| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,244 |
| Countries in World War I | 0 | - | 4.88 | 227,393 |
| Countries in World War II | 0 | - | 4.54 | 908,289 |
| Battle to Country | 0 | - | 4.91 | 52,896 |
| Important Cities in WWII | 0 | - | 4.42 | 93,188 |
| Independence from Whom | 0 | - | 4.99 | 210,776 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,306 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,208 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,565 |
| Countries by Founding Story | 0 | - | 4.95 | 76,862 |
| Communist Countries in History | 0 | - | 4.63 | 493,860 |
| Cities Bombed During WWII | 0 | - | 4.08 | 30,037 |
| Recently Independent Countries | 0 | - | 4.98 | 158,364 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,844 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,126 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,093 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,804 |
| Countries by Former Name | 0 | - | 4.99 | 124,651 |
| Historical City to Country | 0 | - | 4.84 | 78,318 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,588 |
| WWII First Names | 0 | - | 4.44 | 41,675 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,774 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,655 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,523 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,880 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,756 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,010 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,528 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,155,187 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,086 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,266 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,363 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,488 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,283 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,168 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,897 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,622 |
| Orthodox Countries | 0 | - | 4.92 | 130,912 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,452 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,406 |
| Monarchies of Europe | 0 | - | 4.90 | 97,689 |
| Monarchies of Asia | 0 | - | 4.97 | 70,824 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,621 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,079 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,747 |
| Landlocked Countries | 0 | - | 4.99 | 416,556 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,415 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,053 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,757 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,358 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,451 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,739,884 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,623 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,475 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,678 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,714 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,792 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,698 |
| Island Countries | 0 | - | 4.99 | 708,773 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,882 |
| Himalayan Countries | 0 | - | 4.95 | 136,461 |
| Andean Countries | 0 | - | 4.95 | 83,466 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,726 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,965 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,403 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,007 |
| Danube Countries | 0 | - | 4.97 | 71,386 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,197 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,841 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,133 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,095 |
| European Landlocked Countries | 0 | - | 4.99 | 146,120 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,750 |
| Countries with the Most Species | 0 | - | 4.99 | 101,330 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,884 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,326 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,503 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,152 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,800 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,177 |
| Countries in the Alps | 0 | - | 4.86 | 117,308 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,889 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,868 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,247 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,735 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,810 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,248 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,973 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,990 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,792 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,323 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,356 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,200 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,716 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,986 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,999 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,688 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,887 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,427 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,227 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,947 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,546 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,818 |
| Largest Countries By Category | 0 | - | 4.97 | 157,238 |
| Countries by Countries | 0 | - | 4.96 | 62,585 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,193 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,438 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,862 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,077 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,075 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,221 |
| Northernmost Countries | 0 | - | 4.99 | 359,315 |
| Countries of South America | 0 | - | 5.00 | 919,526 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,479 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,252 |
| "Land" Countries | 0 | - | 4.98 | 334,566 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,823 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,512 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,770 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,960 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,406 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,762 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,751 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,801 |
| Countries by Independence Day | 0 | - | 4.61 | 52,671 |
| Former Countries by Capital | 0 | - | 4.45 | 127,240 |
| Former Countries | 0 | - | 4.75 | 132,961 |
| Hindu Countries | 0 | - | 4.86 | 49,813 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,168 |
| Political Movements by Country | 0 | - | 4.46 | 72,385 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,242 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,859 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,813,151 |
| One Border Countries | 0 | - | 4.98 | 466,358 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,940 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,603,606 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,246 |
| Countries with Megacities | 0 | - | 4.99 | 248,881 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,101 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,530 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,457 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,481 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,766 |
| Countries by Official Language | 0 | - | 4.95 | 193,979 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,488 |
| Countries in their Native Language | 0 | - | 4.99 | 197,607 |
| Subdivisions by Country | 0 | - | 4.86 | 50,192 |
| National Founders | 0 | - | 4.40 | 83,733 |
| Megadiverse Countries | 0 | - | 4.96 | 134,528 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,162 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,802 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,073 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,014 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,622 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,946 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,426 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,540 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,366 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,804 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,145 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,578 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,681 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,636 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,850 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,196 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,526 |
| World Map Quiz | 0 | - | 4.81 | 64,062 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,322 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,681 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,923 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,215 |
| Countries by Road Signs | 0 | - | 4.98 | 53,402 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,041 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,653 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,384 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,675 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,256 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,451 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,612 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,140 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,634 |
| Widest Countries East to West | 0 | - | 4.92 | 129,131 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,326 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,632 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,906 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,946 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,965 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,347 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,079 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,020 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,669 |
| Countries of Africa | 0 | - | 5.00 | 2,520,988 |
| Countries with Double Letters | 0 | - | 4.96 | 94,084 |
| Countries that End in N | 0 | - | 4.95 | 164,929 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,518 |
| Countries with Six Letters | 0 | - | 4.93 | 211,079 |
| Countries with W | 0 | - | 4.97 | 158,767 |
| Countries with Z | 0 | - | 4.98 | 288,697 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,999 |
