| Axis Occupied Countries of WWII | 0 | - | 4.99 | 206,337 |
| Countries in World War I | 0 | - | 4.89 | 208,097 |
| Battle to Country | 0 | - | 4.92 | 34,762 |
| Important Cities in WWII | 0 | - | 4.48 | 82,588 |
| Independence from Whom | 0 | - | 4.99 | 182,786 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 111,761 |
| Most Recently-Settled Countries | 0 | - | 4.91 | 48,580 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,501 |
| Communist Countries in History | 0 | - | 4.65 | 451,240 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,280 |
| Countries of the World in 1900 | 0 | - | 4.88 | 64,744 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 168,539 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 126,005 |
| Countries by Former Name | 0 | - | 4.98 | 92,454 |
| Historical City to Country | 0 | - | 4.82 | 71,834 |
| Cities Bombed During WWII | 0 | - | 4.09 | 26,853 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,421,162 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 220,835 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.76 | 57,156 |
| WWII First Names | 0 | - | 4.46 | 38,413 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,775 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,170 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,597 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,303 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,532 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,241 |
| Countries Settled by Vikings | 0 | - | 4.93 | 110,707 |
| Countries with the Most Christians | 0 | - | 4.93 | 105,978 |
| Warsaw Pact Countries | 0 | - | 4.85 | 79,778 |
| Least Christian Countries with Exceptions | 0 | - | 4.89 | 71,422 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 85,956 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,072 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 316,979 |
| Countries with the Most Catholics | 0 | - | 4.91 | 91,810 |
| Orthodox Countries | 0 | - | 4.91 | 115,964 |
| Countries that Have Won the Most Battles | 0 | - | 4.07 | 35,801 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 68,100 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,013,385 |
| Monarchies of Europe | 0 | - | 4.88 | 86,191 |
| Monarchies of Asia | 0 | - | 4.95 | 53,564 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 96,975 |
| World Leaders of the World Wars | 0 | - | 4.40 | 34,156 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 91,811 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 176,527 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 108,591 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 100,591 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 80,312 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 179,923 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 114,764 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 116,081 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,347 |
| Countries by Independence Day Quiz | 0 | - | 4.64 | 44,323 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 351,421 |
| Countries on the Equator | 0 | - | 4.82 | 132,181 |
| Members of the Arab League | 0 | - | 4.82 | 59,037 |
| Island Countries Quiz | 0 | - | 4.99 | 637,933 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,017 |
| Himalayan Countries | 0 | - | 4.95 | 102,321 |
| Andean Countries | 0 | - | 4.90 | 56,837 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,676 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,533 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,840 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,512 |
| Former Countries by Capital | 0 | - | 4.45 | 103,281 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,687 |
| Danube Countries | 0 | - | 4.97 | 56,337 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,369 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,580 |
| Countries with the Best Passports | 0 | - | 4.86 | 70,245 |
| Countries with the Worst Passports | 0 | - | 4.86 | 48,736 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,335 |
| European Landlocked Countries | 0 | - | 4.99 | 114,816 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,711 |
| Countries with the Most Species | 0 | - | 4.99 | 89,077 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,761 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,422 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,792 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,726 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,092 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,435 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,639 |
| Countries in the Alps | 0 | - | 4.82 | 101,748 |
| Former Countries | 0 | - | 4.71 | 123,486 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,564 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,687 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,094 |
| Guerrillas by Country | 0 | - | 4.45 | 38,254 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,665 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,309 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 86,821 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,001 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,723 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,050 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,105 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,874 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,318 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,388 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 94,914 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,457 |
| Countries with the Most Grassland | 0 | - | 4.93 | 68,925 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,481 |
| Countries with the Most Climate Zones | 0 | - | 4.97 | 60,920 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,917 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 192,446 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,222 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,921 |
| Largest Countries By Category | 0 | - | 4.96 | 143,808 |
| Countries by Countries | 0 | - | 4.95 | 54,018 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 66,745 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,256 |
| Biggest Countries by Area | 0 | - | 5.00 | 924,052 |
| Northernmost Countries | 0 | - | 4.99 | 325,184 |
| Political Movements by Country | 0 | - | 4.47 | 68,165 |
| Countries of South America | 0 | - | 5.00 | 782,890 |
| Countries of Oceania | 0 | - | 5.00 | 881,001 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,104,723 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,549,591 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.87 | 67,142 |
| Top 10 Richest Countries in Asia | 0 | - | 4.86 | 72,354 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 66,854 |
| Top 10 Richest Countries in Europe | 0 | - | 4.88 | 133,522 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 66,790 |
| Biggest Trading Partners - European Union | 0 | - | 4.90 | 64,094 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 156,780 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,301,320 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,395 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,019 |
| Countries with Megacities | 0 | - | 4.99 | 194,543 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,299 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,774 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,574 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,641 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,828 |
| Countries by Official Language | 0 | - | 4.95 | 153,378 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,481 |
| Countries in their Native Language | 0 | - | 4.98 | 176,889 |
| Subdivisions by Country | 0 | - | 4.82 | 46,162 |
| Megadiverse Countries | 0 | - | 4.96 | 124,686 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 89,828 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 105,963 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,107 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 129,994 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,264 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,465 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,955 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 42,763 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,771 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,317 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,461 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,882 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,705 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,032,702 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 79,900 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,690 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 87,438 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,219 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,043 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 106,995 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,408 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,516 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,822 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,393 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,253 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,801 |
| Widest Countries East to West | 0 | - | 4.93 | 118,657 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,668 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,809 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,076 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,728 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 117,594 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,461 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,238 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,842 |
| Countries with Double Letters | 0 | - | 4.96 | 66,511 |
| Countries that End in N | 0 | - | 4.94 | 130,874 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 227,395 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,261 |
| Countries with W | 0 | - | 4.97 | 121,181 |
| Countries with Z | 0 | - | 4.98 | 241,861 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,332 |
| Countries That End in U | 0 | - | 4.94 | 106,621 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,032 |
| Countries that End in O | 0 | - | 4.92 | 146,245 |
| Countries that End in R | 0 | - | 4.86 | 96,019 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,790 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,394 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,781 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,512 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,439 |
| Countries That End in Y | 0 | - | 4.90 | 160,745 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,530 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,733 |
| Countries that End in I | 0 | - | 4.92 | 114,118 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,314 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,759 |
| Countries That End in NIA | 0 | - | 4.93 | 100,278 |
| Countries That End in BIA | 0 | - | 4.91 | 125,267 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,302 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 108,978 |
| Countries That End in RIA | 0 | - | 4.89 | 100,424 |
