| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,650,524 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 741,217 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,367 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,601 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,841,729 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,119,891 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,102 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,945 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,219 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,536 |
| Countries with Four Letters | 0 | - | 4.99 | 425,540 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,916 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,775 |
| Landlocked Countries | 0 | - | 4.99 | 425,172 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 982,107 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,800 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,902 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,304 |
| Country Chain | 0 | - | 4.96 | 218,363 |
| Countries by Emojis | 0 | - | 4.99 | 241,757 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,528 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,587 |
| Islands by Country #1 | 0 | - | 4.90 | 176,260 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,188 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,509 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,357 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,801,119 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,750 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,273 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,521 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,858 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,965 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,992 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,990 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,868 |
| Name a Valid Country #6 | 0 | - | 4.95 | 144,806 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,981 |
| Himalayan Countries | 0 | - | 4.93 | 140,016 |
| Andean Countries | 0 | - | 4.94 | 85,315 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,470 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,829 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,040 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,330 |
| Danube Countries | 0 | - | 4.97 | 72,321 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,498 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,771 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,992 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,497 |
| European Landlocked Countries | 0 | - | 4.99 | 147,542 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,204 |
| Countries with the Most Species | 0 | - | 4.99 | 103,524 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,330 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,751 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,854 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,793 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,529 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,963 |
| Countries in the Alps | 0 | - | 4.87 | 118,690 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,495 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,760 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,923 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,971 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,887 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,196 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,333 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,814 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,381 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,128 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,826 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,700 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,506 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,737 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,834 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,704 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,565 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,710 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,601 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,484 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,017 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,477 |
| Largest Countries By Category | 0 | - | 4.97 | 158,782 |
| Countries by Countries | 0 | - | 4.96 | 63,584 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,193 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,382 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,054 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,019 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,528 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,418 |
| Island Countries | 0 | - | 4.99 | 712,358 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,183 |
| Northernmost Countries | 0 | - | 4.99 | 363,754 |
| Countries of South America | 0 | - | 5.00 | 931,914 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,452 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,887,640 |
| "Land" Countries | 0 | - | 4.98 | 338,282 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,667 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,672 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,614 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,053 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,874 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,392,492 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,036 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,994 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,615 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,952 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,496 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 238,537 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,355 |
| Random Countries by Borders | 0 | - | 4.99 | 83,038 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,522 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.96 | 242,514 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,009 |
| Countries with Megacities | 0 | - | 4.99 | 266,844 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,729 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,036 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,042 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,163 |
| Countries by Official Language | 0 | - | 4.95 | 195,905 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,504 |
| Countries in their Native Language | 0 | - | 4.99 | 199,657 |
| Independence from Whom | 0 | - | 4.99 | 212,960 |
| Subdivisions by Country | 0 | - | 4.87 | 50,591 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,362 |
| Megadiverse Countries | 0 | - | 4.96 | 135,249 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,869 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,513 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,429 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,212 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,542 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,816 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,048 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,546 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,807 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,244 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,431 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,351 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,415 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,128 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,559 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,673 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,219 |
| World Map Quiz | 0 | - | 4.81 | 65,609 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,836 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,007 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,665 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,153 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,007 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,499 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,429 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,373 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,479 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,675 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,656 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,555 |
| Widest Countries East to West | 0 | - | 4.92 | 130,402 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,582 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,194 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,497 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,024 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,939 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,426 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,480 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,885 |
| Countries with Double Letters | 0 | - | 4.96 | 96,987 |
| Countries that End in N | 0 | - | 4.95 | 171,849 |
| Countries with Five Letters | 0 | - | 4.96 | 283,639 |
| Countries with Six Letters | 0 | - | 4.94 | 214,373 |
| Countries with W | 0 | - | 4.96 | 160,879 |
| Countries with Z | 0 | - | 4.98 | 292,339 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,236 |
| Countries That End in U | 0 | - | 4.95 | 121,154 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,037 |
| Countries that End in O | 0 | - | 4.92 | 160,178 |
| Countries that End in R | 0 | - | 4.87 | 119,155 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,911 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,760 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,103 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,781 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,714 |
| Countries That End in Y | 0 | - | 4.91 | 186,074 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,399 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,233 |
| Countries that End in I | 0 | - | 4.94 | 135,293 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,562 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,031 |
| Countries That End in NIA | 0 | - | 4.92 | 110,022 |
| Countries That End in BIA | 0 | - | 4.93 | 149,547 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,480 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,736 |
| Countries That End in RIA | 0 | - | 4.93 | 127,033 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,349 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,482 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,117 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,557 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,124 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,782 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,298 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,527 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,863 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,635 |
