| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,267 |
| Countries in World War I | 0 | - | 4.88 | 229,288 |
| Battle to Country | 0 | - | 4.91 | 54,032 |
| Important Cities in WWII | 0 | - | 4.42 | 93,979 |
| Independence from Whom | 0 | - | 4.99 | 213,231 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,560 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,891 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,184 |
| Countries by Founding Story | 0 | - | 4.95 | 77,859 |
| Communist Countries in History | 0 | - | 4.63 | 498,473 |
| Recently Independent Countries | 0 | - | 4.98 | 160,420 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,063 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,910 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,294 |
| Countries by Former Name | 0 | - | 4.99 | 125,898 |
| Historical City to Country | 0 | - | 4.85 | 79,062 |
| Cities Bombed During WWII | 0 | - | 4.09 | 30,336 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,922,064 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,481 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.78 | 78,341 |
| WWII First Names | 0 | - | 4.45 | 41,984 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,511 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,948 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,567 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,236 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,543 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,888 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,808 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,125 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,803 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,706 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,229 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,594 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,651 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,297 |
| Landlocked Countries | 0 | - | 4.99 | 426,590 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,508 |
| Orthodox Countries | 0 | - | 4.92 | 132,869 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,795 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,540 |
| Monarchies of Europe | 0 | - | 4.90 | 98,940 |
| Monarchies of Asia | 0 | - | 4.97 | 71,547 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,317 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,807,995 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,610 |
| World Leaders of the World Wars | 0 | - | 4.36 | 38,057 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,003 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,842 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,405 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,513 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,889 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,973 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,865 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,782 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,983 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,862 |
| Countries by Independence Day | 0 | - | 4.62 | 52,866 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,015 |
| Island Countries | 0 | - | 4.99 | 712,765 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,567 |
| Himalayan Countries | 0 | - | 4.93 | 140,507 |
| Andean Countries | 0 | - | 4.94 | 85,629 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,764 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,232 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,322 |
| Former Countries by Capital | 0 | - | 4.45 | 127,851 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,556 |
| Danube Countries | 0 | - | 4.97 | 72,473 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,687 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,903 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,272 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,741 |
| European Landlocked Countries | 0 | - | 4.99 | 147,674 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,405 |
| Countries with the Most Species | 0 | - | 4.99 | 103,607 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,515 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,791 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,914 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,881 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,621 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,076 |
| Countries in the Alps | 0 | - | 4.87 | 118,859 |
| Former Countries | 0 | - | 4.77 | 134,271 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,799 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,002 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,012 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,094 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,042 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,326 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,474 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,926 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,467 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,241 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,916 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,786 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,617 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,852 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,953 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,001 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,661 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,630 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,756 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,966 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,314 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,555 |
| Largest Countries By Category | 0 | - | 4.97 | 158,955 |
| Countries by Countries | 0 | - | 4.97 | 63,714 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,340 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,064 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,337 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,427 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,689 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,155 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,406 |
| Northernmost Countries | 0 | - | 4.99 | 364,299 |
| Political Movements by Country | 0 | - | 4.46 | 72,792 |
| Countries of South America | 0 | - | 5.00 | 933,449 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,432 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,057 |
| "Land" Countries | 0 | - | 4.98 | 338,565 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,477 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,077 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,323 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,761 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,356 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,865 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,028 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,717 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,329 |
| Countries with Megacities | 0 | - | 4.99 | 267,482 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,990 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,234 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,320 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,335 |
| Countries by Official Language | 0 | - | 4.95 | 196,122 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,785 |
| Countries in their Native Language | 0 | - | 4.99 | 199,845 |
| Subdivisions by Country | 0 | - | 4.87 | 50,642 |
| Megadiverse Countries | 0 | - | 4.96 | 145,338 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,036 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,556 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,751 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,238 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,352 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,594 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,122 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,275 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,643 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,434 |
| Hindu Countries | 0 | - | 4.86 | 50,612 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,465 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,178 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,603 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,916 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,537 |
| World Map Quiz | 0 | - | 4.81 | 65,826 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,565 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,758 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,863 |
| Countries by Road Signs | 0 | - | 4.98 | 54,394 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,383 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,159 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,623 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,739 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,486 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,606 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,790 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,729 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,852 |
| Widest Countries East to West | 0 | - | 4.92 | 130,778 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,616 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,311 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,536 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,100 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,042 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,536 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,517 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,909 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,915 |
| Countries with Double Letters | 0 | - | 4.96 | 97,241 |
| Countries that End in N | 0 | - | 4.95 | 172,335 |
| Countries with Five Letters | 0 | - | 4.96 | 284,214 |
| Countries with Six Letters | 0 | - | 4.94 | 214,652 |
| Countries with W | 0 | - | 4.96 | 161,064 |
| Countries with Z | 0 | - | 4.98 | 292,635 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,408 |
| Countries That End in U | 0 | - | 4.95 | 121,257 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,211 |
| Countries that End in O | 0 | - | 4.92 | 160,272 |
| Countries that End in R | 0 | - | 4.87 | 119,218 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,981 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,970 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 172,670 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,898 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,879 |
| Countries That End in Y | 0 | - | 4.91 | 186,116 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,586 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,332 |
| Countries that End in I | 0 | - | 4.94 | 135,364 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,727 |
