| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,614,758 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,033 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,103 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,812 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,188 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,180 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,245 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,329,637 |
| Landlocked Countries | 0 | - | 4.99 | 418,879 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,400 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,880 |
| Countries with Four Letters | 0 | - | 4.99 | 421,560 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,756,470 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,974 |
| Himalayan Countries | 0 | - | 4.94 | 137,400 |
| Andean Countries | 0 | - | 4.95 | 83,922 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,218 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,635 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,822 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,343 |
| Danube Countries | 0 | - | 4.97 | 71,651 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,538 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,048 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,636 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,721 |
| European Landlocked Countries | 0 | - | 4.99 | 146,771 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,125 |
| Countries with the Most Species | 0 | - | 4.99 | 102,905 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,259 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,430 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,585 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,462 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,297 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,681 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,983 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,357 |
| Countries in the Alps | 0 | - | 4.87 | 117,682 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,126 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,355 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,411 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,979 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,087 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,498 |
| Country Chain | 0 | - | 4.96 | 216,813 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,278 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,180 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,963 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,547 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,474 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,335 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,917 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,183 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,203 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,166 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,058 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,568 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,511 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,334 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,212 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,993 |
| Largest Countries By Category | 0 | - | 4.97 | 157,624 |
| Countries by Emojis | 0 | - | 4.99 | 238,683 |
| Countries by Countries | 0 | - | 4.96 | 62,832 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,716 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,822 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,201 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,158 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,466 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,317 |
| Islands by Country #1 | 0 | - | 4.88 | 175,108 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,374 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,715 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,623 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 215,984 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,906 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,497 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,658 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,051 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,952 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,334 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,934 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,933 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,585 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,066 |
| Island Countries | 0 | - | 4.99 | 709,720 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,983 |
| Northernmost Countries | 0 | - | 4.99 | 360,433 |
| Countries of South America | 0 | - | 5.00 | 922,839 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,897 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,143 |
| "Land" Countries | 0 | - | 4.98 | 335,782 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,558 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,930 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,946 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,634 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,294 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,563 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,488 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,078 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,521 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,524 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,784 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,534 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,986 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,988 |
| Random Countries by Borders | 0 | - | 4.99 | 82,280 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,693 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,009 |
| Countries with Megacities | 0 | - | 4.99 | 259,461 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,868 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,984 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,155 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,986 |
| Countries by Official Language | 0 | - | 4.95 | 194,636 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,511 |
| Countries in their Native Language | 0 | - | 4.99 | 198,175 |
| Independence from Whom | 0 | - | 4.99 | 211,289 |
| Subdivisions by Country | 0 | - | 4.86 | 50,286 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,692 |
| Megadiverse Countries | 0 | - | 4.96 | 134,758 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,535 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,181 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,750 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,015 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,705 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,378 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,966 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,839 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,481 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,986 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,940 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,709 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,990 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,769 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,147 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,324 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,176 |
| World Map Quiz | 0 | - | 4.81 | 64,508 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,563 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,026 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,486 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,923 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,632 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,312 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,513 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,666 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,821 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,258 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,278 |
| Widest Countries East to West | 0 | - | 4.92 | 129,367 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,380 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,953 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,989 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,507 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,214 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,539 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,229 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,725 |
| Countries with Double Letters | 0 | - | 4.97 | 95,077 |
| Countries that End in N | 0 | - | 4.95 | 169,974 |
| Countries with Five Letters | 0 | - | 4.96 | 280,138 |
| Countries with Six Letters | 0 | - | 4.94 | 212,464 |
| Countries with W | 0 | - | 4.97 | 159,515 |
| Countries with Z | 0 | - | 4.98 | 289,787 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,729 |
| Countries That End in U | 0 | - | 4.95 | 120,407 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,741 |
| Countries that End in O | 0 | - | 4.92 | 159,190 |
| Countries that End in R | 0 | - | 4.87 | 118,729 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,507 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,321 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,096 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,074 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,658 |
| Countries That End in Y | 0 | - | 4.90 | 185,646 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,219 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,414 |
| Countries that End in I | 0 | - | 4.94 | 134,863 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,068 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,572 |
| Countries That End in NIA | 0 | - | 4.92 | 109,512 |
| Countries That End in BIA | 0 | - | 4.93 | 148,839 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,705 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,054 |
| Countries That End in RIA | 0 | - | 4.93 | 126,530 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,618 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,676 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,217 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,576 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,104 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,316 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,680 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,236 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,114 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,188 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,819 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,528 |
| Countries that End in L | 0 | - | 4.94 | 156,538 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,976 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,153 |
