| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,215 |
| Countries in World War I | 0 | - | 4.88 | 226,002 |
| Countries in World War II | 0 | - | 4.53 | 903,266 |
| Battle to Country | 0 | - | 4.91 | 52,420 |
| Important Cities in WWII | 0 | - | 4.42 | 92,805 |
| Independence from Whom | 0 | - | 4.99 | 209,434 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,577 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,937 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,582 |
| Countries by Founding Story | 0 | - | 4.95 | 76,440 |
| Communist Countries in History | 0 | - | 4.63 | 492,054 |
| Cities Bombed During WWII | 0 | - | 4.08 | 29,874 |
| Recently Independent Countries | 0 | - | 4.98 | 157,853 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,054 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,289 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 192,852 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,553 |
| Countries by Former Name | 0 | - | 4.99 | 124,136 |
| Historical City to Country | 0 | - | 4.84 | 78,080 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,231 |
| WWII First Names | 0 | - | 4.45 | 41,527 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,025 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,131 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,174 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,493 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,476 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,706 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,080 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,846,347 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,743 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,231 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,237 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,786 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,151 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,588 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,452 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,864 |
| Orthodox Countries | 0 | - | 4.91 | 130,239 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,332 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,904 |
| Monarchies of Europe | 0 | - | 4.90 | 97,193 |
| Monarchies of Asia | 0 | - | 4.97 | 70,529 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,375 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,456 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,633 |
| Landlocked Countries | 0 | - | 4.99 | 412,828 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,657 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,068 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,281 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,142 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 90,992 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,709,230 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,158 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,011 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,443 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,964 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,807 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 400,955 |
| Island Countries | 0 | - | 4.99 | 707,206 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,212 |
| Himalayan Countries | 0 | - | 4.95 | 135,032 |
| Andean Countries | 0 | - | 4.94 | 82,650 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,074 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 122,971 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,746 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,453 |
| Danube Countries | 0 | - | 4.97 | 70,988 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,631 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,450 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,273 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,183 |
| European Landlocked Countries | 0 | - | 4.99 | 145,659 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,036 |
| Countries with the Most Species | 0 | - | 4.99 | 95,180 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,179 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,172 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,331 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,905 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,500 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,861 |
| Countries in the Alps | 0 | - | 4.87 | 116,675 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,459 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,052 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,935 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,316 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,059 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,932 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,456 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,675 |
| Largest Country by Body of Water | 0 | - | 4.95 | 55,116 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,963 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,164 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,994 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,356 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,667 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,667 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,848 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,554 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,196 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,658 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,800 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,341 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,529 |
| Largest Countries By Category | 0 | - | 4.97 | 156,597 |
| Countries by Countries | 0 | - | 4.96 | 62,157 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,359,879 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,195 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,199 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,929 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,304 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,648 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,252 |
| Northernmost Countries | 0 | - | 4.99 | 357,199 |
| Countries of South America | 0 | - | 5.00 | 913,253 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,435 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,844,839 |
| "Land" Countries | 0 | - | 4.98 | 333,401 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,036 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,122 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,029 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,601 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,035 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,109 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,376 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 376,974 |
| Countries by Independence Day | 0 | - | 4.56 | 52,582 |
| Former Countries by Capital | 0 | - | 4.45 | 126,956 |
| Former Countries | 0 | - | 4.75 | 132,582 |
| Hindu Countries | 0 | - | 4.85 | 49,439 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,390 |
| Political Movements by Country | 0 | - | 4.46 | 72,220 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,619 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,348 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,797,112 |
| One Border Countries | 0 | - | 4.98 | 463,527 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,594 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,583,131 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,849 |
| Countries with Megacities | 0 | - | 4.99 | 246,130 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,761 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,726 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,228 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,661 |
| Majority Muslim Countries | 0 | - | 4.98 | 367,959 |
| Countries by Official Language | 0 | - | 4.95 | 192,575 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,844 |
| Countries in their Native Language | 0 | - | 4.99 | 196,454 |
| Subdivisions by Country | 0 | - | 4.86 | 50,030 |
| National Founders | 0 | - | 4.40 | 83,612 |
| Megadiverse Countries | 0 | - | 4.97 | 133,827 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,087 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,636 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,874 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,412 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,369 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,830 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,528 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,058 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,173 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,710 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,362 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,358 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,423 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,437 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,600 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,975 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,317 |
| World Map Quiz | 0 | - | 4.81 | 63,349 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,179 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,205 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,619 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,666 |
| Countries by Road Signs | 0 | - | 4.98 | 52,962 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,140 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,871 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,841 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,484 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,755 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,956 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,164 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,871 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,248 |
| Widest Countries East to West | 0 | - | 4.92 | 128,512 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,191 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,070 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,516 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,617 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,513 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,941 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,029 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,117 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,551 |
| Countries of Africa | 0 | - | 5.00 | 2,503,967 |
| Countries with Double Letters | 0 | - | 4.97 | 93,203 |
| Countries that End in N | 0 | - | 4.94 | 156,272 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,461 |
| Countries with Six Letters | 0 | - | 4.93 | 210,163 |
| Countries with W | 0 | - | 4.97 | 158,085 |
| Countries with Z | 0 | - | 4.98 | 287,272 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,422 |
