| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,654,232 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 743,116 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,894,578 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,125,250 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,670 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,292 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,512 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,729 |
| Countries of Africa | 0 | - | 5.00 | 2,560,704 |
| Countries with Four Letters | 0 | - | 4.99 | 425,940 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,081 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,973 |
| Landlocked Countries | 0 | - | 4.99 | 426,096 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 982,606 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,952 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,086 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,458 |
| Country Chain | 0 | - | 4.96 | 218,488 |
| Countries by Emojis | 0 | - | 4.99 | 242,534 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,605 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,876 |
| Islands by Country #1 | 0 | - | 4.90 | 176,377 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,252 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,572 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,407 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,805,732 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,028 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,081 |
| Name a Valid Country #1 | 0 | - | 4.99 | 295,435 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,259 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,251 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,112 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,276 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,384 |
| Himalayan Countries | 0 | - | 4.93 | 140,338 |
| Andean Countries | 0 | - | 4.94 | 85,519 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,664 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,079 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,237 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,469 |
| Danube Countries | 0 | - | 4.97 | 72,431 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,626 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,861 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,170 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,651 |
| European Landlocked Countries | 0 | - | 4.99 | 147,627 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,339 |
| Countries with the Most Species | 0 | - | 4.99 | 103,581 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,435 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,783 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,892 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,856 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,590 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,035 |
| Countries in the Alps | 0 | - | 4.87 | 118,809 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,683 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,913 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,977 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,041 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,983 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,279 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,431 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,882 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,440 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,198 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,893 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,754 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,574 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,817 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,907 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,896 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,632 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 74,159 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,706 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,809 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,205 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,528 |
| Largest Countries By Category | 0 | - | 4.97 | 158,895 |
| Countries by Countries | 0 | - | 4.96 | 63,664 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,288 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,410 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,677 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,126 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,628 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,743 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,802 |
| Island Countries | 0 | - | 4.99 | 712,635 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,984 |
| Northernmost Countries | 0 | - | 4.99 | 364,111 |
| Countries of South America | 0 | - | 5.00 | 932,970 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,726 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,978 |
| "Land" Countries | 0 | - | 4.98 | 338,438 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,769 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,739 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,687 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,115 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,942 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,298 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,496 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,706 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,246 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,164 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,785 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,135 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,561 |
| Random Countries by Borders | 0 | - | 4.99 | 83,109 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,684 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.96 | 242,903 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,221 |
| Countries with Megacities | 0 | - | 4.99 | 267,245 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,907 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,171 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,221 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,284 |
| Countries by Official Language | 0 | - | 4.95 | 196,038 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,680 |
| Countries in their Native Language | 0 | - | 4.99 | 199,769 |
| Independence from Whom | 0 | - | 4.99 | 213,122 |
| Subdivisions by Country | 0 | - | 4.87 | 50,625 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,477 |
| Megadiverse Countries | 0 | - | 4.96 | 135,293 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,975 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,546 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,705 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,232 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,295 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,862 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,139 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,575 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,081 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,262 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,575 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,389 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,449 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,157 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,593 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,887 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,408 |
| World Map Quiz | 0 | - | 4.81 | 65,769 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,047 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,375 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,729 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,303 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,114 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,583 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,640 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,461 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,561 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,762 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,712 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,766 |
| Widest Countries East to West | 0 | - | 4.92 | 130,593 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,603 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,277 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,525 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,073 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,001 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,501 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,509 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,896 |
| Countries with Double Letters | 0 | - | 4.96 | 97,124 |
| Countries that End in N | 0 | - | 4.95 | 171,996 |
| Countries with Five Letters | 0 | - | 4.96 | 283,936 |
| Countries with Six Letters | 0 | - | 4.94 | 214,534 |
| Countries with W | 0 | - | 4.96 | 160,991 |
| Countries with Z | 0 | - | 4.98 | 292,512 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,320 |
| Countries That End in U | 0 | - | 4.95 | 121,209 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,144 |
| Countries that End in O | 0 | - | 4.92 | 160,232 |
| Countries that End in R | 0 | - | 4.87 | 119,196 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,956 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,898 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,182 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,849 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,779 |
| Countries That End in Y | 0 | - | 4.91 | 186,099 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,489 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,299 |
| Countries that End in I | 0 | - | 4.94 | 135,333 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,654 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,070 |
| Countries That End in NIA | 0 | - | 4.92 | 110,079 |
| Countries That End in BIA | 0 | - | 4.93 | 149,597 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,568 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,790 |
| Countries That End in RIA | 0 | - | 4.93 | 127,071 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,407 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,642 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,217 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,651 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,207 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,821 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,343 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,544 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,929 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,661 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,755 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,448 |
