| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,616,725 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,440 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,540 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,112 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,358,635 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,099,141 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 449,382 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,264 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,926 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,268 |
| Countries with Four Letters | 0 | - | 4.99 | 421,765 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,298 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,332 |
| Landlocked Countries | 0 | - | 4.99 | 419,285 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 975,447 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,006 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,782 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 175,047 |
| Country Chain | 0 | - | 4.96 | 216,879 |
| Countries by Emojis | 0 | - | 4.99 | 239,039 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,771 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,052 |
| Islands by Country #1 | 0 | - | 4.88 | 175,152 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,408 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,753 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,650 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,758,967 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,717 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,342 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,274 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,202 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,619 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,972 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,202 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,110 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,499 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,060 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,133 |
| Himalayan Countries | 0 | - | 4.95 | 137,559 |
| Andean Countries | 0 | - | 4.95 | 84,008 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,277 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,753 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,892 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,395 |
| Danube Countries | 0 | - | 4.97 | 71,701 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,610 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,096 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,709 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,789 |
| European Landlocked Countries | 0 | - | 4.99 | 146,812 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,176 |
| Countries with the Most Species | 0 | - | 4.99 | 102,949 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,328 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,439 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,598 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,334 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,008 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,394 |
| Countries in the Alps | 0 | - | 4.87 | 117,746 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,178 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,435 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,444 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,037 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,142 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,744 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,324 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,220 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,984 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,585 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,505 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,353 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,960 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,216 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,241 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,254 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,086 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,587 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,584 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,536 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,312 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,016 |
| Largest Countries By Category | 0 | - | 4.97 | 157,699 |
| Countries by Countries | 0 | - | 4.96 | 62,871 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,258 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,172 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,364 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,286 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,693 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,296 |
| Island Countries | 0 | - | 4.99 | 709,905 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,435 |
| Northernmost Countries | 0 | - | 4.99 | 360,631 |
| Countries of South America | 0 | - | 5.00 | 923,376 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,723 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,454 |
| "Land" Countries | 0 | - | 4.98 | 335,883 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,666 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,996 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,983 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,670 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,348 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,470 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,691 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,664 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,881 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,608 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,008 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,481 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 135,462 |
| Random Countries by Borders | 0 | - | 4.99 | 82,314 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,788 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 239,331 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,130 |
| Countries with Megacities | 0 | - | 4.99 | 261,386 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,986 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,052 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,265 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,076 |
| Countries by Official Language | 0 | - | 4.95 | 194,700 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,625 |
| Countries in their Native Language | 0 | - | 4.99 | 198,248 |
| Independence from Whom | 0 | - | 4.99 | 211,404 |
| Subdivisions by Country | 0 | - | 4.86 | 50,299 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,778 |
| Megadiverse Countries | 0 | - | 4.96 | 134,790 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,589 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,204 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,767 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,028 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,746 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,401 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,030 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,862 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,506 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,000 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,065 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,736 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,010 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,801 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,170 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,339 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,293 |
| World Map Quiz | 0 | - | 4.81 | 64,642 |
| Empty World Map without 20 Random Countries | 0 | - | 4.93 | 137,471 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,752 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,068 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,582 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,969 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,684 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,428 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,558 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,716 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,860 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,292 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,320 |
| Widest Countries East to West | 0 | - | 4.92 | 129,407 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,389 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,992 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,007 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,544 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,264 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,581 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,249 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,732 |
| Countries with Double Letters | 0 | - | 4.97 | 95,150 |
| Countries that End in N | 0 | - | 4.95 | 170,107 |
| Countries with Five Letters | 0 | - | 4.96 | 280,582 |
| Countries with Six Letters | 0 | - | 4.94 | 212,555 |
| Countries with W | 0 | - | 4.97 | 159,550 |
| Countries with Z | 0 | - | 4.98 | 289,889 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,799 |
| Countries That End in U | 0 | - | 4.95 | 120,426 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,809 |
| Countries that End in O | 0 | - | 4.92 | 159,216 |
| Countries that End in R | 0 | - | 4.87 | 118,749 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,525 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,389 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,153 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,108 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,700 |
| Countries That End in Y | 0 | - | 4.91 | 185,657 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,284 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,467 |
| Countries that End in I | 0 | - | 4.94 | 134,888 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,140 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,594 |
| Countries That End in NIA | 0 | - | 4.92 | 109,535 |
| Countries That End in BIA | 0 | - | 4.93 | 148,873 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,763 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,093 |
| Countries That End in RIA | 0 | - | 4.93 | 126,559 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,667 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,793 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,278 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,648 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,178 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,350 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,706 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,272 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,164 |
