| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,307 |
| Countries in World War I | 0 | - | 4.88 | 226,508 |
| Countries in World War II | 0 | - | 4.53 | 903,899 |
| Battle to Country | 0 | - | 4.91 | 52,471 |
| Important Cities in WWII | 0 | - | 4.42 | 92,848 |
| Independence from Whom | 0 | - | 4.99 | 209,557 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,642 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,964 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,639 |
| Countries by Founding Story | 0 | - | 4.95 | 76,477 |
| Communist Countries in History | 0 | - | 4.63 | 492,258 |
| Recently Independent Countries | 0 | - | 4.98 | 157,915 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,383 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,005 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,687 |
| Countries by Former Name | 0 | - | 4.99 | 124,204 |
| Historical City to Country | 0 | - | 4.84 | 78,103 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,270 |
| WWII First Names | 0 | - | 4.44 | 41,544 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,112 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,217 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,202 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,553 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,517 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,750 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,148 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,878,647 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,795 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,342 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,250 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,852 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,239 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,648 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,529 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,330 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,929 |
| Orthodox Countries | 0 | - | 4.91 | 130,304 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,400 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,344 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,967 |
| Monarchies of Europe | 0 | - | 4.90 | 97,255 |
| Monarchies of Asia | 0 | - | 4.97 | 70,560 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,405 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,529 |
| Cities Bombed During WWII | 0 | - | 4.08 | 29,889 |
| Landlocked Countries | 0 | - | 4.99 | 413,150 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,705 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,155 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,328 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,188 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,032 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 8,219,217 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,712,419 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,193 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,067 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,470 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,340 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,956 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,306 |
| Island Countries | 0 | - | 4.99 | 707,388 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,382 |
| Himalayan Countries | 0 | - | 4.95 | 135,157 |
| Andean Countries | 0 | - | 4.94 | 82,730 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,146 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,080 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,819 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,513 |
| Danube Countries | 0 | - | 4.97 | 71,031 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,693 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,486 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,362 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,281 |
| European Landlocked Countries | 0 | - | 4.99 | 145,701 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,109 |
| Countries with the Most Species | 0 | - | 4.99 | 95,215 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,260 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,188 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,351 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,928 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,540 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,897 |
| Countries in the Alps | 0 | - | 4.87 | 116,743 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,512 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,156 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,970 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,364 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,098 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,958 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,510 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,712 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,877 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,008 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,179 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,013 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,397 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,702 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,709 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,962 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,594 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,218 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,720 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,997 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,475 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,565 |
| Largest Countries By Category | 0 | - | 4.97 | 156,675 |
| Countries by Countries | 0 | - | 4.96 | 62,211 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,890 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,231 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,296 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,947 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,311 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,639 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,707 |
| Random Countries on the World Map | 0 | - | 5.00 | 1,534,878 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,803 |
| Northernmost Countries | 0 | - | 4.99 | 357,441 |
| Countries of South America | 0 | - | 5.00 | 913,924 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,294 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,445 |
| "Land" Countries | 0 | - | 4.98 | 333,507 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,059 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,145 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,090 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,626 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,066 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,170 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,134 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,395 |
| Countries by Independence Day | 0 | - | 4.56 | 52,591 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,124 |
| Former Countries by Capital | 0 | - | 4.45 | 126,998 |
| Former Countries | 0 | - | 4.75 | 132,631 |
| Hindu Countries | 0 | - | 4.85 | 49,490 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,461 |
| Countries in an Egg of the World Map | 0 | - | 4.91 | 63,762 |
| Political Movements by Country | 0 | - | 4.46 | 72,241 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,689 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,414 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,798,910 |
| One Border Countries | 0 | - | 4.98 | 463,903 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,678 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,585,332 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,643 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,956 |
| Countries with Megacities | 0 | - | 4.99 | 246,409 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,872 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,775 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,326 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,730 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,203 |
| Countries by Official Language | 0 | - | 4.95 | 192,662 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,981 |
| Countries in their Native Language | 0 | - | 4.99 | 196,527 |
| Subdivisions by Country | 0 | - | 4.86 | 50,043 |
| National Founders | 0 | - | 4.40 | 83,632 |
| Megadiverse Countries | 0 | - | 4.97 | 133,852 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,087,025 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,705 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,899 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,573 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,396 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,846 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,583 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,097 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,196 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,728 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,456 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,385 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,458 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,474 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,637 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,997 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,419 |
| World Map Quiz | 0 | - | 4.81 | 63,420 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,390 |
| Countries in Random Rings of the World Map | 0 | - | 4.99 | 85,484 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,268 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,657 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,728 |
| Random Sequential Countries on the World Map | 0 | - | 5.00 | 517,905 |
| Countries in Random Squares of the World Map | 0 | - | 4.99 | 334,007 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,226 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,921 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,884 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,590 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,807 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,007 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,213 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,906 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,288 |
| Widest Countries East to West | 0 | - | 4.92 | 128,554 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,201 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,143 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,538 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,650 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,559 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,979 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,041 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,314 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,557 |
