| Countries of South America | 0 | - | 5.00 | 781,621 |
| Countries of Oceania | 0 | - | 5.00 | 879,241 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,098,960 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,546,712 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,355,841 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 316,236 |
| Countries on the Equator | 0 | - | 4.82 | 131,414 |
| Members of the Arab League | 0 | - | 4.81 | 58,696 |
| Sahara Desert Countries | 0 | - | 4.97 | 124,829 |
| Himalayan Countries | 0 | - | 4.95 | 102,119 |
| Andean Countries | 0 | - | 4.90 | 56,711 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,529 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,464 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,760 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,433 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,618 |
| Danube Countries | 0 | - | 4.97 | 56,310 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,325 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,541 |
| Countries with the Best Passports | 0 | - | 4.86 | 70,143 |
| Countries with the Worst Passports | 0 | - | 4.86 | 48,653 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,041 |
| European Landlocked Countries | 0 | - | 4.99 | 114,776 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,606 |
| Countries with the Most Species | 0 | - | 4.99 | 89,050 |
| Countries 197 to 205 | 0 | - | 4.87 | 55,674 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,392 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,765 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,649 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,043 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,400 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,580 |
| Countries in the Alps | 0 | - | 4.82 | 101,477 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,483 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,510 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,040 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,599 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,233 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 86,779 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 88,945 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,680 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,008 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,053 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,814 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,294 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,362 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 94,835 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,406 |
| Countries with the Most Grassland | 0 | - | 4.93 | 68,872 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,296 |
| Countries with the Most Climate Zones | 0 | - | 4.97 | 60,878 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,859 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 191,863 |
| World Countries - Blind Typing | 0 | - | 5.00 | 70,977 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,883 |
| Largest Countries By Category | 0 | - | 4.96 | 143,675 |
| Countries by Countries | 0 | - | 4.96 | 53,941 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,005,897 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,312 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 77,151 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,045 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 350,897 |
| Island Countries Quiz | 0 | - | 4.99 | 637,274 |
| Biggest Countries by Area | 0 | - | 5.00 | 922,928 |
| Northernmost Countries | 0 | - | 4.99 | 324,919 |
| Countries of North America Quiz | 0 | - | 5.00 | 867,326 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 123,829 |
| Countries with Megacities | 0 | - | 4.99 | 194,248 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,007 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,639 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,382 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,499 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,525 |
| Countries by Official Language | 0 | - | 4.95 | 153,202 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,010 |
| Countries in their Native Language | 0 | - | 4.98 | 176,497 |
| Independence from Whom | 0 | - | 4.99 | 182,538 |
| Subdivisions by Country | 0 | - | 4.82 | 46,124 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 111,620 |
| Megadiverse Countries | 0 | - | 4.96 | 124,599 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 89,671 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 105,877 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,073 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 129,603 |
| Most Recently-Settled Countries | 0 | - | 4.91 | 48,529 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,385 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,177 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,406 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,916 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 42,669 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,717 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,246 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,436 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,812 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,639 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 79,583 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,594 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,055 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 89,947 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 106,866 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,163 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,446 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,722 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,271 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,167 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,689 |
| Widest Countries East to West | 0 | - | 4.93 | 118,355 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,653 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,720 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,036 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,653 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 117,500 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,392 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,220 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,798 |
| Countries with Double Letters | 0 | - | 4.96 | 66,302 |
| Countries that End in N | 0 | - | 4.94 | 130,707 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 227,180 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 184,986 |
| Countries with W | 0 | - | 4.97 | 121,028 |
| Countries with Z | 0 | - | 4.98 | 241,635 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,207 |
| Countries That End in U | 0 | - | 4.94 | 106,523 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.96 | 87,903 |
| Countries that End in O | 0 | - | 4.92 | 146,169 |
| Countries that End in R | 0 | - | 4.85 | 95,957 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,737 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,210 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,675 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,425 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,360 |
| Countries That End in Y | 0 | - | 4.90 | 160,693 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,392 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,623 |
| Countries that End in I | 0 | - | 4.92 | 114,075 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,195 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,706 |
| Countries That End in NIA | 0 | - | 4.93 | 100,180 |
| Countries That End in BIA | 0 | - | 4.91 | 125,170 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,211 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 108,900 |
| Countries That End in RIA | 0 | - | 4.89 | 100,218 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,599 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 198,245 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,425 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 109,219 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,134 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,371 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 95,746 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,272 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,583 |
| Countries that End in L | 0 | - | 4.95 | 133,193 |
| "Land" Countries | 0 | - | 4.98 | 287,590 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,197 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,049 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,606 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,383 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 70,990 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 205,883 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 156,761 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,543 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 131,419 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 191,747 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 139,809 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 65,364 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,374 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,803 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,286 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,300,000 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,116 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,028,399 |
| One Border Countries | 0 | - | 4.98 | 405,938 |
| Countries With One Word and Three A's | 0 | - | 4.83 | 30,089 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,347,869 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,188 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,084 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,069 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,396 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,274 |
| Countries by National Anthem | 0 | - | 4.94 | 61,580 |
| NATO Countries Quiz | 0 | - | 4.98 | 222,761 |
| EU Countries Quiz | 0 | - | 4.99 | 225,597 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,163 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,073 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,253 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 223,649 |
| Countries with Nuclear Weapons | 0 | - | 4.88 | 215,419 |
| German-Speaking Countries | 0 | - | 4.87 | 117,068 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,189 |
| Countries with Wild Penguins | 0 | - | 4.93 | 89,546 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 127,125 |
| Top Five Countries by Religion | 0 | - | 4.90 | 139,255 |
| Solve the Secret Country #2 | 0 | - | 4.91 | 85,726 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 80,891 |
| Olympic Host Countries | 0 | - | 4.98 | 160,066 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 97,521 |
| Anagram Chain - Countries | 0 | - | 4.98 | 95,186 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 90,609 |
| Countries with the Most Elite Universities | 0 | - | 4.93 | 98,003 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 228,329 |
