| Word Scramble - Countries | 0 | - | 4.87 | 2,106,890 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,699 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,181 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,945 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,071 |
| Country Chain | 0 | - | 4.96 | 217,763 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,636,876 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,643,890 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,861 |
| Countries with Four Letters | 0 | - | 4.99 | 423,735 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,157 |
| Landlocked Countries | 0 | - | 4.99 | 422,749 |
| Capital Cities Chain | 0 | - | 4.84 | 83,035 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,267 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,582 |
| Countries by Emojis | 0 | - | 4.99 | 240,663 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,195 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 322,093 |
| Islands by Country #1 | 0 | - | 4.90 | 175,638 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,794 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,167 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,921 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,784,170 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 217,663 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,872 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,766 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,743 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,892 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,884 |
| Name a Valid Country #6 | 0 | - | 4.94 | 130,126 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 729,582 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,905 |
| Himalayan Countries | 0 | - | 4.95 | 139,077 |
| Andean Countries | 0 | - | 4.93 | 84,824 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,051 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,147 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,630 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,945 |
| Danube Countries | 0 | - | 4.97 | 72,110 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,148 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,515 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,478 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,974 |
| European Landlocked Countries | 0 | - | 4.99 | 147,246 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,788 |
| Countries with the Most Species | 0 | - | 4.99 | 103,323 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,918 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,636 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,757 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,604 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,334 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,753 |
| Countries in the Alps | 0 | - | 4.87 | 118,328 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,619 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,223 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,729 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,688 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,605 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,010 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,768 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,579 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,231 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,938 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,701 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,578 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,308 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,547 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,612 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,087 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,377 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,570 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,221 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,361 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,363 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,295 |
| Largest Countries By Category | 0 | - | 4.97 | 158,361 |
| Countries by Countries | 0 | - | 4.96 | 63,330 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,790 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,313 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,588 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,761 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,303 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,744 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,809 |
| Island Countries | 0 | - | 4.99 | 711,316 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,867 |
| Northernmost Countries | 0 | - | 4.99 | 362,338 |
| Countries of South America | 0 | - | 5.00 | 928,466 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,290 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,670 |
| "Land" Countries | 0 | - | 4.98 | 337,564 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,269 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,414 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,345 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,900 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,649 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,621 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,025 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,394 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,947 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,993 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,819 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,271 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,296 |
| Random Countries by Borders | 0 | - | 4.99 | 82,735 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,573 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,127 |
| Countries with Megacities | 0 | - | 4.99 | 265,112 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,943 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,602 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,204 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,671 |
| Countries by Official Language | 0 | - | 4.95 | 195,412 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,597 |
| Countries in their Native Language | 0 | - | 4.99 | 199,192 |
| Independence from Whom | 0 | - | 4.99 | 212,289 |
| Subdivisions by Country | 0 | - | 4.87 | 50,467 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,865 |
| Megadiverse Countries | 0 | - | 4.96 | 135,077 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,221 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,396 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,275 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,132 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,229 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,644 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,575 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,361 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,698 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,173 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,852 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,932 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,250 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,005 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,401 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,535 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,448 |
| World Map Quiz | 0 | - | 4.81 | 65,199 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 138,850 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,689 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,425 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,249 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,367 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,079 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,467 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,982 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,090 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,368 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,485 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,628 |
| Widest Countries East to West | 0 | - | 4.92 | 129,726 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,475 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,473 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,152 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,820 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,665 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,943 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,401 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,815 |
| Countries with Double Letters | 0 | - | 4.96 | 96,417 |
| Countries that End in N | 0 | - | 4.95 | 171,295 |
| Countries with Five Letters | 0 | - | 4.96 | 282,796 |
| Countries with Six Letters | 0 | - | 4.94 | 213,742 |
| Countries with W | 0 | - | 4.97 | 160,455 |
| Countries with Z | 0 | - | 4.98 | 291,652 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,821 |
| Countries That End in U | 0 | - | 4.95 | 120,910 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,587 |
| Countries that End in O | 0 | - | 4.92 | 159,567 |
| Countries that End in R | 0 | - | 4.87 | 119,005 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,767 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,258 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,773 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,547 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,463 |
| Countries That End in Y | 0 | - | 4.91 | 185,925 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,023 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,943 |
| Countries that End in I | 0 | - | 4.94 | 135,143 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,206 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,863 |
| Countries That End in NIA | 0 | - | 4.92 | 109,842 |
| Countries That End in BIA | 0 | - | 4.93 | 149,278 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,191 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,488 |
| Countries That End in RIA | 0 | - | 4.93 | 126,862 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,081 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,814 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,806 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,239 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,791 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,626 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,086 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,463 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,597 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,473 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,380 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,068 |
| Countries that End in L | 0 | - | 4.94 | 156,900 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,137 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,286 |
