| Airport Codes Quiz #1 | 0 | - | 4.82 | 213,067 |
| Busiest Airports in Europe | 0 | - | 4.91 | 144,901 |
| World's Busiest Airports | 0 | - | 4.94 | 210,434 |
| Countries with the Most Airports | 0 | - | 4.96 | 97,124 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,919,533 |
| Airport Codes Quiz #2 | 0 | - | 4.41 | 96,192 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,556 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,844 |
| Top World Languages | 0 | - | 4.92 | 813,145 |
| Busiest Airports in the United States | 0 | - | 4.54 | 134,771 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,464 |
| Places in their Native Language #2 | 0 | - | 4.85 | 122,976 |
| Cities by Airports | 0 | - | 4.49 | 87,799 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 134,272 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 123,867 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 119,008 |
| Busiest Air Routes in the World | 0 | - | 4.54 | 37,959 |
| Airports Named for People #1 | 0 | - | 4.46 | 55,689 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 71,588 |
| World Currency Quiz | 0 | - | 4.92 | 298,482 |
| Boundary Waters | 0 | - | 4.92 | 88,043 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,816 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,286 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,008 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 53,786 |
| Largest Countries with Little Tourism | 0 | - | 4.74 | 61,259 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,603 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,474 |
| Tourist Route of Europe | 0 | - | 4.24 | 42,780 |
| Landlocked Countries | 0 | - | 4.99 | 413,608 |
| U.S. National Parks Map Quiz | 0 | - | 4.48 | 55,693 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,162 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,622 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,987 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 100,129 |
| World Capitals Quiz | 0 | - | 5.00 | 5,031,428 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,585 |
| Himalayan Countries | 0 | - | 4.95 | 135,347 |
| Andean Countries | 0 | - | 4.94 | 82,825 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,210 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,209 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,897 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,607 |
| Danube Countries | 0 | - | 4.97 | 71,080 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,763 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,538 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,478 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,396 |
| European Landlocked Countries | 0 | - | 4.99 | 145,751 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,213 |
| Countries with the Most Species | 0 | - | 4.99 | 95,241 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,339 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,197 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,370 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,957 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,576 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,952 |
| Countries in the Alps | 0 | - | 4.86 | 116,821 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 81,814 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,562 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,253 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,008 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,419 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,158 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,002 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,575 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,746 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,291 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,050 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,194 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,042 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,453 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,747 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,751 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,062 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,642 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,254 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,769 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,296 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,673 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,600 |
| Largest Countries By Category | 0 | - | 4.97 | 156,757 |
| Countries by Countries | 0 | - | 4.96 | 62,255 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,764 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,716,681 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,713 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,485 |
| Demonyms Quiz | 0 | - | 4.15 | 184,835 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,233 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,410 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,618 |
| Longest International Borders | 0 | - | 4.99 | 263,543 |
| Countries with Three Borders | 0 | - | 4.96 | 36,180 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,599 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,670 |
| Demonym of Every Country | 0 | - | 4.91 | 58,643 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,937 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,571,106 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,113 |
| Island Countries | 0 | - | 4.99 | 707,622 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,437 |
| Northernmost Countries | 0 | - | 4.99 | 357,721 |
| Countries of South America | 0 | - | 5.00 | 914,726 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,415 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,313 |
| "Land" Countries | 0 | - | 4.98 | 333,650 |
| World's Biggest Airlines | 0 | - | 4.44 | 123,867 |
| Airline Logos | 0 | - | 4.45 | 139,948 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,318 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,444 |
| All Country Flags of the World | 0 | - | 5.00 | 3,602,195 |
| Foods of the World by Description | 0 | - | 4.18 | 45,936 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,163 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,213 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,058 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,632 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,207 |
| Countries with Megacities | 0 | - | 4.99 | 246,895 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,112 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,963 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,524 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,852 |
| Biggest Cities in the World | 0 | - | 4.92 | 790,393 |
| Cities by Tourist Attraction #1 | 0 | - | 3.63 | 81,026 |
| Cities by Famous Street | 0 | - | 3.96 | 48,245 |
| Cities by Tourist Attraction #2 | 0 | - | 3.73 | 32,065 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,765 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,953 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,655 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,606 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,626 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,451 |
| Countries by Capital City | 0 | - | 5.00 | 66,657 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,336 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,906 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,411 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,409 |
| Moved Capital Cities | 0 | - | 4.96 | 73,587 |
| Countries by Official Language | 0 | - | 4.95 | 192,769 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,129 |
| Countries in their Native Language | 0 | - | 4.99 | 196,635 |
| Independence from Whom | 0 | - | 4.99 | 209,688 |
| Subdivisions by Country | 0 | - | 4.86 | 50,064 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,746 |
| Megadiverse Countries | 0 | - | 4.97 | 133,901 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,800 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,918 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,427 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,860 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,656 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,998 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,011 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,142 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,212 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,744 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,570 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,417 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,493 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,503 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,674 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,025 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,585 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,331 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,347 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,987 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,951 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,751 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,853 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,059 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,276 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,946 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,336 |
| Widest Countries East to West | 0 | - | 4.92 | 128,603 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,218 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,210 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,563 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,686 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,629 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,039 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,051 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,582 |
| Airlines by Country | 0 | - | 4.52 | 134,789 |
| Countries with Double Letters | 0 | - | 4.97 | 93,389 |
| Countries that End in N | 0 | - | 4.94 | 156,859 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,686 |
| Countries with Six Letters | 0 | - | 4.93 | 210,362 |
| Countries with W | 0 | - | 4.97 | 158,225 |
| Countries with Z | 0 | - | 4.98 | 287,875 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,550 |
| Countries That End in U | 0 | - | 4.95 | 119,517 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,550 |
| Countries that End in O | 0 | - | 4.92 | 158,553 |
| Countries that End in R | 0 | - | 4.87 | 118,274 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,857 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,020 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,326 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,493 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,015 |
| Countries That End in Y | 0 | - | 4.90 | 185,203 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,369 |
