| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,527,301 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 158,082 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 111,915 |
| Anagram Chain - Countries | 0 | - | 4.99 | 112,591 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 64,826 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 60,363 |
| Countries of the World Quiz | 0 | - | 5.00 | 45,990,560 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 402,584 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,064,144 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 440,452 |
| Countries with Four Letters | 0 | - | 4.99 | 411,194 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,632,818 |
| Sahara Desert Countries | 0 | - | 4.97 | 155,491 |
| Himalayan Countries | 0 | - | 4.95 | 130,922 |
| Andean Countries | 0 | - | 4.94 | 80,358 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 60,386 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 119,819 |
| Coffee Producing Countries | 0 | - | 4.81 | 63,831 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 62,874 |
| Danube Countries | 0 | - | 4.97 | 63,216 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 100,136 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 84,185 |
| Countries with the Worst Passports | 0 | - | 4.93 | 80,029 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 144,638 |
| European Landlocked Countries | 0 | - | 4.99 | 144,041 |
| Partially Recognized Countries | 0 | - | 4.98 | 102,925 |
| Countries with the Most Species | 0 | - | 4.99 | 94,185 |
| Countries 197 to 205 | 0 | - | 4.88 | 67,309 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 52,703 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 46,884 |
| Top Five Countries By Category #2 | 0 | - | 4.92 | 181,981 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,078 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 166,063 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 71,669 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 55,848 |
| Countries in the Alps | 0 | - | 4.87 | 114,826 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 93,258 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 102,718 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,181 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 93,883 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 113,730 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 93,912 |
| Country Chain | 0 | - | 4.96 | 213,219 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 97,867 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 51,778 |
| Largest Country by Body of Water | 0 | - | 4.96 | 49,507 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 60,926 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 52,586 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,383 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 102,337 |
| Arctic Ocean Countries | 0 | - | 4.95 | 77,765 |
| Countries with the Most Grassland | 0 | - | 4.93 | 75,710 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 114,284 |
| Countries with the Most Climate Zones | 0 | - | 4.95 | 66,650 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 58,421 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 42,797 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 233,241 |
| World Countries - Blind Typing | 0 | - | 5.00 | 102,073 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 46,756 |
| Largest Countries By Category | 0 | - | 4.97 | 154,795 |
| Countries by Emojis | 0 | - | 4.99 | 230,895 |
| Countries by Countries | 0 | - | 4.96 | 60,949 |
| Countries With One Word And Two O's | 0 | - | 4.95 | 53,820 |
| Country Flags with the Most White | 0 | - | 4.87 | 135,520 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,526 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 86,461 |
| Islands by Country #1 | 0 | - | 4.87 | 172,941 |
| Regions of Countries #1 | 0 | - | 4.96 | 157,601 |
| Regions of Countries #2 | 0 | - | 4.95 | 121,880 |
| Regions of Countries #3 | 0 | - | 4.84 | 89,254 |
| Name a Valid Country #3 | 0 | - | 4.99 | 254,591 |
| Name a Valid Country #1 | 0 | - | 4.99 | 272,413 |
| Name a Valid Country #2 | 0 | - | 4.98 | 240,158 |
| Name a Valid Country #4 | 0 | - | 4.97 | 232,622 |
| Name a Valid Country #5 | 0 | - | 4.99 | 184,998 |
| Name a Valid Country #6 | 0 | - | 4.95 | 122,213 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 697,185 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 368,271 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 394,226 |
| Island Countries Quiz | 0 | - | 4.99 | 702,814 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,023,555 |
| Northernmost Countries | 0 | - | 4.99 | 350,587 |
| Countries of South America | 0 | - | 5.00 | 897,264 |
| Countries of Oceania | 0 | - | 5.00 | 1,018,189 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,807,039 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 176,973 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 86,997 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 118,950 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 109,471 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 87,766 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,331,767 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 45,873 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 94,562 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 312,063 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 229,576 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 219,349 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 186,918 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.96 | 119,093 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 101,220 |
| Random Countries by Borders | 0 | - | 4.99 | 80,320 |
