| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,985 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,226,574 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,896 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,412 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,643 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,406 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,959 |
| Countries with Four Letters | 0 | - | 4.99 | 420,887 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,874 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,994 |
| Landlocked Countries | 0 | - | 4.99 | 417,424 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,192 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,465 |
| Country Chain | 0 | - | 4.96 | 216,571 |
| Countries by Emojis | 0 | - | 4.99 | 238,131 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,531 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,116 |
| Islands by Country #1 | 0 | - | 4.87 | 174,924 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,240 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,585 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,554 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,746,842 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,414 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,028 |
| Name a Valid Country #1 | 0 | - | 4.99 | 287,660 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,484 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,423 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,622 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,576 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 717,242 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,287 |
| Himalayan Countries | 0 | - | 4.95 | 136,810 |
| Andean Countries | 0 | - | 4.95 | 83,632 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,885 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,209 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,560 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,154 |
| Danube Countries | 0 | - | 4.97 | 71,505 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,335 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,921 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,337 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,376 |
| European Landlocked Countries | 0 | - | 4.99 | 146,216 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,908 |
| Countries with the Most Species | 0 | - | 4.99 | 102,499 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,033 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,363 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,540 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,212 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,868 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,250 |
| Countries in the Alps | 0 | - | 4.86 | 117,458 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,980 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,077 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,320 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,828 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,923 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,335 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,093 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,056 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,873 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,413 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,412 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,252 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,803 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,071 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,081 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,882 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,955 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,481 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,327 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,503 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,816 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,885 |
| Largest Countries By Category | 0 | - | 4.97 | 157,391 |
| Countries by Countries | 0 | - | 4.96 | 62,688 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,980 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,114 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,432 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,172 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,720 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,178 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,329 |
| Island Countries | 0 | - | 4.99 | 709,171 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,389 |
| Northernmost Countries | 0 | - | 4.99 | 359,814 |
| Countries of South America | 0 | - | 5.00 | 920,823 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,553 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,861,564 |
| "Land" Countries | 0 | - | 4.98 | 335,312 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,179 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,797 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,812 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,543 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,189 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,449 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,308 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,974 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,005 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,097 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,437 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,284 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,537 |
| Fictional Characters by Country #1 | 0 | - | 4.31 | 59,540 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,891 |
| Random Countries by Borders | 0 | - | 4.99 | 82,122 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,346 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,548 |
| Countries with Megacities | 0 | - | 4.99 | 249,527 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,396 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,707 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,733 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,669 |
| Countries by Official Language | 0 | - | 4.95 | 194,315 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,142 |
| Countries in their Native Language | 0 | - | 4.99 | 197,907 |
| Independence from Whom | 0 | - | 4.99 | 211,016 |
| Subdivisions by Country | 0 | - | 4.86 | 50,235 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,482 |
| Megadiverse Countries | 0 | - | 4.96 | 134,638 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,054 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,122 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,677 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,971 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,536 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,284 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,736 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,655 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,417 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,824 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,524 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,631 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,732 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,692 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,909 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,253 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,789 |
| World Map Quiz | 0 | - | 4.81 | 64,251 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 136,726 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,808 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,822 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,221 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,763 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,492 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,948 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,374 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,541 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,702 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,191 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,173 |
| Widest Countries East to West | 0 | - | 4.92 | 129,243 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,345 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,762 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,951 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,225 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,064 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,434 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,165 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,696 |
| Countries with Double Letters | 0 | - | 4.97 | 94,708 |
| Countries that End in N | 0 | - | 4.95 | 168,997 |
| Countries with Five Letters | 0 | - | 4.96 | 275,239 |
| Countries with Six Letters | 0 | - | 4.94 | 211,994 |
| Countries with W | 0 | - | 4.97 | 159,229 |
| Countries with Z | 0 | - | 4.98 | 289,365 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,432 |
| Countries That End in U | 0 | - | 4.95 | 120,249 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,451 |
| Countries that End in O | 0 | - | 4.92 | 159,066 |
| Countries that End in R | 0 | - | 4.87 | 118,633 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,405 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,026 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,914 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,938 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,524 |
| Countries That End in Y | 0 | - | 4.90 | 185,542 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,014 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,234 |
| Countries that End in I | 0 | - | 4.94 | 134,753 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,836 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,479 |
| Countries That End in NIA | 0 | - | 4.92 | 109,394 |
| Countries That End in BIA | 0 | - | 4.93 | 148,678 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,545 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,899 |
| Countries That End in RIA | 0 | - | 4.93 | 126,418 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,475 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,310 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,001 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,320 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,953 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,225 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,550 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,083 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,957 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,107 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,653 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,342 |
| Countries that End in L | 0 | - | 4.94 | 156,405 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,370 |
