| Independence from Whom | 0 | - | 4.99 | 211,586 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,887 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,449 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,124 |
| Countries by Founding Story | 0 | - | 4.95 | 77,155 |
| Recently Independent Countries | 0 | - | 4.98 | 159,165 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,796 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,084 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,699 |
| Countries by Former Name | 0 | - | 4.99 | 125,054 |
| Historical City to Country | 0 | - | 4.84 | 78,499 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,413,788 |
| Landlocked Countries | 0 | - | 4.99 | 419,906 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,763,644 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,541 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,214 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,160 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,690 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,223 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,516 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,187 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,426 |
| Himalayan Countries | 0 | - | 4.95 | 137,856 |
| Andean Countries | 0 | - | 4.95 | 84,138 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,359 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,922 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,000 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,468 |
| Danube Countries | 0 | - | 4.97 | 71,759 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,696 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,156 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,846 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,923 |
| European Landlocked Countries | 0 | - | 4.99 | 146,889 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,271 |
| Countries with the Most Species | 0 | - | 4.99 | 103,028 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,432 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,379 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,465 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,635 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,389 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,064 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,461 |
| Countries in the Alps | 0 | - | 4.87 | 117,871 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 96,016 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,586 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,487 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,372 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,228 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,795 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,394 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,273 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,037 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,642 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,535 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,383 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,008 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,292 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,305 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,419 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,132 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,639 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,696 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,870 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,503 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,058 |
| Largest Countries By Category | 0 | - | 4.97 | 157,819 |
| Countries by Countries | 0 | - | 4.97 | 62,944 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,369 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,490 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,186 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,050 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,495 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,662 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,406 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,880 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,745 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,444 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,837 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,871 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,899 |
| Island Countries | 0 | - | 4.99 | 710,164 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,171 |
| Northernmost Countries | 0 | - | 4.99 | 360,959 |
| Countries of South America | 0 | - | 5.00 | 924,298 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,083 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,979 |
| "Land" Countries | 0 | - | 4.98 | 336,049 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,689 |
| Countries by Independence Day | 0 | - | 4.61 | 52,727 |
| Former Countries by Capital | 0 | - | 4.45 | 127,439 |
| Former Countries | 0 | - | 4.75 | 133,746 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,378,127 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,796 |
| Battle to Country | 0 | - | 4.91 | 53,273 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,725 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,311 |
| Countries with Megacities | 0 | - | 4.99 | 262,731 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,151 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,149 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,453 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,193 |
| Countries by Official Language | 0 | - | 4.95 | 194,831 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,793 |
| Countries in their Native Language | 0 | - | 4.99 | 198,377 |
| Subdivisions by Country | 0 | - | 4.86 | 50,338 |
| Megadiverse Countries | 0 | - | 4.96 | 134,838 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,705 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,227 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,804 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,044 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,845 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,903 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,537 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,027 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,237 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,770 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,055 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,838 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,222 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,389 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,493 |
| World Map Quiz | 0 | - | 4.81 | 64,774 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,093 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,140 |
| Countries by Road Signs | 0 | - | 4.98 | 53,754 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,689 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,042 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,771 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,632 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,642 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,783 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,918 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,331 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,374 |
| Widest Countries East to West | 0 | - | 4.92 | 129,456 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,407 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,093 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,038 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,596 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,338 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,656 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,287 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,748 |
| Countries with Double Letters | 0 | - | 4.97 | 95,294 |
| Countries that End in N | 0 | - | 4.95 | 170,308 |
| Countries with Five Letters | 0 | - | 4.96 | 281,096 |
| Countries with Six Letters | 0 | - | 4.94 | 212,730 |
| Countries with W | 0 | - | 4.97 | 159,653 |
| Countries with Z | 0 | - | 4.98 | 290,525 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,908 |
| Countries That End in U | 0 | - | 4.95 | 120,486 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,924 |
| Countries that End in O | 0 | - | 4.92 | 159,264 |
| Countries that End in R | 0 | - | 4.87 | 118,780 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,554 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,521 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,278 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,178 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,787 |
| Countries That End in Y | 0 | - | 4.91 | 185,694 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,456 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,551 |
| Countries that End in I | 0 | - | 4.94 | 134,925 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,656 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,639 |
| Countries That End in NIA | 0 | - | 4.92 | 109,586 |
| Countries That End in BIA | 0 | - | 4.93 | 148,936 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,839 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,164 |
| Countries That End in RIA | 0 | - | 4.93 | 126,603 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,742 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,977 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,361 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,741 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,272 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,392 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,756 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,337 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,249 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,255 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,940 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,668 |
| Countries that End in L | 0 | - | 4.94 | 156,620 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,532 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,177 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,894 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,792 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,842 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,976 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,328 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,747 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,259 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,758 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,657 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,000 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,625 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,738 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,819 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,123 |
