| Word Scramble - Countries | 0 | - | 4.86 | 2,099,101 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,248 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,914 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,259 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,323 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,616,566 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,356,386 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 449,303 |
| Countries with Four Letters | 0 | - | 4.99 | 421,741 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,285 |
| Landlocked Countries | 0 | - | 4.99 | 419,252 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,727 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 174,322 |
| Country Chain | 0 | - | 4.96 | 216,872 |
| Countries by Emojis | 0 | - | 4.99 | 239,007 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,767 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,043 |
| Islands by Country #1 | 0 | - | 4.88 | 175,145 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,403 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,752 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,646 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,758,776 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,946 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,913 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,519 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,607 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,950 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,188 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,096 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,488 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,054 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,400 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,128 |
| Himalayan Countries | 0 | - | 4.95 | 137,549 |
| Andean Countries | 0 | - | 4.95 | 84,002 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,272 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,744 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,890 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,392 |
| Danube Countries | 0 | - | 4.97 | 71,700 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,609 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,094 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,705 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,784 |
| European Landlocked Countries | 0 | - | 4.99 | 146,810 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,174 |
| Countries with the Most Species | 0 | - | 4.99 | 102,947 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,325 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,437 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,598 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,328 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,006 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,394 |
| Countries in the Alps | 0 | - | 4.87 | 117,740 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,168 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,432 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,440 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,028 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,138 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,740 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,320 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,220 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,983 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,581 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,503 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,351 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,956 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,211 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,237 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,252 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,084 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,585 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,570 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,526 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,301 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,016 |
| Largest Countries By Category | 0 | - | 4.97 | 157,694 |
| Countries by Countries | 0 | - | 4.96 | 62,866 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,256 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,172 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,357 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,262 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,686 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,272 |
| Island Countries | 0 | - | 4.99 | 709,900 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,397 |
| Northernmost Countries | 0 | - | 4.99 | 360,620 |
| Countries of South America | 0 | - | 5.00 | 923,303 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,679 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,328 |
| "Land" Countries | 0 | - | 4.98 | 335,869 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.91 | 12,778 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,658 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,990 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,981 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,669 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,343 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,397 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,535 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,106 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,683 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,656 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,873 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,604 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,008 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 77,983 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,547 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,996 |
| Random Countries by Borders | 0 | - | 4.99 | 82,313 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,785 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,122 |
| Countries with Megacities | 0 | - | 4.99 | 261,302 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,982 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,047 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,261 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,071 |
| Countries by Official Language | 0 | - | 4.95 | 194,690 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,614 |
| Countries in their Native Language | 0 | - | 4.99 | 198,244 |
| Independence from Whom | 0 | - | 4.99 | 211,395 |
| Subdivisions by Country | 0 | - | 4.86 | 50,299 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,768 |
| Megadiverse Countries | 0 | - | 4.96 | 134,790 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,586 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,202 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,766 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,027 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,742 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,400 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,025 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,861 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,506 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,000 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,052 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,734 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,008 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,798 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,169 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,338 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,283 |
| World Map Quiz | 0 | - | 4.81 | 64,640 |
| Empty World Map without 20 Random Countries | 0 | - | 4.93 | 137,465 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,738 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,065 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,578 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,966 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,681 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,422 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,553 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,707 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,859 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,290 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,317 |
| Widest Countries East to West | 0 | - | 4.92 | 129,404 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,388 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,989 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,005 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,539 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,257 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,578 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,249 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,732 |
| Countries with Double Letters | 0 | - | 4.97 | 95,143 |
| Countries that End in N | 0 | - | 4.95 | 170,094 |
| Countries with Five Letters | 0 | - | 4.96 | 280,540 |
| Countries with Six Letters | 0 | - | 4.94 | 212,545 |
| Countries with W | 0 | - | 4.97 | 159,549 |
| Countries with Z | 0 | - | 4.98 | 289,883 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,795 |
| Countries That End in U | 0 | - | 4.95 | 120,425 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,798 |
| Countries that End in O | 0 | - | 4.92 | 159,216 |
| Countries that End in R | 0 | - | 4.87 | 118,748 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,524 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,386 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,149 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,106 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,697 |
| Countries That End in Y | 0 | - | 4.91 | 185,657 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,279 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,464 |
| Countries that End in I | 0 | - | 4.94 | 134,887 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,136 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,593 |
| Countries That End in NIA | 0 | - | 4.92 | 109,532 |
| Countries That End in BIA | 0 | - | 4.93 | 148,869 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,757 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,091 |
| Countries That End in RIA | 0 | - | 4.93 | 126,559 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,662 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,780 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,277 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,642 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,172 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,345 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,704 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,270 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,161 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,213 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,571 |
