| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,728 |
| Countries in World War I | 0 | - | 4.88 | 228,755 |
| Battle to Country | 0 | - | 4.91 | 53,725 |
| Important Cities in WWII | 0 | - | 4.42 | 93,735 |
| Independence from Whom | 0 | - | 4.99 | 212,539 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,062 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,696 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,729 |
| Countries by Founding Story | 0 | - | 4.95 | 77,525 |
| Communist Countries in History | 0 | - | 4.63 | 497,320 |
| Recently Independent Countries | 0 | - | 4.98 | 159,701 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,557 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,222 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,718 |
| Countries by Former Name | 0 | - | 4.99 | 125,555 |
| Historical City to Country | 0 | - | 4.85 | 78,756 |
| Cities Bombed During WWII | 0 | - | 4.09 | 30,249 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,725,668 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,976 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 78,178 |
| WWII First Names | 0 | - | 4.44 | 41,915 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,117 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,698 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,395 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,064 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,417 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,730 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,583 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,910 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,241 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,616 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,797 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,010 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,310 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,065 |
| Landlocked Countries | 0 | - | 4.99 | 423,754 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,095 |
| Orthodox Countries | 0 | - | 4.92 | 132,523 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,710 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,285 |
| Monarchies of Europe | 0 | - | 4.90 | 98,577 |
| Monarchies of Asia | 0 | - | 4.97 | 71,365 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,152 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,791,537 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,262 |
| World Leaders of the World Wars | 0 | - | 4.36 | 37,973 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,528 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,173 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,013 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,398 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,584 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,564 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,510 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,612 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,161 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,078 |
| Countries by Independence Day | 0 | - | 4.62 | 52,827 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,484 |
| Island Countries | 0 | - | 4.99 | 711,732 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,315 |
| Himalayan Countries | 0 | - | 4.94 | 139,491 |
| Andean Countries | 0 | - | 4.94 | 85,037 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,235 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,427 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,791 |
| Former Countries by Capital | 0 | - | 4.45 | 127,706 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,102 |
| Danube Countries | 0 | - | 4.97 | 72,205 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,293 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,617 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,699 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,197 |
| European Landlocked Countries | 0 | - | 4.99 | 147,364 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,967 |
| Countries with the Most Species | 0 | - | 4.99 | 103,411 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,103 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,679 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,790 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,681 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,432 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,844 |
| Countries in the Alps | 0 | - | 4.87 | 118,477 |
| Former Countries | 0 | - | 4.77 | 134,065 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,047 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,429 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,806 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,805 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,732 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,094 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,909 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,664 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,290 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,014 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,759 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,625 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,383 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,633 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,717 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,358 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,472 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,194 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,347 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,874 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,641 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,374 |
| Largest Countries By Category | 0 | - | 4.97 | 158,532 |
| Countries by Countries | 0 | - | 4.96 | 63,433 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,284 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,930 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,997 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,345 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,618 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,896 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,321 |
| Northernmost Countries | 0 | - | 4.99 | 363,010 |
| Political Movements by Country | 0 | - | 4.46 | 72,695 |
| Countries of South America | 0 | - | 5.00 | 929,883 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,113 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,016 |
| "Land" Countries | 0 | - | 4.98 | 337,856 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,838 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,627 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,267 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,547 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,094 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,524 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,104 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,684 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,424 |
| Countries with Megacities | 0 | - | 4.99 | 265,816 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,217 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,748 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,481 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,833 |
| Countries by Official Language | 0 | - | 4.95 | 195,623 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,996 |
| Countries in their Native Language | 0 | - | 4.99 | 199,392 |
| Subdivisions by Country | 0 | - | 4.87 | 50,524 |
| Megadiverse Countries | 0 | - | 4.96 | 135,153 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,429 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,454 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,338 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,160 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,368 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,467 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,744 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,206 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,081 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,149 |
| Hindu Countries | 0 | - | 4.87 | 50,430 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,322 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,056 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,470 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,596 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,792 |
| World Map Quiz | 0 | - | 4.81 | 65,373 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,231 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,526 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,379 |
| Countries by Road Signs | 0 | - | 4.98 | 54,195 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,628 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,653 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,312 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,933 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,181 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,301 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,517 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,577 |
| Tallest Countries North to South | 0 | - | 4.85 | 128,461 |
| Widest Countries East to West | 0 | - | 4.92 | 130,157 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,524 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,009 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,438 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,800 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,073 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,446 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,850 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,614 |
| Countries with Double Letters | 0 | - | 4.96 | 96,656 |
| Countries that End in N | 0 | - | 4.95 | 171,548 |
| Countries with Five Letters | 0 | - | 4.96 | 283,176 |
| Countries with Six Letters | 0 | - | 4.94 | 214,001 |
| Countries with W | 0 | - | 4.96 | 160,627 |
| Countries with Z | 0 | - | 4.98 | 291,939 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,994 |
| Countries That End in U | 0 | - | 4.95 | 121,012 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,781 |
| Countries that End in O | 0 | - | 4.92 | 159,666 |
| Countries that End in R | 0 | - | 4.87 | 119,066 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,829 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,456 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,930 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,646 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,567 |
| Countries That End in Y | 0 | - | 4.91 | 185,993 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,184 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,068 |
| Countries that End in I | 0 | - | 4.94 | 135,211 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,364 |
