| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,157 |
| Countries in World War I | 0 | - | 4.88 | 227,340 |
| Battle to Country | 0 | - | 4.91 | 52,865 |
| Important Cities in WWII | 0 | - | 4.42 | 93,162 |
| Independence from Whom | 0 | - | 4.99 | 210,434 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,251 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,184 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,501 |
| Countries by Founding Story | 0 | - | 4.95 | 76,826 |
| Communist Countries in History | 0 | - | 4.63 | 493,705 |
| Recently Independent Countries | 0 | - | 4.98 | 158,320 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,067 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,007 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,705 |
| Countries by Former Name | 0 | - | 4.99 | 124,630 |
| Historical City to Country | 0 | - | 4.84 | 78,297 |
| Cities Bombed During WWII | 0 | - | 4.08 | 30,026 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,129,056 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,796 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,563 |
| WWII First Names | 0 | - | 4.44 | 41,670 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,721 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,631 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,502 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,865 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,739 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,992 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,498 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,059 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,178 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,353 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,409 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,209 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,141 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,869 |
| Landlocked Countries | 0 | - | 4.99 | 416,213 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,563 |
| Orthodox Countries | 0 | - | 4.92 | 130,841 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,441 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,382 |
| Monarchies of Europe | 0 | - | 4.90 | 97,654 |
| Monarchies of Asia | 0 | - | 4.97 | 70,799 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,601 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,575 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,027 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,738 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,377 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,980 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,717 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 118,908 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,409 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,567 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,442 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,663 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,491 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,632 |
| Countries by Independence Day | 0 | - | 4.61 | 52,666 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,440 |
| Island Countries | 0 | - | 4.99 | 708,666 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,717 |
| Himalayan Countries | 0 | - | 4.95 | 136,321 |
| Andean Countries | 0 | - | 4.95 | 83,383 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,645 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,875 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,342 |
| Former Countries by Capital | 0 | - | 4.45 | 127,224 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,947 |
| Danube Countries | 0 | - | 4.97 | 71,350 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,145 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,811 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,068 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,016 |
| European Landlocked Countries | 0 | - | 4.99 | 146,075 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,691 |
| Countries with the Most Species | 0 | - | 4.99 | 99,574 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,839 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,310 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,485 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,126 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,779 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,150 |
| Countries in the Alps | 0 | - | 4.86 | 117,277 |
| Former Countries | 0 | - | 4.75 | 132,934 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,862 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,794 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,224 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,687 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,722 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,216 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,935 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,965 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,763 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,296 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,336 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,187 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,685 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,959 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,968 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,627 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,864 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,399 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,149 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,750 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,461 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,789 |
| Largest Countries By Category | 0 | - | 4.97 | 157,199 |
| Countries by Countries | 0 | - | 4.96 | 62,554 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,372 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,420 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,815 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,066 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,401 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,044 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,827 |
| Northernmost Countries | 0 | - | 4.99 | 359,141 |
| Political Movements by Country | 0 | - | 4.46 | 72,368 |
| Countries of South America | 0 | - | 5.00 | 919,076 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,911 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,233 |
| "Land" Countries | 0 | - | 4.98 | 334,315 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,520 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,478 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,703 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,934 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,374 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,686 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,290 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,676 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,159 |
| Countries with Megacities | 0 | - | 4.99 | 248,699 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,023 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,478 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,391 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,429 |
| Countries by Official Language | 0 | - | 4.95 | 193,874 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,346 |
| Countries in their Native Language | 0 | - | 4.99 | 197,514 |
| Subdivisions by Country | 0 | - | 4.86 | 50,176 |
| Megadiverse Countries | 0 | - | 4.96 | 134,510 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,709 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,060 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,610 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,939 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,371 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,514 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,347 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,797 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,101 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,560 |
| Hindu Countries | 0 | - | 4.86 | 49,798 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,659 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,628 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,832 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,181 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,407 |
| World Map Quiz | 0 | - | 4.81 | 63,985 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,141 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,660 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,125 |
| Countries by Road Signs | 0 | - | 4.98 | 53,364 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,982 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,619 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,341 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,587 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,221 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,410 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,589 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,125 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,608 |
| Widest Countries East to West | 0 | - | 4.92 | 129,105 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,318 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,597 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,880 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,925 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,941 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,318 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,012 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,659 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,199 |
| Countries with Double Letters | 0 | - | 4.96 | 93,841 |
| Countries that End in N | 0 | - | 4.94 | 157,277 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,243 |
| Countries with Six Letters | 0 | - | 4.93 | 210,866 |
| Countries with W | 0 | - | 4.97 | 158,531 |
| Countries with Z | 0 | - | 4.98 | 288,429 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,869 |
| Countries That End in U | 0 | - | 4.95 | 119,671 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,034 |
| Countries that End in O | 0 | - | 4.92 | 158,711 |
| Countries that End in R | 0 | - | 4.87 | 118,422 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,977 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,598 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,651 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,738 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,306 |
| Countries That End in Y | 0 | - | 4.90 | 185,331 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,753 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,011 |
| Countries that End in I | 0 | - | 4.94 | 134,605 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,614 |
