| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,662,163 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,881 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 121,025 |
| Anagram Chain - Countries | 0 | - | 4.98 | 118,018 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,447 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,310 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,002,749 |
| Landlocked Countries | 0 | - | 4.99 | 427,654 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,129,264 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,277 |
| Countries with Four Letters | 0 | - | 4.99 | 426,666 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,285 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,110 |
| Himalayan Countries | 0 | - | 4.93 | 141,002 |
| Andean Countries | 0 | - | 4.94 | 85,890 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,000 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,616 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,546 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,750 |
| Danube Countries | 0 | - | 4.97 | 72,605 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,869 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,011 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,522 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,997 |
| European Landlocked Countries | 0 | - | 4.99 | 147,813 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,600 |
| Countries with the Most Species | 0 | - | 4.99 | 103,670 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,704 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,827 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,970 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,411 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,952 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,765 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,703 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,171 |
| Countries in the Alps | 0 | - | 4.87 | 119,042 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,112 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,249 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,090 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,215 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,185 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,422 |
| Country Chain | 0 | - | 4.96 | 218,731 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,639 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,031 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,535 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,348 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,976 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,850 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,703 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,959 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,060 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,242 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,767 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,754 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,895 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,536 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,628 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,639 |
| Largest Countries By Category | 0 | - | 4.97 | 159,167 |
| Countries by Emojis | 0 | - | 4.99 | 242,975 |
| Countries by Countries | 0 | - | 4.97 | 63,850 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,755 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,552 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,517 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,457 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,717 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,278 |
| Islands by Country #1 | 0 | - | 4.90 | 176,848 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,389 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,697 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,506 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,660 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,516 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,407 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,745 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,741 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,548 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,780 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 746,773 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,980 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,160 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,606 |
| Island Countries | 0 | - | 4.99 | 713,175 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,664 |
| Northernmost Countries | 0 | - | 4.99 | 364,813 |
| Countries of South America | 0 | - | 5.00 | 934,844 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,181 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,480 |
| "Land" Countries | 0 | - | 4.98 | 339,159 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,962 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,863 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,809 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,244 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,061 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,333 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,763 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,938 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,746 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,559 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 194,133 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,420 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,665 |
| Random Countries by Borders | 0 | - | 4.99 | 83,236 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,985 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,634 |
| Countries with Megacities | 0 | - | 4.99 | 268,142 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,285 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,403 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,612 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,516 |
| Countries by Official Language | 0 | - | 4.95 | 196,318 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,076 |
| Countries in their Native Language | 0 | - | 4.99 | 200,028 |
| Independence from Whom | 0 | - | 4.99 | 213,524 |
| Subdivisions by Country | 0 | - | 4.87 | 50,682 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,747 |
| Megadiverse Countries | 0 | - | 4.96 | 149,727 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,210 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,594 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,841 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,272 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,537 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,954 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,370 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,652 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,204 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,299 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,880 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,517 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,528 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,244 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,667 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,007 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,872 |
| World Map Quiz | 0 | - | 4.81 | 65,977 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,145 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,859 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,615 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,286 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,757 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,048 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,612 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,724 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,901 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,783 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,009 |
| Widest Countries East to West | 0 | - | 4.92 | 130,902 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,462 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,584 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,193 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,433 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,646 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,762 |
| Countries that End in N | 0 | - | 4.95 | 172,762 |
| Countries with Five Letters | 0 | - | 4.96 | 284,819 |
| Countries with Six Letters | 0 | - | 4.94 | 215,093 |
| Countries with W | 0 | - | 4.96 | 161,414 |
| Countries with Z | 0 | - | 4.98 | 293,154 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,781 |
| Countries That End in U | 0 | - | 4.95 | 121,449 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,536 |
| Countries that End in O | 0 | - | 4.92 | 160,421 |
| Countries that End in R | 0 | - | 4.87 | 119,312 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,085 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,252 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,543 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,294 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,964 |
| Countries That End in Y | 0 | - | 4.91 | 186,199 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,498 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,476 |
| Countries that End in I | 0 | - | 4.94 | 135,460 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,440 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,178 |
| Countries That End in NIA | 0 | - | 4.92 | 110,189 |
| Countries That End in BIA | 0 | - | 4.93 | 149,787 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,001 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,944 |
| Countries That End in RIA | 0 | - | 4.93 | 127,193 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,589 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,061 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,453 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,917 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,478 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,951 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,510 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,621 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,107 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,762 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,962 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,676 |
| Countries that End in L | 0 | - | 4.94 | 157,292 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,797 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,390 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,917 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,183 |