| Random Name a Valid Country | 0 | - | 4.99 | 200,090 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 167,471 |
| Countries with Megacities | 0 | - | 4.99 | 228,472 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 193,605 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 109,986 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 132,374 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 77,632 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 313,814 |
| Countries by Official Language | 0 | - | 4.95 | 189,764 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 289,533 |
| Countries in their Native Language | 0 | - | 4.99 | 193,751 |
| Independence from Whom | 0 | - | 4.99 | 206,276 |
| Subdivisions by Country | 0 | - | 4.86 | 49,561 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 128,190 |
| Megadiverse Countries | 0 | - | 4.97 | 132,966 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 127,482 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,361 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 123,790 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,459 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.86 | 50,024 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 159,367 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,144 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 90,857 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 151,948 |
| Countries with Multiple Populous Islands | 0 | - | 4.88 | 94,104 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,304 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 72,941 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 106,230 |
| Countries Furthest from the United States | 0 | - | 4.94 | 87,716 |
| Countries with the Highest HDI | 0 | - | 4.95 | 135,814 |
| Straight Shot to the Arctic Circle | 0 | - | 4.87 | 73,910 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,151 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 105,117 |
| World Map Quiz | 0 | - | 4.84 | 61,567 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 146,869 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 104,656 |
| Southernmost Countries of the World | 0 | - | 4.99 | 223,767 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 102,389 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 120,279 |
| Countries With the Most Languages | 0 | - | 4.89 | 196,129 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 108,341 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 91,780 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 96,971 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 60,136 |
| Tallest Countries North to South | 0 | - | 4.83 | 118,264 |
| Widest Countries East to West | 0 | - | 4.92 | 127,516 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,891 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 183,687 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 96,855 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 92,737 |
| Largest Countries as a Percent of Continent | 0 | - | 4.98 | 146,126 |
| Countries with the Most Desert | 0 | - | 4.93 | 125,766 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,737 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,295 |
| Countries with Double Letters | 0 | - | 4.96 | 89,602 |
| Countries that End in N | 0 | - | 4.93 | 152,724 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 254,286 |
| Countries with Six Letters Quiz | 0 | - | 4.93 | 206,818 |
| Countries with W | 0 | - | 4.97 | 155,115 |
| Countries with Z | 0 | - | 4.98 | 283,219 |
| Countries with Letters Missing | 0 | - | 4.97 | 181,685 |
| Countries That End in U | 0 | - | 4.95 | 117,686 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 105,953 |
| Countries that End in O | 0 | - | 4.92 | 157,030 |
| Countries that End in R | 0 | - | 4.84 | 101,649 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 153,987 |
| Countries Ending in "IA" | 0 | - | 4.99 | 204,300 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 167,225 |
| Countries by Last Two Letters | 0 | - | 4.87 | 133,201 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 139,134 |
| Countries That End in Y | 0 | - | 4.91 | 184,111 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 194,196 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 149,865 |
| Countries that End in I | 0 | - | 4.93 | 118,845 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 180,004 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 94,256 |
| Countries That End in NIA | 0 | - | 4.92 | 107,849 |
| Countries That End in BIA | 0 | - | 4.92 | 146,221 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 164,275 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 117,180 |
| Countries That End in RIA | 0 | - | 4.92 | 124,870 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 108,634 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 221,938 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 130,722 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 122,946 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 88,560 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 73,046 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 50,909 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 101,063 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 122,949 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 47,996 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 51,089 |
| Countries that End in L | 0 | - | 4.94 | 154,359 |
| "Land" Countries | 0 | - | 4.98 | 304,090 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 203,523 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,595 |
| City to Country Quiz #1 | 0 | - | 4.97 | 153,725 |
| City to Country Quiz #3 | 0 | - | 4.88 | 107,693 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 77,397 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 224,882 |
