| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,662,278 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 746,848 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,887 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 121,038 |
| Anagram Chain - Countries | 0 | - | 4.98 | 118,026 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,452 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,313 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,005,420 |
| Landlocked Countries | 0 | - | 4.99 | 427,690 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,129,361 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,285 |
| Countries with Four Letters | 0 | - | 4.99 | 426,679 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,520 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,127 |
| Himalayan Countries | 0 | - | 4.93 | 141,008 |
| Andean Countries | 0 | - | 4.94 | 85,894 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,007 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,621 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,551 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,757 |
| Danube Countries | 0 | - | 4.97 | 72,607 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,871 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,020 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,526 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,009 |
| European Landlocked Countries | 0 | - | 4.99 | 147,820 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,604 |
| Countries with the Most Species | 0 | - | 4.99 | 103,672 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,710 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,832 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,974 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,416 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,958 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,769 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,707 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,174 |
| Countries in the Alps | 0 | - | 4.87 | 119,047 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,118 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,253 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,091 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,218 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,189 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,424 |
| Country Chain | 0 | - | 4.96 | 218,734 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,643 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,033 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,536 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,350 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,977 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,851 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,705 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,960 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,063 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,255 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,768 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,766 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,904 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,555 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,632 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,642 |
| Largest Countries By Category | 0 | - | 4.97 | 159,187 |
| Countries by Emojis | 0 | - | 4.99 | 242,986 |
| Countries by Countries | 0 | - | 4.97 | 63,853 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,758 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,567 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,519 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,458 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,717 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,287 |
| Islands by Country #1 | 0 | - | 4.90 | 176,886 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,389 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,699 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,507 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,665 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,401 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,527 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,426 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,760 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,751 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,556 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,791 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,030 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,170 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,630 |
| Island Countries | 0 | - | 4.99 | 713,191 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,711 |
| Northernmost Countries | 0 | - | 4.99 | 364,829 |
| Countries of South America | 0 | - | 5.00 | 934,907 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,245 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,616 |
| "Land" Countries | 0 | - | 4.98 | 339,166 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,969 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,865 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,814 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,245 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,063 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,439 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,764 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,939 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,753 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,567 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 194,140 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,426 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,666 |
| Random Countries by Borders | 0 | - | 4.99 | 83,236 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,991 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,650 |
| Countries with Megacities | 0 | - | 4.99 | 268,168 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,294 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,405 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,625 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,521 |
| Countries by Official Language | 0 | - | 4.95 | 196,325 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,082 |
| Countries in their Native Language | 0 | - | 4.99 | 200,037 |
| Independence from Whom | 0 | - | 4.99 | 213,534 |
| Subdivisions by Country | 0 | - | 4.87 | 50,682 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,751 |
| Megadiverse Countries | 0 | - | 4.96 | 149,753 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,213 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,594 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,845 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,272 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,547 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,955 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,374 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,655 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,208 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,299 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,888 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,517 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,529 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,248 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,668 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,010 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,886 |
| World Map Quiz | 0 | - | 4.81 | 65,983 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,161 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,861 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,628 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,290 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,763 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,059 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,614 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,729 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,903 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,784 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,014 |
| Widest Countries East to West | 0 | - | 4.92 | 130,905 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,465 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,585 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,196 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,475 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,649 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,771 |
| Countries that End in N | 0 | - | 4.95 | 172,772 |
| Countries with Five Letters | 0 | - | 4.96 | 284,832 |
| Countries with Six Letters | 0 | - | 4.94 | 215,107 |
| Countries with W | 0 | - | 4.96 | 161,420 |
| Countries with Z | 0 | - | 4.98 | 293,164 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,793 |
| Countries That End in U | 0 | - | 4.95 | 121,455 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,540 |
| Countries that End in O | 0 | - | 4.92 | 160,423 |
| Countries that End in R | 0 | - | 4.87 | 119,315 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,086 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,260 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,604 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,298 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,969 |
| Countries That End in Y | 0 | - | 4.91 | 186,203 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,507 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,479 |
| Countries that End in I | 0 | - | 4.94 | 135,461 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,443 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,180 |
| Countries That End in NIA | 0 | - | 4.92 | 110,194 |
| Countries That End in BIA | 0 | - | 4.93 | 149,788 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,002 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,948 |
| Countries That End in RIA | 0 | - | 4.93 | 127,194 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,590 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,065 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,462 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,925 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,484 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,955 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,514 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,621 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,113 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,770 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,967 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,684 |
| Countries that End in L | 0 | - | 4.94 | 157,293 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,807 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,391 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,918 |
