| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,648,817 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,698 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,014 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,406 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,803 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,619 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,812,467 |
| Landlocked Countries | 0 | - | 4.99 | 424,866 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,111,822 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,951 |
| Countries with Four Letters | 0 | - | 4.99 | 425,360 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,652 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,807 |
| Himalayan Countries | 0 | - | 4.93 | 139,891 |
| Andean Countries | 0 | - | 4.94 | 85,244 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,419 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,747 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,986 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,289 |
| Danube Countries | 0 | - | 4.97 | 72,298 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,454 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,742 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,926 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,423 |
| European Landlocked Countries | 0 | - | 4.99 | 147,498 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,143 |
| Countries with the Most Species | 0 | - | 4.99 | 103,508 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,289 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,725 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,838 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,832 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,772 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,245 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,507 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,936 |
| Countries in the Alps | 0 | - | 4.87 | 118,650 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,422 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,680 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,903 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,933 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,854 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,169 |
| Country Chain | 0 | - | 4.96 | 218,292 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,293 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,794 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,360 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,098 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,808 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,681 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,480 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,714 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,806 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,593 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,543 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,636 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,534 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,351 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,926 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,457 |
| Largest Countries By Category | 0 | - | 4.97 | 158,727 |
| Countries by Emojis | 0 | - | 4.99 | 241,594 |
| Countries by Countries | 0 | - | 4.96 | 63,547 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,486 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,407 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,152 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,374 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,650 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,017 |
| Islands by Country #1 | 0 | - | 4.90 | 176,225 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,152 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,481 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,332 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 218,564 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,736 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,696 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,835 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,856 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,741 |
| Name a Valid Country #6 | 0 | - | 4.95 | 144,491 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 740,219 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,739 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,425 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,205 |
| Island Countries | 0 | - | 4.99 | 712,229 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,722 |
| Northernmost Countries | 0 | - | 4.99 | 363,599 |
| Countries of South America | 0 | - | 5.00 | 931,432 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,822 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,464 |
| "Land" Countries | 0 | - | 4.98 | 338,178 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,627 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,632 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,588 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,026 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,840 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,645 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,314 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,568 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,898 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,859 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,513 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,870 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,481 |
| Random Countries by Borders | 0 | - | 4.99 | 82,960 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,434 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,921 |
| Countries with Megacities | 0 | - | 4.99 | 266,659 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,631 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,987 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,931 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,096 |
| Countries by Official Language | 0 | - | 4.95 | 195,847 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,416 |
| Countries in their Native Language | 0 | - | 4.99 | 199,617 |
| Independence from Whom | 0 | - | 4.99 | 212,868 |
| Subdivisions by Country | 0 | - | 4.87 | 50,578 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,296 |
| Megadiverse Countries | 0 | - | 4.96 | 135,217 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,828 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,497 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,406 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,200 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,493 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,789 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,001 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,525 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,789 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,232 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,327 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,331 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,398 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,115 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,542 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,657 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,135 |
| World Map Quiz | 0 | - | 4.81 | 65,562 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,824 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,623 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,075 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,986 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,468 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,344 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,326 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,451 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,655 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,638 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,423 |
| Widest Countries East to West | 0 | - | 4.92 | 130,367 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,156 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,484 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,002 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,900 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,396 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,474 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,873 |
| Countries with Double Letters | 0 | - | 4.96 | 96,898 |
| Countries that End in N | 0 | - | 4.95 | 171,779 |
| Countries with Five Letters | 0 | - | 4.96 | 283,528 |
| Countries with Six Letters | 0 | - | 4.94 | 214,253 |
| Countries with W | 0 | - | 4.96 | 160,817 |
| Countries with Z | 0 | - | 4.98 | 292,239 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,170 |
| Countries That End in U | 0 | - | 4.95 | 121,112 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,977 |
| Countries that End in O | 0 | - | 4.92 | 159,749 |
| Countries that End in R | 0 | - | 4.87 | 119,132 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,888 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,683 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,054 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,752 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,683 |
| Countries That End in Y | 0 | - | 4.91 | 186,047 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,351 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,182 |
| Countries that End in I | 0 | - | 4.94 | 135,266 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,515 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,004 |
| Countries That End in NIA | 0 | - | 4.92 | 109,994 |
| Countries That End in BIA | 0 | - | 4.93 | 149,509 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,436 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,702 |
| Countries That End in RIA | 0 | - | 4.93 | 127,011 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,305 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,401 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,077 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,518 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,087 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,763 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,263 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,520 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,826 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,608 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,629 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,321 |
| Countries that End in L | 0 | - | 4.94 | 157,065 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,648 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,330 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,238 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,811 |
