| Countries of the World Quiz | 0 | - | 5.00 | 46,923,598 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,872 |
| Top World Languages | 0 | - | 4.92 | 813,209 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,149 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,333 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,478 |
| Places in their Native Language #2 | 0 | - | 4.85 | 122,980 |
| Busiest Airports in Europe | 0 | - | 4.91 | 144,908 |
| World's Busiest Airports | 0 | - | 4.94 | 210,460 |
| One Border Countries | 0 | - | 4.98 | 464,406 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,231 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,801,294 |
| U.S. National Parks Map Quiz | 0 | - | 4.48 | 55,694 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 134,286 |
| Countries with the Most Airports | 0 | - | 4.96 | 97,139 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 123,881 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 119,028 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,608 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,555 |
| Longest Border by Country #1 | 0 | - | 4.99 | 145,291 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,005 |
| Countries with Two Borders | 0 | - | 4.99 | 147,010 |
| Countries by Borders #2 | 0 | - | 4.96 | 135,456 |
| Landlocked Countries that Border Each Other | 0 | - | 5.00 | 140,274 |
| Big Countries Bordering Small Countries | 0 | - | 4.99 | 130,220 |
| Largest Countries Bordering Each Other | 0 | - | 4.99 | 114,711 |
| Biggest Countries Bordering the Pacific Ocean | 0 | - | 4.91 | 93,178 |
| Countries by Borders #3 | 0 | - | 4.98 | 97,521 |
| Bordering Countries Forming Words #1 | 0 | - | 4.92 | 75,563 |
| Bordering Countries Forming Words #2 | 0 | - | 4.97 | 32,588 |
| Longest Border by Country #2 | 0 | - | 4.95 | 120,426 |
| Airport Codes Quiz #1 | 0 | - | 4.82 | 213,079 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,815 |
| Busiest Air Routes in the World | 0 | - | 4.54 | 37,959 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,152 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,347 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,943 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,604 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 71,595 |
| Countries with the Shortest Total Borders | 0 | - | 4.94 | 103,122 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 138,902 |
| Bordering Countries by HDI Difference | 0 | - | 4.90 | 51,675 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,357 |
| World Currency Quiz | 0 | - | 4.92 | 298,526 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,389 |
| Boundary Waters | 0 | - | 4.92 | 88,046 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,818 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,292 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,939 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 220,012 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 53,788 |
| Largest Countries with Little Tourism | 0 | - | 4.74 | 61,261 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,606 |
| Bordering Countries by Clue #1 | 0 | - | 4.97 | 82,680 |
| Bordering Countries by Clue #2 | 0 | - | 4.95 | 86,632 |
| Walking Across Borders with Hints #1 | 0 | - | 4.95 | 107,193 |
| Random Countries by Borders | 0 | - | 4.99 | 81,681 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,477 |
| Tourist Route of Europe | 0 | - | 4.24 | 42,780 |
| Busiest Airports in the United States | 0 | - | 4.54 | 134,774 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,962 |
| Cities by Airports | 0 | - | 4.49 | 87,864 |
| Landlocked Countries | 0 | - | 4.99 | 413,660 |
| Smallest Countries Bordering Each Other | 0 | - | 4.63 | 92,322 |
| Airport Codes Quiz #2 | 0 | - | 4.41 | 96,200 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,009 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,162 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,635 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,004 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 100,133 |
| World Capitals Quiz | 0 | - | 5.00 | 5,031,877 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,608 |
| Himalayan Countries | 0 | - | 4.95 | 135,377 |
| Andean Countries | 0 | - | 4.94 | 82,830 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,222 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,221 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,908 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,614 |
| Danube Countries | 0 | - | 4.97 | 71,083 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,769 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,539 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,493 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,409 |
| European Landlocked Countries | 0 | - | 4.99 | 145,758 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,218 |
| Countries with the Most Species | 0 | - | 4.99 | 95,242 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,352 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,200 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,370 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,959 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,579 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,953 |
| Countries in the Alps | 0 | - | 4.86 | 116,826 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 81,814 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,571 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,260 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,015 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,426 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,168 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,006 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,582 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,760 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,305 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,063 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,197 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,045 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,454 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,752 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,755 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,072 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,649 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,255 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,774 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,321 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,682 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,605 |
| Largest Countries By Category | 0 | - | 4.97 | 156,763 |
| Countries by Countries | 0 | - | 4.96 | 62,257 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,772 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,717,200 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,714 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,487 |
| Demonyms Quiz | 0 | - | 4.15 | 184,840 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,239 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,425 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,621 |
| Longest International Borders | 0 | - | 4.99 | 263,547 |
| Countries with Three Borders | 0 | - | 4.96 | 36,180 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,601 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,674 |
| Demonym of Every Country | 0 | - | 4.91 | 58,645 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,011 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,571,221 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,134 |
| Island Countries | 0 | - | 4.99 | 707,640 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,499 |
| Northernmost Countries | 0 | - | 4.99 | 357,750 |
| Countries of South America | 0 | - | 5.00 | 914,849 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,558 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,513 |
| "Land" Countries | 0 | - | 4.98 | 333,665 |
| Which Country Does Not Border... | 0 | - | 4.78 | 93,058 |
| Airports Named for People #1 | 0 | - | 4.46 | 55,689 |
| World's Biggest Airlines | 0 | - | 4.44 | 123,874 |
| Airline Logos | 0 | - | 4.45 | 139,960 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,438 |
| Countries Bordering Two or More Oceans | 0 | - | 4.22 | 122,383 |
| Borders of One Border Countries | 0 | - | 4.14 | 85,948 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,702 |
| All Country Flags of the World | 0 | - | 5.00 | 3,602,691 |
| Foods of the World by Description | 0 | - | 4.18 | 45,936 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,164 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,215 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,154 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,663 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,250 |
| Countries with Megacities | 0 | - | 4.99 | 246,956 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,141 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,986 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,557 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,881 |
| Biggest Cities in the World | 0 | - | 4.92 | 790,483 |
| Cities by Tourist Attraction #1 | 0 | - | 3.63 | 81,027 |
| Cities by Famous Street | 0 | - | 3.96 | 48,246 |
| Cities by Tourist Attraction #2 | 0 | - | 3.73 | 32,067 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,779 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,962 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,657 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,610 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,640 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,459 |
| Countries by Capital City | 0 | - | 5.00 | 66,670 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,339 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,912 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,443 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,413 |
| Moved Capital Cities | 0 | - | 4.96 | 73,591 |
| Countries by Official Language | 0 | - | 4.95 | 192,777 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,143 |
| Countries in their Native Language | 0 | - | 4.99 | 196,643 |
| Independence from Whom | 0 | - | 4.99 | 209,700 |
| Subdivisions by Country | 0 | - | 4.86 | 50,068 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,759 |
| Megadiverse Countries | 0 | - | 4.97 | 133,906 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,809 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,920 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,429 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,862 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,668 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,001 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,026 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,215 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,746 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,577 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,422 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,496 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,505 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,677 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,030 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,602 |
