| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,072 |
| Countries in World War I | 0 | - | 4.88 | 227,266 |
| Battle to Country | 0 | - | 4.91 | 52,823 |
| Important Cities in WWII | 0 | - | 4.42 | 93,141 |
| Independence from Whom | 0 | - | 4.99 | 210,384 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,209 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,174 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,465 |
| Countries by Founding Story | 0 | - | 4.95 | 76,809 |
| Communist Countries in History | 0 | - | 4.63 | 493,636 |
| Recently Independent Countries | 0 | - | 4.98 | 158,296 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,012 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,943 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,631 |
| Countries by Former Name | 0 | - | 4.99 | 124,604 |
| Historical City to Country | 0 | - | 4.84 | 78,282 |
| Cities Bombed During WWII | 0 | - | 4.08 | 30,017 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,109,613 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,758 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,537 |
| WWII First Names | 0 | - | 4.44 | 41,662 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,693 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,609 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,486 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,851 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,733 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,980 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,474 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,045 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,128 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,344 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,363 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,163 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,114 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,850 |
| Landlocked Countries | 0 | - | 4.99 | 415,955 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,509 |
| Orthodox Countries | 0 | - | 4.92 | 130,795 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,436 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,357 |
| Monarchies of Europe | 0 | - | 4.90 | 97,624 |
| Monarchies of Asia | 0 | - | 4.97 | 70,781 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,580 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,735,674 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,991 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,730 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,344 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,924 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,691 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 118,592 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,376 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,540 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,414 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,652 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,350 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,504 |
| Countries by Independence Day | 0 | - | 4.61 | 52,660 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,182 |
| Island Countries | 0 | - | 4.99 | 708,575 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,577 |
| Himalayan Countries | 0 | - | 4.95 | 136,204 |
| Andean Countries | 0 | - | 4.95 | 83,295 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,588 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,796 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,285 |
| Former Countries by Capital | 0 | - | 4.45 | 127,211 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,908 |
| Danube Countries | 0 | - | 4.97 | 71,327 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,098 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,782 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,999 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,958 |
| European Landlocked Countries | 0 | - | 4.99 | 146,035 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,648 |
| Countries with the Most Species | 0 | - | 4.99 | 96,141 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,785 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,293 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,470 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,108 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,754 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,128 |
| Countries in the Alps | 0 | - | 4.86 | 117,240 |
| Former Countries | 0 | - | 4.75 | 132,917 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,828 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,734 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,204 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,655 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,486 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,197 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,893 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,946 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,741 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,274 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,317 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,176 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,669 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,931 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,940 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,590 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,842 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,378 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,117 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,629 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,401 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,777 |
| Largest Countries By Category | 0 | - | 4.97 | 157,161 |
| Countries by Countries | 0 | - | 4.96 | 62,520 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,745 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,410 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,774 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,059 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,395 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,028 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,543 |
| Northernmost Countries | 0 | - | 4.99 | 359,031 |
| Political Movements by Country | 0 | - | 4.46 | 72,361 |
| Countries of South America | 0 | - | 5.00 | 918,728 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,534 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,400 |
| "Land" Countries | 0 | - | 4.98 | 334,267 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,331 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,448 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,656 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,906 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,350 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,652 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,954 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,599 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,097 |
| Countries with Megacities | 0 | - | 4.99 | 248,593 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,974 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,453 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,345 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,405 |
| Countries by Official Language | 0 | - | 4.95 | 193,765 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,257 |
| Countries in their Native Language | 0 | - | 4.99 | 197,418 |
| Subdivisions by Country | 0 | - | 4.86 | 50,169 |
| Megadiverse Countries | 0 | - | 4.96 | 134,496 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,630 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,052 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,587 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,931 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,010 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,502 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,328 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,061 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,553 |
| Hindu Countries | 0 | - | 4.86 | 49,784 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,649 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,621 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,825 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,161 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,329 |
| World Map Quiz | 0 | - | 4.81 | 63,930 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,014 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,646 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,093 |
| Countries by Road Signs | 0 | - | 4.98 | 53,336 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,933 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,601 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,317 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,519 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,185 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,383 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,566 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,108 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,588 |
| Widest Countries East to West | 0 | - | 4.92 | 129,089 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,305 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,568 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,693 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,915 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,913 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,296 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,963 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,656 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,171 |
| Countries with Double Letters | 0 | - | 4.96 | 93,815 |
| Countries that End in N | 0 | - | 4.94 | 157,245 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,199 |
| Countries with Six Letters | 0 | - | 4.93 | 210,839 |
| Countries with W | 0 | - | 4.97 | 158,502 |
| Countries with Z | 0 | - | 4.98 | 288,394 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,853 |
| Countries That End in U | 0 | - | 4.95 | 119,663 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,994 |
| Countries that End in O | 0 | - | 4.92 | 158,693 |
| Countries that End in R | 0 | - | 4.87 | 118,411 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,966 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,554 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,624 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,716 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,278 |
| Countries That End in Y | 0 | - | 4.90 | 185,319 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,728 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,996 |
| Countries that End in I | 0 | - | 4.94 | 134,593 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,587 |
