| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,583,254 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 710,466 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 162,806 |
| Solve the Secret Country #2 | 0 | - | 4.84 | 115,806 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,051 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,612 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,012 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,847,798 |
| Landlocked Countries | 0 | - | 4.99 | 412,841 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,121 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,415 |
| Countries with Four Letters | 0 | - | 4.99 | 418,006 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,709,378 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,218 |
| Himalayan Countries | 0 | - | 4.95 | 135,041 |
| Andean Countries | 0 | - | 4.94 | 82,654 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,077 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 122,974 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,749 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,454 |
| Danube Countries | 0 | - | 4.97 | 70,989 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,633 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,450 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,278 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,188 |
| European Landlocked Countries | 0 | - | 4.99 | 145,662 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,041 |
| Countries with the Most Species | 0 | - | 4.99 | 95,181 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,186 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,172 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,331 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,119 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,906 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,258 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,506 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,862 |
| Countries in the Alps | 0 | - | 4.87 | 116,678 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,461 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,059 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,935 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,317 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,061 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,933 |
| Country Chain | 0 | - | 4.96 | 215,544 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,463 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,682 |
| Largest Country by Body of Water | 0 | - | 4.95 | 55,212 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,964 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,164 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,994 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,357 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,667 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,670 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,852 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,562 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,198 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,658 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,809 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,348 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,531 |
| Largest Countries By Category | 0 | - | 4.97 | 156,599 |
| Countries by Emojis | 0 | - | 4.99 | 235,773 |
| Countries by Countries | 0 | - | 4.96 | 62,159 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,014 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,514 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,203 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,930 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,306 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,648 |
| Islands by Country #1 | 0 | - | 4.87 | 174,388 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,835 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,202 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,274 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,465 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,198 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,521 |
| Name a Valid Country #1 | 0 | - | 4.99 | 282,823 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,061 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,217 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,539 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,165 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,972 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,813 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 400,963 |
| Island Countries | 0 | - | 4.99 | 707,213 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,272 |
| Northernmost Countries | 0 | - | 4.99 | 357,214 |
| Countries of South America | 0 | - | 5.00 | 913,304 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,499 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,844,986 |
| "Land" Countries | 0 | - | 4.98 | 333,403 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,306 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,360 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,246 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,278 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,757 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,359,927 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,508 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,556 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,235 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,512 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,059 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,248 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,533 |
| Random Countries by Borders | 0 | - | 4.99 | 81,572 |
| Random Name a Valid Country | 0 | - | 4.99 | 202,971 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,851 |
| Countries with Megacities | 0 | - | 4.99 | 246,146 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,769 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,727 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,236 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,663 |
| Countries by Official Language | 0 | - | 4.95 | 192,578 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,851 |
| Countries in their Native Language | 0 | - | 4.99 | 196,457 |
| Independence from Whom | 0 | - | 4.99 | 209,444 |
| Subdivisions by Country | 0 | - | 4.86 | 50,032 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,578 |
| Megadiverse Countries | 0 | - | 4.97 | 133,827 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,641 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,875 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,370 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,832 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,529 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,937 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,583 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,058 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,173 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,711 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,366 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,359 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,423 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,441 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,600 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,977 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,327 |
| World Map Quiz | 0 | - | 4.81 | 63,349 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,187 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,210 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,141 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,874 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,845 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,489 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,757 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,956 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,166 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,875 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,248 |
| Widest Countries East to West | 0 | - | 4.92 | 128,515 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,191 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,072 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,518 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,619 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,515 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,944 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,030 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,551 |
| Countries with Double Letters | 0 | - | 4.97 | 93,208 |
| Countries that End in N | 0 | - | 4.94 | 156,275 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,469 |
| Countries with Six Letters | 0 | - | 4.93 | 210,169 |
| Countries with W | 0 | - | 4.97 | 158,087 |
| Countries with Z | 0 | - | 4.98 | 287,302 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,422 |
| Countries That End in U | 0 | - | 4.95 | 119,439 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,320 |
| Countries that End in O | 0 | - | 4.92 | 158,472 |
| Countries that End in R | 0 | - | 4.86 | 118,195 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,805 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,853 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,178 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,374 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,562 |
| Countries That End in Y | 0 | - | 4.90 | 185,147 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,168 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,540 |
| Countries that End in I | 0 | - | 4.94 | 134,296 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,003 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,136 |
| Countries That End in NIA | 0 | - | 4.92 | 108,925 |
| Countries That End in BIA | 0 | - | 4.92 | 147,605 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,960 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,392 |
| Countries That End in RIA | 0 | - | 4.93 | 126,004 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,913 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 224,951 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,421 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,799 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,232 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,866 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,017 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,543 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,384 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,767 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,007 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,679 |
| Countries that End in L | 0 | - | 4.94 | 155,635 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,636 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,965 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,450 |
