| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,613,578 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 718,744 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,023 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,722 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,134 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,123 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,196 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,312,638 |
| Landlocked Countries | 0 | - | 4.99 | 418,571 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,097,855 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,796 |
| Countries with Four Letters | 0 | - | 4.99 | 421,429 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,879 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,797 |
| Himalayan Countries | 0 | - | 4.94 | 137,257 |
| Andean Countries | 0 | - | 4.95 | 83,845 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,116 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,513 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,774 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,298 |
| Danube Countries | 0 | - | 4.97 | 71,615 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,492 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,015 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,579 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,647 |
| European Landlocked Countries | 0 | - | 4.99 | 146,729 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,075 |
| Countries with the Most Species | 0 | - | 4.99 | 102,868 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,211 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,420 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,575 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,417 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,279 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,636 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,958 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,332 |
| Countries in the Alps | 0 | - | 4.87 | 117,631 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,095 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,301 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,385 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,947 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,051 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,418 |
| Country Chain | 0 | - | 4.96 | 216,776 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,237 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,150 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,944 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,519 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,456 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,319 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,894 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,166 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,181 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,124 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,039 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,554 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,473 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,222 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,137 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,971 |
| Largest Countries By Category | 0 | - | 4.97 | 157,576 |
| Countries by Emojis | 0 | - | 4.99 | 238,527 |
| Countries by Countries | 0 | - | 4.96 | 62,805 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,662 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,650 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,156 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,148 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,464 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,292 |
| Islands by Country #1 | 0 | - | 4.88 | 175,061 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,341 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,690 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,598 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 215,866 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,855 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,424 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,491 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,956 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,875 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,243 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,877 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,702 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,505 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,931 |
| Island Countries | 0 | - | 4.99 | 709,610 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,711 |
| Northernmost Countries | 0 | - | 4.99 | 360,335 |
| Countries of South America | 0 | - | 5.00 | 922,522 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,502 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,467 |
| "Land" Countries | 0 | - | 4.98 | 335,720 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,526 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,913 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,909 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,618 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,271 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,001 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,455 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,060 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,390 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,426 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,711 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,493 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,882 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,961 |
| Random Countries by Borders | 0 | - | 4.99 | 82,259 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,631 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,919 |
| Countries with Megacities | 0 | - | 4.99 | 257,344 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,778 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,927 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,071 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,933 |
| Countries by Official Language | 0 | - | 4.95 | 194,584 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,463 |
| Countries in their Native Language | 0 | - | 4.99 | 198,129 |
| Independence from Whom | 0 | - | 4.99 | 211,239 |
| Subdivisions by Country | 0 | - | 4.86 | 50,273 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,644 |
| Megadiverse Countries | 0 | - | 4.96 | 134,746 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,506 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,162 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,732 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,672 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,360 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,923 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,821 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,467 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,973 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,893 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,694 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,970 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,757 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,123 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,307 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,107 |
| World Map Quiz | 0 | - | 4.81 | 64,464 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,458 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,004 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,439 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,894 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,604 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,259 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,485 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,648 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,799 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,246 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,256 |
| Widest Countries East to West | 0 | - | 4.92 | 129,339 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,376 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,922 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,983 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,489 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,179 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,517 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,222 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,723 |
| Countries with Double Letters | 0 | - | 4.97 | 95,034 |
| Countries that End in N | 0 | - | 4.95 | 169,889 |
| Countries with Five Letters | 0 | - | 4.96 | 279,816 |
| Countries with Six Letters | 0 | - | 4.94 | 212,413 |
| Countries with W | 0 | - | 4.97 | 159,491 |
| Countries with Z | 0 | - | 4.98 | 289,735 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,684 |
| Countries That End in U | 0 | - | 4.95 | 120,388 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,707 |
| Countries that End in O | 0 | - | 4.92 | 159,178 |
| Countries that End in R | 0 | - | 4.87 | 118,722 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,501 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,265 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,073 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,062 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,643 |
| Countries That End in Y | 0 | - | 4.90 | 185,637 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,184 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,388 |
| Countries that End in I | 0 | - | 4.94 | 134,846 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,036 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,559 |
| Countries That End in NIA | 0 | - | 4.92 | 109,499 |
| Countries That End in BIA | 0 | - | 4.93 | 148,815 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,676 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,024 |
| Countries That End in RIA | 0 | - | 4.93 | 126,512 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,598 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,608 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,177 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,528 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,079 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,295 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,652 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,207 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,093 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,181 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,795 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,505 |
| Countries that End in L | 0 | - | 4.94 | 156,526 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,884 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,150 |
