| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,619,149 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,976 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,604 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,143 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,396,100 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,100,113 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,180 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,467 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,120 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,374 |
| Countries with Four Letters | 0 | - | 4.99 | 422,026 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,427 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,454 |
| Landlocked Countries | 0 | - | 4.99 | 419,715 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 975,960 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,153 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,301 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 180,236 |
| Country Chain | 0 | - | 4.96 | 216,980 |
| Countries by Emojis | 0 | - | 4.99 | 239,378 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,836 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,290 |
| Islands by Country #1 | 0 | - | 4.88 | 175,202 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,463 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,803 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,679 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,068 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,779 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,410 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,370 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,394 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,782 |
| Name a Valid Country #1 | 0 | - | 4.99 | 289,337 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,424 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,316 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,697 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,210 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,316 |
| Himalayan Countries | 0 | - | 4.95 | 137,756 |
| Andean Countries | 0 | - | 4.95 | 84,097 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,339 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,870 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,967 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,446 |
| Danube Countries | 0 | - | 4.97 | 71,739 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,665 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,140 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,801 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,878 |
| European Landlocked Countries | 0 | - | 4.99 | 146,863 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,240 |
| Countries with the Most Species | 0 | - | 4.99 | 103,007 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,399 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,458 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,621 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,372 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,045 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,440 |
| Countries in the Alps | 0 | - | 4.87 | 117,820 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,217 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,541 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,471 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,308 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,208 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,781 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,374 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,262 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,024 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,626 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,524 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,373 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,994 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,261 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,282 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,356 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,117 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,624 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,659 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,745 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,445 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,043 |
| Largest Countries By Category | 0 | - | 4.97 | 157,787 |
| Countries by Countries | 0 | - | 4.96 | 62,925 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,327 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,181 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,414 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,680 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,824 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,751 |
| Island Countries | 0 | - | 4.99 | 710,090 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,949 |
| Northernmost Countries | 0 | - | 4.99 | 360,865 |
| Countries of South America | 0 | - | 5.00 | 924,041 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,689 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,259 |
| "Land" Countries | 0 | - | 4.98 | 335,991 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,797 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,098 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,042 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,712 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,401 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,615 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,857 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,832 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,029 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,700 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,036 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,594 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 135,635 |
| Random Countries by Borders | 0 | - | 4.99 | 82,365 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,898 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 239,532 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,255 |
| Countries with Megacities | 0 | - | 4.99 | 262,422 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,089 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,117 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,394 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,167 |
| Countries by Official Language | 0 | - | 4.95 | 194,799 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,747 |
| Countries in their Native Language | 0 | - | 4.99 | 198,339 |
| Independence from Whom | 0 | - | 4.99 | 211,535 |
| Subdivisions by Country | 0 | - | 4.86 | 50,325 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,851 |
| Megadiverse Countries | 0 | - | 4.96 | 134,823 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,668 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,222 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,792 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,036 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,812 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,432 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,089 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,893 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,531 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,018 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,177 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,761 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,039 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,828 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,205 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,373 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,426 |
| World Map Quiz | 0 | - | 4.81 | 64,733 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 137,653 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,980 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,116 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,659 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,018 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,750 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,582 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,619 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,766 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,903 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,316 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,355 |
| Widest Countries East to West | 0 | - | 4.92 | 129,442 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,405 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,059 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,030 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,582 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,319 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,634 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,278 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,742 |
| Countries with Double Letters | 0 | - | 4.97 | 95,245 |
| Countries that End in N | 0 | - | 4.95 | 170,251 |
| Countries with Five Letters | 0 | - | 4.96 | 280,981 |
| Countries with Six Letters | 0 | - | 4.94 | 212,683 |
| Countries with W | 0 | - | 4.97 | 159,632 |
| Countries with Z | 0 | - | 4.98 | 290,403 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,875 |
| Countries That End in U | 0 | - | 4.95 | 120,466 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,889 |
| Countries that End in O | 0 | - | 4.92 | 159,248 |
| Countries that End in R | 0 | - | 4.87 | 118,768 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,545 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,480 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,238 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,154 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,763 |
| Countries That End in Y | 0 | - | 4.91 | 185,684 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,417 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,521 |
| Countries that End in I | 0 | - | 4.94 | 134,911 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,548 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,618 |
| Countries That End in NIA | 0 | - | 4.92 | 109,570 |
| Countries That End in BIA | 0 | - | 4.93 | 148,919 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,817 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,140 |
| Countries That End in RIA | 0 | - | 4.93 | 126,591 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,727 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,925 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,334 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,714 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,242 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,383 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,738 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,316 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,233 |
