| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,592,658 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 712,880 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,996,151 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,089,912 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,180 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,544 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,416 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,425 |
| Countries of Africa | 0 | - | 5.00 | 2,511,939 |
| Countries with Four Letters | 0 | - | 4.99 | 419,074 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,076 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,395 |
| Landlocked Countries | 0 | - | 4.99 | 414,526 |
| Countries of the World - One Minute Sprint | 0 | - | 4.35 | 957,015 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,622 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,507 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,629 |
| Country Chain | 0 | - | 4.96 | 215,919 |
| Countries by Emojis | 0 | - | 4.99 | 236,968 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,206 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,439 |
| Islands by Country #1 | 0 | - | 4.87 | 174,590 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,999 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,348 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,387 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,724,465 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,183 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,112 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,237 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,778 |
| Name a Valid Country #4 | 0 | - | 4.97 | 252,076 |
| Name a Valid Country #5 | 0 | - | 4.99 | 190,114 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,669 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,975 |
| Himalayan Countries | 0 | - | 4.95 | 135,685 |
| Andean Countries | 0 | - | 4.94 | 83,020 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,370 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,423 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,065 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,732 |
| Danube Countries | 0 | - | 4.97 | 71,173 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,888 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,633 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,693 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,596 |
| European Landlocked Countries | 0 | - | 4.99 | 145,874 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,354 |
| Countries with the Most Species | 0 | - | 4.99 | 95,297 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,513 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,234 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,403 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,012 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,652 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,021 |
| Countries in the Alps | 0 | - | 4.86 | 116,974 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,678 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,442 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,103 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,507 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,293 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,084 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,688 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,835 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,585 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,148 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,230 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,097 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,529 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,825 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,825 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,274 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,732 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,307 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,928 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,804 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,977 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,682 |
| Largest Countries By Category | 0 | - | 4.97 | 156,905 |
| Countries by Countries | 0 | - | 4.96 | 62,354 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,544 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,996 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,356 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,850 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,097 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,468 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,302 |
| Island Countries | 0 | - | 4.99 | 707,977 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,718 |
| Northernmost Countries | 0 | - | 4.99 | 358,235 |
| Countries of South America | 0 | - | 5.00 | 916,347 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,544 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,619 |
| "Land" Countries | 0 | - | 4.98 | 333,907 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,582 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,531 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,432 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,405 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,930 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,949 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,861 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,729 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,891 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,101 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,586 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,634 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,658 |
| Random Countries by Borders | 0 | - | 4.99 | 81,757 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,443 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 236,925 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,684 |
| Countries with Megacities | 0 | - | 4.99 | 247,701 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,535 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,227 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,926 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,168 |
| Countries by Official Language | 0 | - | 4.95 | 192,965 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,415 |
| Countries in their Native Language | 0 | - | 4.99 | 196,821 |
| Independence from Whom | 0 | - | 4.99 | 209,933 |
| Subdivisions by Country | 0 | - | 4.86 | 50,111 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,924 |
| Megadiverse Countries | 0 | - | 4.97 | 133,972 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,995 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,964 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,478 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,884 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,781 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,065 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,208 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,226 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,258 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,767 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,757 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,461 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,564 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,551 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,743 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,073 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,865 |
| World Map Quiz | 0 | - | 4.81 | 63,672 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 135,301 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,209 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,429 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,593 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,370 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,109 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,064 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,006 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,200 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,405 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,017 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,451 |
| Widest Countries East to West | 0 | - | 4.92 | 128,951 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,258 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,359 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,614 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,776 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,718 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,148 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 73,813 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,623 |
| Countries with Double Letters | 0 | - | 4.96 | 93,568 |
| Countries that End in N | 0 | - | 4.94 | 157,051 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,884 |
| Countries with Six Letters | 0 | - | 4.93 | 210,551 |
| Countries with W | 0 | - | 4.97 | 158,349 |
| Countries with Z | 0 | - | 4.98 | 288,081 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,670 |
| Countries That End in U | 0 | - | 4.95 | 119,585 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,767 |
| Countries that End in O | 0 | - | 4.92 | 158,615 |
| Countries that End in R | 0 | - | 4.87 | 118,334 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,903 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,280 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,463 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,587 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,127 |
| Countries That End in Y | 0 | - | 4.90 | 185,253 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,515 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,808 |
| Countries that End in I | 0 | - | 4.94 | 134,495 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,345 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,252 |
| Countries That End in NIA | 0 | - | 4.92 | 109,073 |
| Countries That End in BIA | 0 | - | 4.92 | 147,794 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,176 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,580 |
| Countries That End in RIA | 0 | - | 4.93 | 126,150 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,107 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,545 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,612 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,976 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,468 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,977 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,210 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,734 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,608 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,855 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,248 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,917 |
