| City to Country Quiz #1 | 0 | - | 4.97 | 156,163 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,098 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,144 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,737 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,644,350 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,747,628 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,641 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,306 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,779 |
| Historical City to Country | 0 | - | 4.85 | 78,778 |
| Landlocked Countries | 0 | - | 4.99 | 424,040 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 584,007 |
| Pixelated World Map | 0 | - | 5.00 | 143,887 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,345 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,611 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,756 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 53,914 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,367 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,607 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,433 |
| Himalayan Countries | 0 | - | 4.94 | 139,607 |
| Andean Countries | 0 | - | 4.94 | 85,094 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,289 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,517 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,848 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,149 |
| Danube Countries | 0 | - | 4.97 | 72,229 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,338 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,652 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,754 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,254 |
| European Landlocked Countries | 0 | - | 4.99 | 147,405 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,011 |
| Countries with the Most Species | 0 | - | 4.99 | 103,438 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,133 |
| 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 | 59,712 |
| 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 | 118,509 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,142 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,491 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,825 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,827 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,758 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,106 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,946 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,690 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,313 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,028 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,770 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,637 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,403 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,643 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,738 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,407 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,483 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,342 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,386 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,000 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,713 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,394 |
| Largest Countries By Category | 0 | - | 4.97 | 158,571 |
| Countries by Countries | 0 | - | 4.96 | 63,455 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,032 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,354 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,629 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,342 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,220 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,926 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,424 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,169 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,669 |
| Island Countries | 0 | - | 4.99 | 711,857 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,711 |
| Northernmost Countries | 0 | - | 4.99 | 363,193 |
| Countries of South America | 0 | - | 5.00 | 930,205 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,579 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,979 |
| "Land" Countries | 0 | - | 4.98 | 337,933 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,264 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,370 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,079 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,609 |
| City to Country Quiz #4 | 0 | - | 4.61 | 84,289 |
| City to Country Quiz #5 | 0 | - | 4.74 | 81,210 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,631 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,490 |
| Countries with Megacities | 0 | - | 4.99 | 265,967 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,286 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,766 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,535 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,886 |
| Countries by Official Language | 0 | - | 4.95 | 195,682 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,177 |
| Countries in their Native Language | 0 | - | 4.99 | 199,457 |
| Independence from Whom | 0 | - | 4.99 | 212,638 |
| Subdivisions by Country | 0 | - | 4.87 | 50,543 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,133 |
| Megadiverse Countries | 0 | - | 4.96 | 135,163 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,470 |
| 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 | 75,167 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,389 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,714 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,808 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,477 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,753 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,210 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,120 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,278 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,343 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,068 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,485 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,612 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,898 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,884 |
| World Map Quiz | 0 | - | 4.81 | 65,396 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,419 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,389 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,542 |
| Countries of the World With a Disappearing Map | 0 | - | 5.00 | 113,582 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,397 |
| Countries by Sports in 60 Seconds | 0 | - | 4.92 | 147,137 |
| Countries by Founding Story | 0 | - | 4.95 | 77,605 |
| Countries by Road Signs | 0 | - | 4.98 | 54,221 |
| Countries That Do Not Border | 0 | - | 4.99 | 60,688 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,851 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,728 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,379 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,050 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,227 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,355 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,556 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,596 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,521 |
| Widest Countries East to West | 0 | - | 4.92 | 130,245 |
| 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 | 98,448 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,946 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,821 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,288 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,454 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,855 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,110 |
| Countries with Double Letters | 0 | - | 4.96 | 96,720 |
| Countries that End in N | 0 | - | 4.95 | 171,605 |
| Countries with Five Letters | 0 | - | 4.96 | 283,265 |
| Countries with Six Letters | 0 | - | 4.94 | 214,061 |
| Countries with W | 0 | - | 4.96 | 160,672 |
| Countries with Z | 0 | - | 4.98 | 292,018 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,038 |
| Countries That End in U | 0 | - | 4.95 | 121,042 |
| 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 | 155,839 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,502 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,955 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,671 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,596 |
| Countries That End in Y | 0 | - | 4.91 | 186,009 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,221 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,096 |
| Countries that End in I | 0 | - | 4.94 | 135,224 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,408 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,949 |
| Countries That End in NIA | 0 | - | 4.92 | 109,937 |
| Countries That End in BIA | 0 | - | 4.93 | 149,418 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,353 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,644 |
| Countries That End in RIA | 0 | - | 4.93 | 126,953 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,236 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,149 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,977 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,415 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,965 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,703 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,208 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,738 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,558 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,534 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,224 |
| Countries with the Highest Scrabble Score | 0 | - | 4.97 | 63,865 |
| Countries that End in L | 0 | - | 4.94 | 157,008 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,809 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,309 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,146 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,940 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,316 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,079 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,753 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,073 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,177 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,763 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,135 |
