| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,213 |
| Countries in World War I | 0 | - | 4.88 | 225,995 |
| Countries in World War II | 0 | - | 4.53 | 903,253 |
| Battle to Country | 0 | - | 4.91 | 52,420 |
| Important Cities in WWII | 0 | - | 4.42 | 92,804 |
| Independence from Whom | 0 | - | 4.99 | 209,433 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,576 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,937 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,577 |
| Countries by Founding Story | 0 | - | 4.95 | 76,440 |
| Communist Countries in History | 0 | - | 4.63 | 492,051 |
| Cities Bombed During WWII | 0 | - | 4.08 | 29,874 |
| Recently Independent Countries | 0 | - | 4.98 | 157,852 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,051 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,288 |
| 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 | 148,552 |
| Countries by Former Name | 0 | - | 4.99 | 124,135 |
| Historical City to Country | 0 | - | 4.84 | 78,079 |
| 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 | 134,130 |
| 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 | 66,475 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,705 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,079 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,845,523 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,742 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,230 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,237 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,785 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,151 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,587 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,451 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,860 |
| Orthodox Countries | 0 | - | 4.91 | 130,238 |
| 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 | 97,191 |
| Monarchies of Asia | 0 | - | 4.97 | 70,527 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,374 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,454 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,633 |
| Landlocked Countries | 0 | - | 4.99 | 412,825 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,652 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,066 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,279 |
| 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 | 3,709,189 |
| 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 | 122,441 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,959 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,802 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 400,945 |
| Island Countries | 0 | - | 4.99 | 707,205 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,206 |
| Himalayan Countries | 0 | - | 4.95 | 135,032 |
| Andean Countries | 0 | - | 4.94 | 82,648 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,074 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 122,969 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,745 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,453 |
| Danube Countries | 0 | - | 4.97 | 70,986 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,630 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,450 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,269 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,182 |
| European Landlocked Countries | 0 | - | 4.99 | 145,658 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,034 |
| Countries with the Most Species | 0 | - | 4.99 | 95,179 |
| 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 | 58,904 |
| 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 | 116,674 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,459 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,050 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,935 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,315 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,058 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,932 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,454 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,675 |
| Largest Country by Body of Water | 0 | - | 4.95 | 55,076 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,963 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,163 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,992 |
| 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 | 116,846 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,554 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,195 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,656 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,793 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,338 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,527 |
| Largest Countries By Category | 0 | - | 4.97 | 156,595 |
| Countries by Countries | 0 | - | 4.96 | 62,155 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,359,850 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,194 |
| 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 | 1,038,246 |
| Northernmost Countries | 0 | - | 4.99 | 357,197 |
| Countries of South America | 0 | - | 5.00 | 913,245 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,423 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,844,819 |
| "Land" Countries | 0 | - | 4.98 | 333,398 |
| 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 | 148,028 |
| 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 | 189,096 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,360 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 376,962 |
| Countries by Independence Day | 0 | - | 4.56 | 52,582 |
| Former Countries by Capital | 0 | - | 4.45 | 126,956 |
| Former Countries | 0 | - | 4.75 | 132,581 |
| 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 | 72,219 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 52,617 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,347 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,797,086 |
| One Border Countries | 0 | - | 4.98 | 463,524 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,592 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,583,060 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,849 |
| Countries with Megacities | 0 | - | 4.99 | 246,120 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,760 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,726 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,226 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,659 |
| Majority Muslim Countries | 0 | - | 4.98 | 367,955 |
| Countries by Official Language | 0 | - | 4.95 | 192,575 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,842 |
| Countries in their Native Language | 0 | - | 4.99 | 196,446 |
| 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 | 2,086,063 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,635 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,873 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,409 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,367 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,830 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,527 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,058 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,170 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,710 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,361 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,358 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,422 |
| 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 | 108,315 |
| World Map Quiz | 0 | - | 4.81 | 63,346 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,178 |
| 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 | 52,960 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,140 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,869 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,841 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,482 |
| 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 | 60,870 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,247 |
| 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 | 147,512 |
| 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 | 385,114 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,551 |
| Countries of Africa | 0 | - | 5.00 | 2,503,941 |
| Countries with Double Letters | 0 | - | 4.97 | 93,202 |
| Countries that End in N | 0 | - | 4.94 | 156,267 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,460 |
| Countries with Six Letters | 0 | - | 4.93 | 210,160 |
| Countries with W | 0 | - | 4.97 | 158,084 |
| Countries with Z | 0 | - | 4.98 | 287,257 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,420 |
