| Countries in World War I | 0 | - | 4.88 | 228,124 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,006 |
| Battle to Country | 0 | - | 4.91 | 53,328 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,470 |
| Countries in World War II | 0 | - | 4.54 | 912,607 |
| Independence from Whom | 0 | - | 4.99 | 211,680 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,954 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,470 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,193 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,359 |
| Countries by Founding Story | 0 | - | 4.95 | 77,205 |
| Communist Countries in History | 0 | - | 4.63 | 495,681 |
| Recently Independent Countries | 0 | - | 4.98 | 159,214 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,874 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,197 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,801 |
| Countries by Former Name | 0 | - | 4.99 | 125,111 |
| Historical City to Country | 0 | - | 4.84 | 78,530 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,375 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,242 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,604 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,264 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,189 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,733 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,245 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,533 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,233 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,447,080 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,423 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,164 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,503 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,188 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,182 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,732 |
| World Map with Random Merged Countries | 0 | - | 4.99 | 1,718,975 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,735 |
| Important Cities in WWII | 0 | - | 4.42 | 93,464 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,871 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,396 |
| Orthodox Countries | 0 | - | 4.92 | 131,919 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,580 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,854 |
| Monarchies of Europe | 0 | - | 4.90 | 98,139 |
| Monarchies of Asia | 0 | - | 4.97 | 71,083 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,883 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,712 |
| Landlocked Countries | 0 | - | 4.99 | 420,328 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,611 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,972 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,385 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,587 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 134,364 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,166 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,544 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,588 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,109 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,992 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,961 |
| WWII First Names | 0 | - | 4.44 | 41,782 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,163 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,002 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,149 |
| Island Countries | 0 | - | 4.99 | 710,323 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,275 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,661 |
| One Border Countries - Shape Quiz | 0 | - | 4.84 | 64,870 |
| Merged Country Shapes Quiz #1 | 0 | - | 4.93 | 59,357 |
| Merged Country Shapes Quiz #2 | 0 | - | 4.92 | 60,187 |
| Merged Country Shapes Quiz #3 | 0 | - | 4.86 | 41,994 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,686 |
| Northernmost Countries | 0 | - | 4.99 | 361,164 |
| Political Movements by Country | 0 | - | 4.46 | 72,526 |
| Countries of South America | 0 | - | 5.00 | 924,896 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,761 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,434 |
| "Land" Countries | 0 | - | 4.98 | 336,157 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,960 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,265 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,710 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,264 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,808 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,784 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,484 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,283 |
| Countries by Independence Day | 0 | - | 4.61 | 52,736 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,394 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,635 |
| Himalayan Countries | 0 | - | 4.95 | 138,036 |
| Andean Countries | 0 | - | 4.95 | 84,233 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,457 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,275 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,097 |
| Former Countries by Capital | 0 | - | 4.45 | 127,472 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,536 |
| Danube Countries | 0 | - | 4.97 | 71,812 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,756 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,202 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,937 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,381 |
| European Landlocked Countries | 0 | - | 4.99 | 146,947 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,345 |
| Countries with the Most Species | 0 | - | 4.99 | 103,074 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,508 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,493 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,651 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,432 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,112 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,496 |
| Countries in the Alps | 0 | - | 4.87 | 117,941 |
| Former Countries | 0 | - | 4.75 | 133,783 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,077 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,667 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,539 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,434 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,283 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,826 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,454 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,324 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,065 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,694 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,559 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,415 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,056 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,337 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,350 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,491 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,163 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,674 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,787 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,089 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,626 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,093 |
| Hindu Countries | 0 | - | 4.86 | 50,141 |
| Largest Countries By Category | 0 | - | 4.97 | 157,900 |
| Countries by Countries | 0 | - | 4.97 | 62,997 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,441 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,212 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,504 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,760 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,493 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,764 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,412 |
| One Border Countries | 0 | - | 4.98 | 468,540 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,622,400 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,609 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,433 |
| Countries with Megacities | 0 | - | 4.99 | 263,253 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,265 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,227 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,569 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,264 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,218 |
| Countries by Official Language | 0 | - | 4.95 | 194,909 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,917 |
| Countries in their Native Language | 0 | - | 4.99 | 198,436 |
| Subdivisions by Country | 0 | - | 4.86 | 50,354 |
| National Founders | 0 | - | 4.40 | 83,837 |
| Megadiverse Countries | 0 | - | 4.96 | 134,869 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,101,382 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,768 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,252 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,768 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,840 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,057 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,895 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,928 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,556 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,033 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,321 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,786 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,086 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,859 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,249 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,408 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,616 |
| Countries Bordering "U" Countries | 0 | - | 4.82 | 24,508 |
| World Map Quiz | 0 | - | 4.81 | 64,842 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,345 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,178 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,225 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,680 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,761 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,079 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,817 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,739 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,697 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,834 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,960 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,345 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,421 |
| Widest Countries East to West | 0 | - | 4.92 | 129,490 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,149 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,055 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,632 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,399 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,693 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,306 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,418 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,759 |
