| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,634 |
| Countries in World War I | 0 | - | 4.88 | 228,682 |
| Battle to Country | 0 | - | 4.91 | 53,683 |
| Important Cities in WWII | 0 | - | 4.42 | 93,703 |
| Independence from Whom | 0 | - | 4.99 | 212,423 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,977 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,671 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,658 |
| Countries by Founding Story | 0 | - | 4.95 | 77,488 |
| Communist Countries in History | 0 | - | 4.63 | 497,126 |
| Recently Independent Countries | 0 | - | 4.98 | 159,649 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,481 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,104 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,609 |
| Countries by Former Name | 0 | - | 4.99 | 125,501 |
| Historical City to Country | 0 | - | 4.85 | 78,729 |
| Cities Bombed During WWII | 0 | - | 4.09 | 30,241 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,691,788 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 237,918 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 78,148 |
| WWII First Names | 0 | - | 4.44 | 41,892 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,062 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,638 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,367 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,035 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,395 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,703 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,540 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,869 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,153 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,603 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,741 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,923 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,215 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,019 |
| Landlocked Countries | 0 | - | 4.99 | 423,328 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,015 |
| Orthodox Countries | 0 | - | 4.92 | 132,459 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,689 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,219 |
| Monarchies of Europe | 0 | - | 4.90 | 98,511 |
| Monarchies of Asia | 0 | - | 4.97 | 71,335 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,120 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,788,325 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,197 |
| World Leaders of the World Wars | 0 | - | 4.36 | 37,956 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,465 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,091 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,959 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,211 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,540 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,514 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,443 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,580 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,798 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,945 |
| Countries by Independence Day | 0 | - | 4.62 | 52,814 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,219 |
| Island Countries | 0 | - | 4.99 | 711,558 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,144 |
| Himalayan Countries | 0 | - | 4.94 | 139,328 |
| Andean Countries | 0 | - | 4.94 | 84,938 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,157 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,322 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,730 |
| Former Countries by Capital | 0 | - | 4.45 | 127,678 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,042 |
| Danube Countries | 0 | - | 4.97 | 72,161 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,239 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,569 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,603 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,108 |
| European Landlocked Countries | 0 | - | 4.99 | 147,319 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,890 |
| Countries with the Most Species | 0 | - | 4.99 | 103,374 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,026 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,660 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,776 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,641 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,401 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,806 |
| Countries in the Alps | 0 | - | 4.87 | 118,419 |
| Former Countries | 0 | - | 4.77 | 134,029 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,900 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,352 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,779 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,758 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,667 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,066 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,856 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,637 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,266 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,988 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,738 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,611 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,348 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,599 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,668 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,248 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,434 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,964 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,288 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,677 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,513 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,335 |
| Largest Countries By Category | 0 | - | 4.97 | 158,465 |
| Countries by Countries | 0 | - | 4.96 | 63,391 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,240 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,902 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,917 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,333 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,602 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,829 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,652 |
| Northernmost Countries | 0 | - | 4.99 | 362,666 |
| Political Movements by Country | 0 | - | 4.46 | 72,673 |
| Countries of South America | 0 | - | 5.00 | 929,288 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,324 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,881,670 |
| "Land" Countries | 0 | - | 4.98 | 337,727 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,752 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,582 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,209 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,519 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,055 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,449 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,434 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,506 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,326 |
| Countries with Megacities | 0 | - | 4.99 | 265,541 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,123 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,687 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,384 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,759 |
| Countries by Official Language | 0 | - | 4.95 | 195,531 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,779 |
| Countries in their Native Language | 0 | - | 4.99 | 199,318 |
| Subdivisions by Country | 0 | - | 4.87 | 50,504 |
| Megadiverse Countries | 0 | - | 4.96 | 135,120 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,341 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,433 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,313 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,148 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,317 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,439 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,725 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,194 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,979 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,978 |
| Hindu Countries | 0 | - | 4.87 | 50,397 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,293 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,032 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,453 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,573 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,655 |
| World Map Quiz | 0 | - | 4.81 | 65,293 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,981 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,490 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,294 |
| Countries by Road Signs | 0 | - | 4.98 | 54,155 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,376 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,459 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,160 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,701 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,056 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,169 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,427 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,515 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,683 |
| Widest Countries East to West | 0 | - | 4.92 | 129,787 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,487 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,925 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,404 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,867 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,749 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,006 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,426 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,828 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,523 |
| Countries with Double Letters | 0 | - | 4.96 | 96,559 |
| Countries that End in N | 0 | - | 4.95 | 171,461 |
| Countries with Five Letters | 0 | - | 4.96 | 283,024 |
| Countries with Six Letters | 0 | - | 4.94 | 213,898 |
| Countries with W | 0 | - | 4.96 | 160,564 |
| Countries with Z | 0 | - | 4.98 | 291,816 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,929 |
| Countries That End in U | 0 | - | 4.95 | 120,979 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,704 |
| Countries that End in O | 0 | - | 4.92 | 159,631 |
| Countries that End in R | 0 | - | 4.87 | 119,051 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,806 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,379 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,863 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,612 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,519 |
| Countries That End in Y | 0 | - | 4.91 | 185,962 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,116 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,019 |
| Countries that End in I | 0 | - | 4.94 | 135,190 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,292 |
