| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,663,446 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 747,249 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,946 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 121,091 |
| Anagram Chain - Countries | 0 | - | 4.98 | 118,061 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,505 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,353 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,022,128 |
| Landlocked Countries | 0 | - | 4.99 | 427,904 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,129,836 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,367 |
| Countries with Four Letters | 0 | - | 4.99 | 426,805 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,817,024 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,206 |
| Himalayan Countries | 0 | - | 4.93 | 141,089 |
| Andean Countries | 0 | - | 4.94 | 85,940 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,043 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,689 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,589 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,786 |
| Danube Countries | 0 | - | 4.97 | 72,629 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,900 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,038 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,585 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,059 |
| European Landlocked Countries | 0 | - | 4.99 | 147,843 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,637 |
| Countries with the Most Species | 0 | - | 4.99 | 103,684 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,745 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,840 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,985 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,467 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,972 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,813 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,722 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,205 |
| Countries in the Alps | 0 | - | 4.87 | 119,076 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,174 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,286 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,105 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,236 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,213 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,437 |
| Country Chain | 0 | - | 4.96 | 218,761 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,661 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,050 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,551 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,366 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,988 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,860 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,723 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,981 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,081 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,310 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,775 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,895 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,937 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,657 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,748 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,656 |
| Largest Countries By Category | 0 | - | 4.97 | 159,217 |
| Countries by Emojis | 0 | - | 4.99 | 243,053 |
| Countries by Countries | 0 | - | 4.97 | 63,873 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,775 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,686 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,555 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,465 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,727 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,313 |
| Islands by Country #1 | 0 | - | 4.90 | 176,946 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,406 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,724 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,520 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,767 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.91 | 281,471 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,583 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,573 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,837 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,815 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,636 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,847 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,207 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,236 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,759 |
| Island Countries | 0 | - | 4.99 | 713,312 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,963 |
| Northernmost Countries | 0 | - | 4.99 | 364,930 |
| Countries of South America | 0 | - | 5.00 | 935,195 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,742 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,315 |
| "Land" Countries | 0 | - | 4.98 | 339,221 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,990 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,889 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,839 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,259 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,087 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,399,048 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,790 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,955 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,832 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,642 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 194,196 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,458 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,676 |
| Random Countries by Borders | 0 | - | 4.99 | 83,262 |
| Random Name a Valid Country | 0 | - | 4.99 | 207,033 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,718 |
| Countries with Megacities | 0 | - | 4.99 | 268,294 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,347 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,446 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,693 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,558 |
| Countries by Official Language | 0 | - | 4.95 | 196,364 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,134 |
| Countries in their Native Language | 0 | - | 4.99 | 200,075 |
| Independence from Whom | 0 | - | 4.99 | 213,595 |
| Subdivisions by Country | 0 | - | 4.87 | 50,689 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,790 |
| Megadiverse Countries | 0 | - | 4.96 | 149,904 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,242 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,608 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,874 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,277 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,581 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,970 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,398 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,665 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,226 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,304 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,937 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,534 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,543 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,259 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,685 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,023 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,943 |
| World Map Quiz | 0 | - | 4.81 | 66,007 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,283 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,882 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,674 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,315 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,793 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,116 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,637 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,756 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,917 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,794 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,036 |
| Widest Countries East to West | 0 | - | 4.92 | 130,923 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,641 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,491 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,595 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,214 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,512 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,674 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,556 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,935 |
| Countries with Double Letters | 0 | - | 4.96 | 97,826 |
| Countries that End in N | 0 | - | 4.95 | 172,826 |
| Countries with Five Letters | 0 | - | 4.96 | 284,902 |
| Countries with Six Letters | 0 | - | 4.94 | 215,167 |
| Countries with W | 0 | - | 4.96 | 161,460 |
| Countries with Z | 0 | - | 4.98 | 293,234 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,828 |
| Countries That End in U | 0 | - | 4.95 | 121,475 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,585 |
| Countries that End in O | 0 | - | 4.92 | 160,443 |
| Countries that End in R | 0 | - | 4.87 | 119,326 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,093 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,305 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,876 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,321 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 144,004 |
| Countries That End in Y | 0 | - | 4.91 | 186,219 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,551 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,511 |
| Countries that End in I | 0 | - | 4.94 | 135,468 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,490 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,196 |
| Countries That End in NIA | 0 | - | 4.92 | 110,214 |
| Countries That End in BIA | 0 | - | 4.93 | 149,806 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,019 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,967 |
| Countries That End in RIA | 0 | - | 4.93 | 127,208 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,611 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,117 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,494 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,958 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,513 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,972 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,536 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,627 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,145 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,790 |
| Countries with the Word "And" | 0 | - | 4.99 | 118,006 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,705 |
| Countries that End in L | 0 | - | 4.94 | 157,309 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,894 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,398 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,928 |
