| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,618,360 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,777 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,579 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,129 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,381,930 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,099,657 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 449,963 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,395 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,063 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,339 |
| Countries with Four Letters | 0 | - | 4.99 | 421,921 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,375 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,419 |
| Landlocked Countries | 0 | - | 4.99 | 419,571 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 975,749 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,106 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,181 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 179,322 |
| Country Chain | 0 | - | 4.96 | 216,949 |
| Countries by Emojis | 0 | - | 4.99 | 239,251 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,818 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,201 |
| Islands by Country #1 | 0 | - | 4.88 | 175,186 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,439 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,787 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,674 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,760,962 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,754 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,388 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,338 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,317 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,729 |
| Name a Valid Country #1 | 0 | - | 4.99 | 289,217 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,351 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,247 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,631 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,160 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,261 |
| Himalayan Countries | 0 | - | 4.95 | 137,705 |
| Andean Countries | 0 | - | 4.95 | 84,073 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,311 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,829 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,939 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,429 |
| Danube Countries | 0 | - | 4.97 | 71,728 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,651 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,122 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,764 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,841 |
| European Landlocked Countries | 0 | - | 4.99 | 146,848 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,215 |
| Countries with the Most Species | 0 | - | 4.99 | 102,989 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,376 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,452 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,611 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,357 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,029 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,424 |
| Countries in the Alps | 0 | - | 4.87 | 117,794 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,204 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,504 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,458 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,152 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,172 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,763 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,357 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,250 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,012 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,612 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,517 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,367 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,978 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,244 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,265 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,314 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,101 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,611 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,637 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,656 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,392 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,034 |
| Largest Countries By Category | 0 | - | 4.97 | 157,759 |
| Countries by Countries | 0 | - | 4.96 | 62,913 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,305 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,176 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,393 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,540 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,770 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,520 |
| Island Countries | 0 | - | 4.99 | 710,033 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,768 |
| Northernmost Countries | 0 | - | 4.99 | 360,778 |
| Countries of South America | 0 | - | 5.00 | 923,841 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,357 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,627 |
| "Land" Countries | 0 | - | 4.98 | 335,950 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,757 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,067 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,020 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,699 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,382 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,166 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,784 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,764 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,977 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,674 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,023 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,548 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 135,580 |
| Random Countries by Borders | 0 | - | 4.99 | 82,346 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,855 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 239,436 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,208 |
| Countries with Megacities | 0 | - | 4.99 | 262,092 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,058 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,093 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,355 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,130 |
| Countries by Official Language | 0 | - | 4.95 | 194,766 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,699 |
| Countries in their Native Language | 0 | - | 4.99 | 198,312 |
| Independence from Whom | 0 | - | 4.99 | 211,483 |
| Subdivisions by Country | 0 | - | 4.86 | 50,316 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,829 |
| Megadiverse Countries | 0 | - | 4.96 | 134,813 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,636 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,213 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,789 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,033 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,784 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,419 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,064 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,881 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,521 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,009 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,131 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,750 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,026 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,818 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,186 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,366 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,372 |
| World Map Quiz | 0 | - | 4.81 | 64,699 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 137,589 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,889 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,100 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,638 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,007 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,726 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,527 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,600 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,745 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,888 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,305 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,340 |
| Widest Countries East to West | 0 | - | 4.92 | 129,430 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,401 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,032 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,019 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,568 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,299 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,619 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,267 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,738 |
| Countries with Double Letters | 0 | - | 4.97 | 95,192 |
| Countries that End in N | 0 | - | 4.95 | 170,200 |
| Countries with Five Letters | 0 | - | 4.96 | 280,857 |
| Countries with Six Letters | 0 | - | 4.94 | 212,635 |
| Countries with W | 0 | - | 4.97 | 159,592 |
| Countries with Z | 0 | - | 4.98 | 290,091 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,833 |
| Countries That End in U | 0 | - | 4.95 | 120,447 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,851 |
| Countries that End in O | 0 | - | 4.92 | 159,235 |
| Countries that End in R | 0 | - | 4.87 | 118,759 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,537 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,448 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,193 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,137 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,738 |
| Countries That End in Y | 0 | - | 4.91 | 185,672 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,355 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,501 |
| Countries that End in I | 0 | - | 4.94 | 134,905 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,312 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,612 |
| Countries That End in NIA | 0 | - | 4.92 | 109,552 |
| Countries That End in BIA | 0 | - | 4.93 | 148,899 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,796 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,121 |
| Countries That End in RIA | 0 | - | 4.93 | 126,578 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,707 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,872 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,309 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,693 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,223 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,370 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,729 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,298 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,206 |
