| Countries by Former Name | 0 | - | 4.99 | 124,345 |
| Independence from Whom | 0 | - | 4.99 | 209,797 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,831 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,031 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,113 |
| Countries by Founding Story | 0 | - | 4.95 | 76,583 |
| Cities by Former Name | 0 | - | 4.84 | 91,022 |
| Recently Independent Countries | 0 | - | 4.98 | 158,040 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,593 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,304 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,005 |
| Historical City to Country | 0 | - | 4.84 | 78,154 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,951,953 |
| Landlocked Countries | 0 | - | 4.99 | 413,967 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,720,135 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,324 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,369 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,336 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,674 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,615 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,867 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,284 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,745 |
| Himalayan Countries | 0 | - | 4.95 | 135,488 |
| Andean Countries | 0 | - | 4.94 | 82,887 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,270 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,289 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,965 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,650 |
| Danube Countries | 0 | - | 4.97 | 71,111 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,809 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,576 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,564 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,470 |
| European Landlocked Countries | 0 | - | 4.99 | 145,798 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,262 |
| Countries with the Most Species | 0 | - | 4.99 | 95,259 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,404 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,883 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,211 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,382 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,976 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,599 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,978 |
| Countries in the Alps | 0 | - | 4.86 | 116,889 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,605 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,331 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,040 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,458 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,220 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,040 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,618 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,785 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,438 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,102 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,206 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,060 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,481 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,787 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,781 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,151 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,683 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,276 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,824 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,503 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,802 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,623 |
| Largest Countries By Category | 0 | - | 4.97 | 156,834 |
| Countries by Countries | 0 | - | 4.96 | 62,296 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,457 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,287 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,977 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,603 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,343 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,786 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,906 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,811 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,152 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,808 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,537 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,250 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,072 |
| Island Countries | 0 | - | 4.99 | 707,765 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,999 |
| Northernmost Countries | 0 | - | 4.99 | 357,941 |
| Countries of South America | 0 | - | 5.00 | 915,444 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,423 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,781 |
| "Land" Countries | 0 | - | 4.98 | 333,748 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,652 |
| Countries by Independence Day | 0 | - | 4.56 | 52,624 |
| Former Countries by Capital | 0 | - | 4.45 | 127,074 |
| Former Countries | 0 | - | 4.75 | 132,745 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,359 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,115 |
| Battle to Country | 0 | - | 4.91 | 52,575 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,245 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,502 |
| Countries with Megacities | 0 | - | 4.99 | 247,340 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,331 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,123 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,754 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,042 |
| Countries by Official Language | 0 | - | 4.95 | 192,853 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,229 |
| Countries in their Native Language | 0 | - | 4.99 | 196,711 |
| Subdivisions by Country | 0 | - | 4.86 | 50,085 |
| Megadiverse Countries | 0 | - | 4.97 | 133,934 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,880 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,935 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,445 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,869 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,716 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,183 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,230 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,753 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,661 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,444 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,523 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,521 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,708 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,041 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,681 |
| World Map Quiz | 0 | - | 4.81 | 63,553 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,896 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,370 |
| Countries by Road Signs | 0 | - | 4.98 | 53,143 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,437 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,104 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,990 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,871 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,906 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,101 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,311 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,965 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,364 |
| Widest Countries East to West | 0 | - | 4.92 | 128,638 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,221 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,274 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,588 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,719 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,671 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,094 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,060 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,596 |
| Countries with Double Letters | 0 | - | 4.96 | 93,453 |
| Countries that End in N | 0 | - | 4.94 | 156,958 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,765 |
| Countries with Six Letters | 0 | - | 4.93 | 210,427 |
| Countries with W | 0 | - | 4.97 | 158,277 |
| Countries with Z | 0 | - | 4.98 | 287,963 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,600 |
| Countries That End in U | 0 | - | 4.95 | 119,541 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,651 |
| Countries that End in O | 0 | - | 4.92 | 158,581 |
| Countries that End in R | 0 | - | 4.87 | 118,297 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,872 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,159 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,385 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,533 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,074 |
| Countries That End in Y | 0 | - | 4.90 | 185,225 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,443 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,737 |
| Countries that End in I | 0 | - | 4.94 | 134,450 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,268 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,222 |
| Countries That End in NIA | 0 | - | 4.92 | 109,036 |
| Countries That End in BIA | 0 | - | 4.92 | 147,744 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,120 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,520 |
| Countries That End in RIA | 0 | - | 4.93 | 126,110 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,042 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,264 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,550 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,925 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,404 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,952 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,158 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,685 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,547 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,831 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,194 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,861 |
| Countries that End in L | 0 | - | 4.94 | 155,777 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,444 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,997 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,539 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,332 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,456 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,292 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,221 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 130,516 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,293 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,533 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,629 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,667 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,181 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,433 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,349 |
