| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,067 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 739,238 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,263 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,536 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,782,169 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,110,901 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,801 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,567 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,897 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,338 |
| Countries with Four Letters | 0 | - | 4.99 | 425,157 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,714 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,533 |
| Landlocked Countries | 0 | - | 4.99 | 424,540 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 981,567 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,636 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,747 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,160 |
| Country Chain | 0 | - | 4.96 | 218,222 |
| Countries by Emojis | 0 | - | 4.99 | 241,447 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,444 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,204 |
| Islands by Country #1 | 0 | - | 4.90 | 176,166 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,114 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,441 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,306 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,796,355 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,643 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,172 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,409 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,576 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,407 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,656 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,695 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,583 |
| Name a Valid Country #6 | 0 | - | 4.95 | 143,941 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,639 |
| Himalayan Countries | 0 | - | 4.94 | 139,779 |
| Andean Countries | 0 | - | 4.94 | 85,188 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,367 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,646 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,934 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,226 |
| Danube Countries | 0 | - | 4.97 | 72,274 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,419 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,706 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,857 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,360 |
| European Landlocked Countries | 0 | - | 4.99 | 147,457 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,090 |
| Countries with the Most Species | 0 | - | 4.99 | 103,487 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,233 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,710 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,822 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,749 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,478 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,907 |
| Countries in the Alps | 0 | - | 4.87 | 118,584 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,321 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,599 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,875 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,889 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,817 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,138 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,222 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,763 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,336 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,068 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,795 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,662 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,452 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,687 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,774 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,527 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,523 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,539 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,487 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,213 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,847 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,429 |
| Largest Countries By Category | 0 | - | 4.97 | 158,655 |
| Countries by Countries | 0 | - | 4.96 | 63,511 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,098 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,361 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,988 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,411 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,311 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,986 |
| Island Countries | 0 | - | 4.99 | 712,083 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,307 |
| Northernmost Countries | 0 | - | 4.99 | 363,415 |
| Countries of South America | 0 | - | 5.00 | 930,941 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,314 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,466 |
| "Land" Countries | 0 | - | 4.98 | 338,065 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,576 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,600 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,551 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,006 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,813 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,780 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,773 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,723 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,413 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,784 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,452 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 238,329 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,156 |
| Random Countries by Borders | 0 | - | 4.99 | 82,910 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,315 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 242,187 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,817 |
| Countries with Megacities | 0 | - | 4.99 | 266,422 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,524 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,920 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,817 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,040 |
| Countries by Official Language | 0 | - | 4.95 | 195,774 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,312 |
| Countries in their Native Language | 0 | - | 4.99 | 199,557 |
| Independence from Whom | 0 | - | 4.99 | 212,773 |
| Subdivisions by Country | 0 | - | 4.87 | 50,569 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,232 |
| Megadiverse Countries | 0 | - | 4.96 | 135,199 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,764 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,483 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,384 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,184 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,445 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,764 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,922 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,510 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,780 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,223 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,217 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,314 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,378 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,104 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,515 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,635 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,041 |
| World Map Quiz | 0 | - | 4.81 | 65,463 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,603 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,632 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,588 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,006 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,949 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,437 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,240 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,293 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,413 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,608 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,621 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,162 |
| Widest Countries East to West | 0 | - | 4.92 | 130,324 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,564 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,111 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,471 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,983 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,870 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,367 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,468 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,866 |
| Countries with Double Letters | 0 | - | 4.96 | 96,820 |
| Countries that End in N | 0 | - | 4.95 | 171,697 |
| Countries with Five Letters | 0 | - | 4.96 | 283,408 |
| Countries with Six Letters | 0 | - | 4.94 | 214,178 |
| Countries with W | 0 | - | 4.96 | 160,756 |
| Countries with Z | 0 | - | 4.98 | 292,141 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,104 |
| Countries That End in U | 0 | - | 4.95 | 121,081 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,917 |
| Countries that End in O | 0 | - | 4.92 | 159,728 |
| Countries that End in R | 0 | - | 4.87 | 119,116 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,868 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,602 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,012 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,724 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,649 |
| Countries That End in Y | 0 | - | 4.91 | 186,029 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,304 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,142 |
| Countries that End in I | 0 | - | 4.94 | 135,258 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,469 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,981 |
| Countries That End in NIA | 0 | - | 4.92 | 109,966 |
| Countries That End in BIA | 0 | - | 4.93 | 149,467 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,402 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,671 |
| Countries That End in RIA | 0 | - | 4.93 | 126,984 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,270 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,294 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,038 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,467 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,042 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,740 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,235 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,513 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,792 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,587 |
