| Countries by Former Name | 0 | - | 4.99 | 124,642 |
| Independence from Whom | 0 | - | 4.99 | 210,555 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,270 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,193 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,522 |
| Countries by Founding Story | 0 | - | 4.95 | 76,839 |
| Cities by Former Name | 0 | - | 4.84 | 91,231 |
| Recently Independent Countries | 0 | - | 4.98 | 158,338 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,088 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,037 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,736 |
| Historical City to Country | 0 | - | 4.84 | 78,305 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,139,002 |
| Landlocked Countries | 0 | - | 4.99 | 416,347 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,738,405 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,743 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,640 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,511 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,869 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,744 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,002 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,511 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,785 |
| Himalayan Countries | 0 | - | 4.95 | 136,378 |
| Andean Countries | 0 | - | 4.95 | 83,413 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,678 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,904 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,368 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,969 |
| Danube Countries | 0 | - | 4.97 | 71,367 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,159 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,822 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,093 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,045 |
| European Landlocked Countries | 0 | - | 4.99 | 146,097 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,709 |
| Countries with the Most Species | 0 | - | 4.99 | 100,517 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,854 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,070 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,315 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,490 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,134 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,789 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,160 |
| Countries in the Alps | 0 | - | 4.86 | 117,294 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,874 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,818 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,233 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,711 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,776 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,223 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,950 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,973 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,775 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,309 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,340 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,191 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,698 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,969 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,979 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,649 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,871 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,406 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,200 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,822 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,489 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,794 |
| Largest Countries By Category | 0 | - | 4.97 | 157,214 |
| Countries by Countries | 0 | - | 4.96 | 62,565 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,835 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,353 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,069 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,238 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,405 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,149 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,102 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,621 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,367 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,056 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,578 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,691 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,544 |
| Island Countries | 0 | - | 4.99 | 708,713 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,956 |
| Northernmost Countries | 0 | - | 4.99 | 359,212 |
| Countries of South America | 0 | - | 5.00 | 919,262 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,127 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,674 |
| "Land" Countries | 0 | - | 4.98 | 334,434 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,881 |
| Countries by Independence Day | 0 | - | 4.61 | 52,670 |
| Former Countries by Capital | 0 | - | 4.45 | 127,231 |
| Former Countries | 0 | - | 4.75 | 132,942 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,693 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,390 |
| Battle to Country | 0 | - | 4.91 | 52,877 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,436 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,186 |
| Countries with Megacities | 0 | - | 4.99 | 248,762 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,045 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,500 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,418 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,445 |
| Countries by Official Language | 0 | - | 4.95 | 193,917 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,408 |
| Countries in their Native Language | 0 | - | 4.99 | 197,550 |
| Subdivisions by Country | 0 | - | 4.86 | 50,184 |
| Megadiverse Countries | 0 | - | 4.96 | 134,517 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,750 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,066 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,615 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,941 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,412 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,522 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,354 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,801 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,120 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,569 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,668 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,631 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,836 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,184 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,446 |
| World Map Quiz | 0 | - | 4.81 | 64,011 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,193 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,667 |
| Countries by Road Signs | 0 | - | 4.98 | 53,377 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,005 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,630 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,363 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,614 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,228 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,427 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,598 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,131 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,617 |
| Widest Countries East to West | 0 | - | 4.92 | 129,119 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,320 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,612 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,901 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,932 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,952 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,328 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,035 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,663 |
| Countries with Double Letters | 0 | - | 4.96 | 93,940 |
| Countries that End in N | 0 | - | 4.94 | 161,547 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,364 |
| Countries with Six Letters | 0 | - | 4.93 | 210,960 |
| Countries with W | 0 | - | 4.97 | 158,638 |
| Countries with Z | 0 | - | 4.98 | 288,561 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,925 |
| Countries That End in U | 0 | - | 4.95 | 119,784 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,070 |
| Countries that End in O | 0 | - | 4.92 | 158,778 |
| Countries that End in R | 0 | - | 4.87 | 118,456 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,989 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,640 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,683 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,764 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,333 |
| Countries That End in Y | 0 | - | 4.90 | 185,363 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,773 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,030 |
| Countries that End in I | 0 | - | 4.94 | 134,627 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,639 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,380 |
| Countries That End in NIA | 0 | - | 4.92 | 109,259 |
| Countries That End in BIA | 0 | - | 4.93 | 148,497 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,377 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,730 |
| Countries That End in RIA | 0 | - | 4.93 | 126,298 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,286 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,994 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,809 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,160 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,729 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,111 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,393 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,907 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,795 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,969 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,469 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,144 |
| Countries that End in L | 0 | - | 4.94 | 156,240 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,729 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,047 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,699 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,538 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,599 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,249 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,769 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,243 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,785 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,202 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,021 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,858 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,282 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,503 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,489 |
