| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,591,486 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 712,444 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,442 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,336 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,366 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,021 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,350 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,975,970 |
| Landlocked Countries | 0 | - | 4.99 | 414,310 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,089,404 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,086 |
| Countries with Four Letters | 0 | - | 4.99 | 418,920 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,722,556 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,874 |
| Himalayan Countries | 0 | - | 4.95 | 135,603 |
| Andean Countries | 0 | - | 4.94 | 82,958 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,323 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,360 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,024 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,695 |
| Danube Countries | 0 | - | 4.97 | 71,146 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,849 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,609 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,625 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,542 |
| European Landlocked Countries | 0 | - | 4.99 | 145,842 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,307 |
| Countries with the Most Species | 0 | - | 4.99 | 95,285 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,458 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,223 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,392 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,458 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,995 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,576 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,634 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,007 |
| Countries in the Alps | 0 | - | 4.86 | 116,938 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,643 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,389 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,073 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,480 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,257 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,065 |
| Country Chain | 0 | - | 4.96 | 215,872 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,666 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,820 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,539 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,123 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,218 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,086 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,508 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,804 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,798 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,212 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,714 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,291 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,870 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,660 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,900 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,652 |
| Largest Countries By Category | 0 | - | 4.97 | 156,874 |
| Countries by Emojis | 0 | - | 4.99 | 236,903 |
| Countries by Countries | 0 | - | 4.96 | 62,328 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,184 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,356 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,516 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,988 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,350 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,838 |
| Islands by Country #1 | 0 | - | 4.87 | 174,568 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,986 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,327 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,375 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,080 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,564 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,028 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,036 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,661 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,836 |
| Name a Valid Country #5 | 0 | - | 4.99 | 190,011 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,584 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,845 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,379 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,191 |
| Island Countries | 0 | - | 4.99 | 707,884 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,411 |
| Northernmost Countries | 0 | - | 4.99 | 358,093 |
| Countries of South America | 0 | - | 5.00 | 915,997 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,049 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,764 |
| "Land" Countries | 0 | - | 4.98 | 333,830 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,549 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,508 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,418 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,393 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,904 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,266 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,808 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,696 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,804 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,041 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,538 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,590 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 137,382 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,645 |
| Random Countries by Borders | 0 | - | 4.99 | 81,739 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,386 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,616 |
| Countries with Megacities | 0 | - | 4.99 | 247,536 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,452 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,195 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,861 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,122 |
| Countries by Official Language | 0 | - | 4.95 | 192,922 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,339 |
| Countries in their Native Language | 0 | - | 4.99 | 196,775 |
| Independence from Whom | 0 | - | 4.99 | 209,871 |
| Subdivisions by Country | 0 | - | 4.86 | 50,103 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,885 |
| Megadiverse Countries | 0 | - | 4.97 | 133,961 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,941 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,951 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,464 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,875 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,751 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,047 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,173 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,212 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,245 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,760 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,726 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,453 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,545 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,534 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,728 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,055 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,784 |
| World Map Quiz | 0 | - | 4.81 | 63,636 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,088 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,402 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,517 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,302 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,045 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,969 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,956 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,142 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,359 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,990 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,400 |
| Widest Countries East to West | 0 | - | 4.92 | 128,776 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,237 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,317 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,601 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,744 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,696 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,121 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 71,380 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,608 |
| Countries with Double Letters | 0 | - | 4.96 | 93,521 |
| Countries that End in N | 0 | - | 4.94 | 157,003 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,826 |
| Countries with Six Letters | 0 | - | 4.93 | 210,500 |
| Countries with W | 0 | - | 4.97 | 158,319 |
| Countries with Z | 0 | - | 4.98 | 288,036 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,636 |
| Countries That End in U | 0 | - | 4.95 | 119,560 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,710 |
| Countries that End in O | 0 | - | 4.92 | 158,597 |
| Countries that End in R | 0 | - | 4.87 | 118,313 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,882 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,226 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,424 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,559 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,102 |
| Countries That End in Y | 0 | - | 4.90 | 185,240 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,484 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,782 |
| Countries that End in I | 0 | - | 4.94 | 134,480 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,309 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,241 |
| Countries That End in NIA | 0 | - | 4.92 | 109,058 |
| Countries That End in BIA | 0 | - | 4.92 | 147,770 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,149 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,556 |
| Countries That End in RIA | 0 | - | 4.93 | 126,131 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,087 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,399 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,579 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,953 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,441 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,964 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,189 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,714 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,576 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,846 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,223 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,889 |
| Countries that End in L | 0 | - | 4.94 | 155,942 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,617 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,003 |
