| Countries by Former Name | 0 | - | 4.99 | 125,142 |
| Independence from Whom | 0 | - | 4.99 | 211,745 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,010 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,490 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,236 |
| Countries by Founding Story | 0 | - | 4.95 | 77,233 |
| Cities by Former Name | 0 | - | 4.83 | 91,584 |
| Recently Independent Countries | 0 | - | 4.98 | 159,264 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,942 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,289 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,890 |
| Historical City to Country | 0 | - | 4.84 | 78,541 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,469,938 |
| Landlocked Countries | 0 | - | 4.99 | 420,662 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,430 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,643 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,305 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,201 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,765 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,262 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,548 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,263 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,784 |
| Himalayan Countries | 0 | - | 4.95 | 138,139 |
| Andean Countries | 0 | - | 4.95 | 84,289 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,511 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,376 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,146 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,590 |
| Danube Countries | 0 | - | 4.97 | 71,847 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,815 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,252 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,003 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,455 |
| European Landlocked Countries | 0 | - | 4.99 | 146,983 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,398 |
| Countries with the Most Species | 0 | - | 4.99 | 103,103 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,552 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,626 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,511 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,664 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,453 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,125 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,517 |
| Countries in the Alps | 0 | - | 4.87 | 117,973 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,676 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,742 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,551 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,464 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,327 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,838 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,480 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,348 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,084 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,711 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,571 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,425 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,079 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,359 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,371 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,569 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,185 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,699 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,835 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,242 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,708 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,116 |
| Largest Countries By Category | 0 | - | 4.97 | 157,947 |
| Countries by Countries | 0 | - | 4.97 | 63,026 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,479 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,509 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,221 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,264 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,516 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,775 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,447 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,115 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,817 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,519 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,404 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,084 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,324 |
| Island Countries | 0 | - | 4.99 | 710,467 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,046 |
| Northernmost Countries | 0 | - | 4.99 | 361,291 |
| Countries of South America | 0 | - | 5.00 | 925,275 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,277 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,341 |
| "Land" Countries | 0 | - | 4.98 | 336,610 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,754 |
| Countries by Independence Day | 0 | - | 4.61 | 52,742 |
| Former Countries by Capital | 0 | - | 4.45 | 127,485 |
| Former Countries | 0 | - | 4.75 | 133,809 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,076 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,895 |
| Battle to Country | 0 | - | 4.91 | 53,358 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,781 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,497 |
| Countries with Megacities | 0 | - | 4.99 | 263,524 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,347 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,270 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,630 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,305 |
| Countries by Official Language | 0 | - | 4.95 | 194,963 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,983 |
| Countries in their Native Language | 0 | - | 4.99 | 198,476 |
| Subdivisions by Country | 0 | - | 4.86 | 50,370 |
| Megadiverse Countries | 0 | - | 4.96 | 134,900 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,822 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,267 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,851 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,061 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,933 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,943 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,569 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,045 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,367 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,798 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,103 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,877 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,258 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,422 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,727 |
| World Map Quiz | 0 | - | 4.81 | 64,891 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,474 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,204 |
| Countries by Road Signs | 0 | - | 4.98 | 53,845 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,810 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,108 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,840 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,813 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,743 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,875 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,180 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,360 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,451 |
| Widest Countries East to West | 0 | - | 4.92 | 129,518 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,418 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,187 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,067 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,646 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,422 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,716 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,314 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,767 |
| Countries with Double Letters | 0 | - | 4.97 | 95,547 |
| Countries that End in N | 0 | - | 4.95 | 170,567 |
| Countries with Five Letters | 0 | - | 4.96 | 281,581 |
| Countries with Six Letters | 0 | - | 4.94 | 212,970 |
| Countries with W | 0 | - | 4.97 | 159,876 |
| Countries with Z | 0 | - | 4.98 | 290,813 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,165 |
| Countries That End in U | 0 | - | 4.95 | 120,588 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,089 |
| Countries that End in O | 0 | - | 4.92 | 159,334 |
| Countries that End in R | 0 | - | 4.87 | 118,829 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,606 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,685 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,368 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,261 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,878 |
| Countries That End in Y | 0 | - | 4.91 | 185,755 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,575 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,652 |
| Countries that End in I | 0 | - | 4.94 | 134,979 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,766 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,699 |
| Countries That End in NIA | 0 | - | 4.92 | 109,647 |
| Countries That End in BIA | 0 | - | 4.93 | 149,011 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,901 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,240 |
| Countries That End in RIA | 0 | - | 4.93 | 126,672 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,806 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,173 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,458 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,849 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,389 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,445 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,835 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,374 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,333 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,306 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,049 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,768 |
| Countries that End in L | 0 | - | 4.94 | 156,683 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,896 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,205 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,921 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,842 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,891 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,459 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,424 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,829 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,360 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,864 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,735 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,027 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,684 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,646 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,771 |
