| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,408 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,816,329 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,216,223 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,542 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,350 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,589 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,349 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,936 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,277 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,328 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,008 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 136,673 |
| Countries with Four Letters | 0 | - | 4.99 | 420,792 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,843 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,969 |
| Landlocked Countries | 0 | - | 4.99 | 417,311 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,165 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,441 |
| Country Chain | 0 | - | 4.96 | 216,544 |
| Countries by Emojis | 0 | - | 4.99 | 238,054 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,518 |
| Pixelated World Map | 0 | - | 5.00 | 142,963 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,048 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,276 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,181 |
| Islands by Country #1 | 0 | - | 4.87 | 174,905 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,223 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,576 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,543 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,745,656 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,364 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,741 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,959 |
| Name a Valid Country #1 | 0 | - | 4.99 | 287,520 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,397 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,338 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,496 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,531 |
| Name a Valid Country #7 | 0 | - | 4.91 | 128,438 |
| Name a Valid Country #8 | 0 | - | 4.85 | 97,812 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 717,114 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,233 |
| Himalayan Countries | 0 | - | 4.95 | 136,774 |
| Andean Countries | 0 | - | 4.95 | 83,609 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,870 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,170 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,539 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,133 |
| Danube Countries | 0 | - | 4.97 | 71,488 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,316 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,909 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,312 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,306 |
| European Landlocked Countries | 0 | - | 4.99 | 146,199 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,887 |
| Countries with the Most Species | 0 | - | 4.99 | 102,416 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,015 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,357 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,537 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,205 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,859 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,238 |
| Countries in the Alps | 0 | - | 4.86 | 117,440 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,968 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,051 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,305 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,811 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,906 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,324 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,077 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,048 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,864 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,397 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,401 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,243 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,791 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,055 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,067 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,854 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,943 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,472 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,311 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,402 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,761 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,879 |
| Largest Countries By Category | 0 | - | 4.97 | 157,363 |
| Countries by Countries | 0 | - | 4.96 | 62,676 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,961 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,109 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,423 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,978 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,466 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,152 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,604 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,122 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,261 |
| Island Countries | 0 | - | 4.99 | 709,110 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,206 |
| Northernmost Countries | 0 | - | 4.99 | 359,742 |
| Countries of South America | 0 | - | 5.00 | 920,609 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,253 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,861,077 |
| "Land" Countries | 0 | - | 4.98 | 335,229 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,028 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,776 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,794 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,535 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,173 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,146 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,796 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,290 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,968 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,956 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,050 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,393 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,252 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,481 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,515 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 78,449 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,884 |
| Random Countries by Borders | 0 | - | 4.99 | 82,098 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,308 |
| Name a Valid Island Country | 0 | - | 4.96 | 114,572 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,507 |
| Countries with Megacities | 0 | - | 4.99 | 249,454 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,355 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,678 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,687 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,646 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,020 |
| Countries by Official Language | 0 | - | 4.95 | 194,262 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,083 |
| Countries in their Native Language | 0 | - | 4.99 | 197,854 |
| Independence from Whom | 0 | - | 4.99 | 210,985 |
| Subdivisions by Country | 0 | - | 4.86 | 50,227 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,457 |
| Megadiverse Countries | 0 | - | 4.96 | 134,609 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,015 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,109 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,666 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,965 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,517 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,278 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,712 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,607 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,411 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,822 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,487 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,624 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,718 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,686 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,894 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,252 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,191 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,759 |
| World Map Quiz | 0 | - | 4.81 | 64,233 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,741 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,781 |
| Countries by Founding Story | 0 | - | 4.95 | 76,938 |
| Countries by Road Signs | 0 | - | 4.98 | 53,489 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,192 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,745 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,479 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,904 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,354 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,525 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,692 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,186 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,158 |
| Widest Countries East to West | 0 | - | 4.92 | 129,228 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,343 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,744 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,947 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,038 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,051 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,423 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,162 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,691 |
| Countries with Double Letters | 0 | - | 4.97 | 94,631 |
| Countries that End in N | 0 | - | 4.95 | 168,776 |
| Countries with Five Letters | 0 | - | 4.96 | 273,945 |
| Countries with Six Letters | 0 | - | 4.94 | 211,910 |
| Countries with W | 0 | - | 4.97 | 159,190 |
| Countries with Z | 0 | - | 4.98 | 289,303 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,388 |
| Countries That End in U | 0 | - | 4.95 | 120,222 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,412 |
| Countries that End in O | 0 | - | 4.92 | 159,042 |
| Countries that End in R | 0 | - | 4.87 | 118,617 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,391 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,984 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,889 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,919 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,503 |
| Countries That End in Y | 0 | - | 4.90 | 185,526 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,981 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,200 |
| Countries that End in I | 0 | - | 4.94 | 134,735 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,812 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,466 |
