| Independence from Whom | 0 | - | 4.99 | 209,831 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,854 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,039 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,140 |
| Battle to Country | 0 | - | 4.91 | 52,582 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,962,594 |
| Recently Independent Countries | 0 | - | 4.98 | 158,055 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,620 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,340 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,372 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,419 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,307 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,149 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,054 |
| Countries by Former Name | 0 | - | 4.99 | 124,366 |
| Historical City to Country | 0 | - | 4.84 | 78,170 |
| Landlocked Countries | 0 | - | 4.99 | 414,138 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,143 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,211 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,230 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,156 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,352 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,390 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,349 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,687 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,632 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,882 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,302 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,898 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,571 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,291 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,997 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,801 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,721,288 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,796 |
| Himalayan Countries | 0 | - | 4.95 | 135,529 |
| Andean Countries | 0 | - | 4.94 | 82,927 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,295 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,324 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,993 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,669 |
| Countries in World War I | 0 | - | 4.88 | 226,711 |
| Danube Countries | 0 | - | 4.97 | 71,126 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,829 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,590 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,593 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,500 |
| European Landlocked Countries | 0 | - | 4.99 | 145,821 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,285 |
| Countries with the Most Species | 0 | - | 4.99 | 95,276 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,511 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,432 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,216 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,385 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,986 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,612 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,995 |
| Countries in the Alps | 0 | - | 4.86 | 116,914 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,627 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,353 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,055 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,468 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,239 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,048 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,638 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,808 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,494 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,111 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,211 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,074 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,490 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,800 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,789 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,181 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,698 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,286 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,844 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,569 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,853 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,631 |
| Largest Countries By Category | 0 | - | 4.97 | 156,853 |
| Countries by Countries | 0 | - | 4.96 | 62,312 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,980 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,823 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,674 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,321 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,128 |
| Island Countries | 0 | - | 4.99 | 707,815 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,179 |
| Northernmost Countries | 0 | - | 4.99 | 358,007 |
| Countries of South America | 0 | - | 5.00 | 915,728 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,739 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,263 |
| "Land" Countries | 0 | - | 4.98 | 333,782 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,667 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,749 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,137 |
| Orthodox Countries | 0 | - | 4.91 | 130,472 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,806 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,147 |
| Monarchies of Europe | 0 | - | 4.90 | 97,388 |
| Monarchies of Asia | 0 | - | 4.97 | 70,642 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,458 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,684 |
| Countries by Independence Day | 0 | - | 4.56 | 52,626 |
| Former Countries by Capital | 0 | - | 4.45 | 127,086 |
| Former Countries | 0 | - | 4.75 | 132,757 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,551 |
| Countries with Megacities | 0 | - | 4.99 | 247,430 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,386 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,162 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,814 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,069 |
| Countries by Official Language | 0 | - | 4.95 | 192,887 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,287 |
| Countries in their Native Language | 0 | - | 4.99 | 196,739 |
| Subdivisions by Country | 0 | - | 4.86 | 50,090 |
| Megadiverse Countries | 0 | - | 4.97 | 133,947 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,912 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,944 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,457 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,871 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,734 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,041 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,199 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,239 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,755 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,699 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,449 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,533 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,528 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,714 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,049 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,719 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,392 |
| Communist Countries in History | 0 | - | 4.63 | 492,790 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,469 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,208 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,999 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,915 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,919 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,112 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,323 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,977 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,372 |
| Widest Countries East to West | 0 | - | 4.92 | 128,654 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,222 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,294 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,594 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,727 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,679 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,104 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,064 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,600 |
| Countries with Double Letters | 0 | - | 4.96 | 93,476 |
| Countries that End in N | 0 | - | 4.94 | 156,969 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,781 |
| Countries with Six Letters | 0 | - | 4.93 | 210,450 |
| Countries with W | 0 | - | 4.97 | 158,290 |
| Countries with Z | 0 | - | 4.98 | 287,989 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,614 |
| Countries That End in U | 0 | - | 4.95 | 119,547 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,676 |
| Countries that End in O | 0 | - | 4.92 | 158,590 |
| Countries that End in R | 0 | - | 4.87 | 118,302 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,878 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,190 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,407 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,547 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,084 |
| Countries That End in Y | 0 | - | 4.90 | 185,230 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,461 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,761 |
| Countries that End in I | 0 | - | 4.94 | 134,462 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,291 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,236 |
| Countries That End in NIA | 0 | - | 4.92 | 109,051 |
| Countries That End in BIA | 0 | - | 4.92 | 147,760 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,135 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,538 |
| Countries That End in RIA | 0 | - | 4.93 | 126,122 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,062 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,289 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,558 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,937 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,423 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,957 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,174 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,700 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,563 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,838 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,874 |
| Countries that End in L | 0 | - | 4.94 | 155,790 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,543 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,998 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,552 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,346 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,464 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,467 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,314 |
