| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,588,290 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 711,592 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,185 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,133 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,243 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,856 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,202 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,923,407 |
| Landlocked Countries | 0 | - | 4.99 | 413,658 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,088,109 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,794 |
| Countries with Four Letters | 0 | - | 4.99 | 418,551 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,717,187 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,606 |
| Himalayan Countries | 0 | - | 4.95 | 135,375 |
| 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 | 147,408 |
| 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 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,329 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,958 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,443 |
| 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 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,570 |
| 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 |
| Country Chain | 0 | - | 4.96 | 215,739 |
| 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 | 57,304 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,063 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,196 |
| 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 | 117,071 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,649 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,254 |
| 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 | 239,320 |
| 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 Emojis | 0 | - | 4.99 | 236,201 |
| Countries by Countries | 0 | - | 4.96 | 62,257 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,118 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,043 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,390 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,963 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,332 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,772 |
| Islands by Country #1 | 0 | - | 4.87 | 174,494 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,927 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,289 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,339 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,822 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,413 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,832 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,555 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,427 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,599 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,815 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,420 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,007 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,134 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,869 |
| Island Countries | 0 | - | 4.99 | 707,640 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,497 |
| Northernmost Countries | 0 | - | 4.99 | 357,741 |
| Countries of South America | 0 | - | 5.00 | 914,845 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,552 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,506 |
| "Land" Countries | 0 | - | 4.98 | 333,665 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,450 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,458 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,352 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,341 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,857 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,435 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,682 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,635 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,596 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,857 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,350 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,458 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,606 |
| Random Countries by Borders | 0 | - | 4.99 | 81,681 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,229 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,249 |
| Countries with Megacities | 0 | - | 4.99 | 246,953 |
| 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 | 135,556 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,880 |
| 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 | 209,698 |
| 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 | 161,667 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,001 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,026 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,149 |
| 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 |
| World Map Quiz | 0 | - | 4.81 | 63,495 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,691 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,333 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,360 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,994 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,955 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,781 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,859 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,065 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,279 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,950 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,338 |
| Widest Countries East to West | 0 | - | 4.92 | 128,606 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,218 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,217 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,569 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,691 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,635 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,047 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,051 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,584 |
| Countries with Double Letters | 0 | - | 4.97 | 93,396 |
| Countries that End in N | 0 | - | 4.94 | 156,887 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,691 |
| Countries with Six Letters | 0 | - | 4.93 | 210,371 |
| Countries with W | 0 | - | 4.97 | 158,233 |
| Countries with Z | 0 | - | 4.98 | 287,882 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,556 |
| Countries That End in U | 0 | - | 4.95 | 119,519 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,561 |
| Countries that End in O | 0 | - | 4.92 | 158,558 |
| Countries that End in R | 0 | - | 4.87 | 118,275 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,860 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,034 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,335 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,498 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,022 |
| Countries That End in Y | 0 | - | 4.90 | 185,206 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,379 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,693 |
| Countries that End in I | 0 | - | 4.94 | 134,413 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,202 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,194 |
| Countries That End in NIA | 0 | - | 4.92 | 109,011 |
| Countries That End in BIA | 0 | - | 4.92 | 147,720 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,065 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,487 |
| Countries That End in RIA | 0 | - | 4.93 | 126,084 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,012 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,202 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,525 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,890 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,361 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,928 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,124 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,648 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,513 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,816 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,146 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,815 |
| Countries that End in L | 0 | - | 4.94 | 155,733 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,209 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,988 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,513 |
