| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,080 |
| Countries in World War I | 0 | - | 4.88 | 228,203 |
| Battle to Country | 0 | - | 4.91 | 53,367 |
| Important Cities in WWII | 0 | - | 4.42 | 93,493 |
| Independence from Whom | 0 | - | 4.99 | 211,770 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,038 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,497 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,254 |
| Countries by Founding Story | 0 | - | 4.95 | 77,243 |
| Communist Countries in History | 0 | - | 4.63 | 495,863 |
| Recently Independent Countries | 0 | - | 4.98 | 159,277 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,969 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,326 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,921 |
| Countries by Former Name | 0 | - | 4.99 | 125,155 |
| Historical City to Country | 0 | - | 4.84 | 78,553 |
| Cities Bombed During WWII | 0 | - | 4.08 | 30,166 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,479,994 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,463 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,946 |
| WWII First Names | 0 | - | 4.44 | 41,794 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,664 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,317 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,208 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,771 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,266 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,557 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,277 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,642 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,272 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,515 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,277 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,288 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,796 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,772 |
| Landlocked Countries | 0 | - | 4.99 | 420,786 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,490 |
| Orthodox Countries | 0 | - | 4.92 | 132,004 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,597 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,910 |
| Monarchies of Europe | 0 | - | 4.90 | 98,181 |
| Monarchies of Asia | 0 | - | 4.97 | 71,107 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,907 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,769,301 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,792 |
| World Leaders of the World Wars | 0 | - | 4.36 | 37,858 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,037 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,469 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,631 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 134,671 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,212 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,157 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,052 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,998 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,496 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,123 |
| Countries by Independence Day | 0 | - | 4.61 | 52,744 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,414 |
| Island Countries | 0 | - | 4.99 | 710,531 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,855 |
| Himalayan Countries | 0 | - | 4.95 | 138,190 |
| Andean Countries | 0 | - | 4.95 | 84,315 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,540 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,422 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,168 |
| Former Countries by Capital | 0 | - | 4.45 | 127,495 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,597 |
| Danube Countries | 0 | - | 4.97 | 71,860 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,833 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,264 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,027 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,485 |
| European Landlocked Countries | 0 | - | 4.99 | 147,001 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,410 |
| Countries with the Most Species | 0 | - | 4.99 | 103,123 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,567 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,521 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,669 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,457 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,132 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,525 |
| Countries in the Alps | 0 | - | 4.87 | 117,992 |
| Former Countries | 0 | - | 4.75 | 133,819 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,873 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,777 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,557 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,471 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,341 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,847 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,494 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,364 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,093 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,720 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,573 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,428 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,090 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,365 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,387 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,597 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,189 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,712 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,851 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,316 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,741 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,127 |
| Largest Countries By Category | 0 | - | 4.97 | 157,973 |
| Countries by Countries | 0 | - | 4.96 | 63,048 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,416 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,682 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,493 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,227 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,522 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,537 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,219 |
| Northernmost Countries | 0 | - | 4.99 | 361,356 |
| Political Movements by Country | 0 | - | 4.46 | 72,542 |
| Countries of South America | 0 | - | 5.00 | 925,398 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,440 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,687 |
| "Land" Countries | 0 | - | 4.98 | 336,806 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,068 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,298 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,774 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,302 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,833 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,827 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,130 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,437 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,553 |
| Countries with Megacities | 0 | - | 4.99 | 263,628 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,389 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,295 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,666 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,332 |
| Countries by Official Language | 0 | - | 4.95 | 194,990 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,016 |
| Countries in their Native Language | 0 | - | 4.99 | 198,496 |
| Subdivisions by Country | 0 | - | 4.86 | 50,376 |
| Megadiverse Countries | 0 | - | 4.96 | 134,903 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,836 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,275 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,857 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,065 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,947 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,952 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,578 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,047 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,397 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,802 |
| Hindu Countries | 0 | - | 4.86 | 50,177 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,113 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,886 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,261 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,426 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,777 |
| World Map Quiz | 0 | - | 4.81 | 64,905 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,539 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,215 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,820 |
| Countries by Road Signs | 0 | - | 4.98 | 53,855 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,831 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,121 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,850 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,843 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,755 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,888 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,192 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,367 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,463 |
| Widest Countries East to West | 0 | - | 4.92 | 129,529 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,420 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,210 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,073 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,653 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,437 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,724 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,322 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,771 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,822 |
| Countries with Double Letters | 0 | - | 4.97 | 95,749 |
| Countries that End in N | 0 | - | 4.95 | 170,712 |
| Countries with Five Letters | 0 | - | 4.96 | 281,763 |
| Countries with Six Letters | 0 | - | 4.94 | 213,128 |
| Countries with W | 0 | - | 4.97 | 160,010 |
| Countries with Z | 0 | - | 4.98 | 290,969 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,358 |
| Countries That End in U | 0 | - | 4.95 | 120,658 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,158 |
| Countries that End in O | 0 | - | 4.92 | 159,381 |
| Countries that End in R | 0 | - | 4.87 | 118,862 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,628 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,754 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,418 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,290 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,906 |
| Countries That End in Y | 0 | - | 4.91 | 185,781 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,607 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,669 |
| Countries that End in I | 0 | - | 4.94 | 134,993 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,795 |
