,212 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,122 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,279 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,344 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,068 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,486 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,612 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,890 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,542 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,864 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,731 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,381 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,055 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,229 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,357 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,557 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,596 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,548 |
| Widest Countries East to West | 0 | - | 4.92 | 130,249 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,544 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,051 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,449 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,947 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,823 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,299 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,454 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,857 |
| Airlines by Country | 0 | - | 4.52 | 135,699 |
| Countries with Double Letters | 0 | - | 4.96 | 96,721 |
| Countries that End in N | 0 | - | 4.95 | 171,606 |
| Countries with Five Letters | 0 | - | 4.96 | 283,270 |
| Countries with Six Letters | 0 | - | 4.94 | 214,062 |
| Countries with W | 0 | - | 4.96 | 160,674 |
| Countries with Z | 0 | - | 4.98 | 292,018 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,040 |
| Countries That End in U | 0 | - | 4.95 | 121,043 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,828 |
| Countries that End in O | 0 | - | 4.92 | 159,686 |
| Countries that End in R | 0 | - | 4.87 | 119,082 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,840 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,508 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,956 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,672 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,596 |
| Countries That End in Y | 0 | - | 4.91 | 186,009 |
