| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,636,959 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,837,807 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,645,303 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,106,933 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,876 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,704 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,186 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,949 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,370 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,942 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,466 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 138,853 |
| Countries with Four Letters | 0 | - | 4.99 | 423,745 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,158 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,074 |
| Landlocked Countries | 0 | - | 4.99 | 422,772 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,276 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,587 |
| Country Chain | 0 | - | 4.96 | 217,767 |
| Countries by Emojis | 0 | - | 4.99 | 240,671 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,196 |
| Pixelated World Map | 0 | - | 5.00 | 143,727 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 322,104 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,126 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,635 |
| Islands by Country #1 | 0 | - | 4.90 | 175,644 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,801 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,171 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,923 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,784,283 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 217,668 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,438 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,878 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,778 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,750 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,898 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,888 |
| Name a Valid Country #6 | 0 | - | 4.94 | 130,132 |
| Name a Valid Country #7 | 0 | - | 4.91 | 129,861 |
| Name a Valid Country #8 | 0 | - | 4.86 | 99,231 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 729,765 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,912 |
| Himalayan Countries | 0 | - | 4.95 | 139,083 |
| Andean Countries | 0 | - | 4.93 | 84,827 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,056 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,156 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,633 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,947 |
| Danube Countries | 0 | - | 4.97 | 72,113 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,155 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,518 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,484 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,983 |
| European Landlocked Countries | 0 | - | 4.99 | 147,246 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,798 |
| Countries with the Most Species | 0 | - | 4.99 | 103,324 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,920 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,638 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,757 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,604 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,336 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,755 |
| Countries in the Alps | 0 | - | 4.87 | 118,330 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,630 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,228 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,732 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,688 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,607 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,013 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,771 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,580 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,231 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,938 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,701 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,578 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,308 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,548 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,612 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,093 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,378 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,582 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,225 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,371 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,368 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,296 |
| Largest Countries By Category | 0 | - | 4.97 | 158,361 |
| Countries by Countries | 0 | - | 4.96 | 63,332 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,796 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,314 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,588 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,105 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,761 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,322 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,746 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,817 |
| Island Countries | 0 | - | 4.99 | 711,324 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,894 |
| Northernmost Countries | 0 | - | 4.99 | 362,350 |
| Countries of South America | 0 | - | 5.00 | 928,489 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,340 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,723 |
| "Land" Countries | 0 | - | 4.98 | 337,568 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,273 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,417 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,346 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,900 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,650 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,669 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,269 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,026 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,395 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,958 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,010 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,821 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,274 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 140,408 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,981 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 80,363 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,299 |
| Random Countries by Borders | 0 | - | 4.99 | 82,735 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,575 |
| Name a Valid Island Country | 0 | - | 4.96 | 115,199 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,135 |
| Countries with Megacities | 0 | - | 4.99 | 265,133 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,954 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,603 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,215 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,673 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,570 |
| Countries by Official Language | 0 | - | 4.95 | 195,416 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,601 |
| Countries in their Native Language | 0 | - | 4.99 | 199,198 |
| Independence from Whom | 0 | - | 4.99 | 212,290 |
| Subdivisions by Country | 0 | - | 4.87 | 50,467 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,868 |
| Megadiverse Countries | 0 | - | 4.96 | 135,078 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,225 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,397 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,275 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,135 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,232 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,644 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,576 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,376 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,699 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,174 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,856 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,933 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,250 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,005 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,401 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,536 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,766 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,451 |
| World Map Quiz | 0 | - | 4.81 | 65,202 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,703 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,427 |
| Countries by Founding Story | 0 | - | 4.95 | 77,440 |
| Countries by Road Signs | 0 | - | 4.98 | 54,089 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,256 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,370 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,083 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,474 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,984 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,090 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,372 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,486 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,630 |
| Widest Countries East to West | 0 | - | 4.92 | 129,727 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,475 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,477 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,152 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,821 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,666 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,945 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,401 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,815 |
| Countries with Double Letters | 0 | - | 4.96 | 96,417 |
| Countries that End in N | 0 | - | 4.95 | 171,299 |
| Countries with Five Letters | 0 | - | 4.96 | 282,808 |
| Countries with Six Letters | 0 | - | 4.94 | 213,749 |
| Countries with W | 0 | - | 4.97 | 160,457 |
| Countries with Z | 0 | - | 4.98 | 291,661 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,827 |
| Countries That End in U | 0 | - | 4.95 | 120,914 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,587 |
| Countries that End in O | 0 | - | 4.92 | 159,570 |
| Countries that End in R | 0 | - | 4.87 | 119,006 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,768 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,262 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,776 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,547 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,463 |
| Countries That End in Y | 0 | - | 4.91 | 185,927 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,027 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,947 |
| Countries that End in I | 0 | - | 4.94 | 135,145 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,206 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,864 |
| Countries That End in NIA | 0 | - | 4.92 | 109,843 |
