| Independence from Whom | 0 | - | 4.99 | 210,231 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,149 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,391 |
| Countries by Founding Story | 0 | - | 4.95 | 76,749 |
| Landlocked Countries | 0 | - | 4.99 | 415,632 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,081,189 |
| Recently Independent Countries | 0 | - | 4.98 | 158,244 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,936 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,807 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,526 |
| Countries by Former Name | 0 | - | 4.99 | 124,560 |
| Historical City to Country | 0 | - | 4.84 | 78,254 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,417 |
| Himalayan Countries | 0 | - | 4.95 | 136,070 |
| Andean Countries | 0 | - | 4.95 | 83,222 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,537 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,703 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,228 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,870 |
| Danube Countries | 0 | - | 4.97 | 71,286 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,041 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,740 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,923 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,867 |
| European Landlocked Countries | 0 | - | 4.99 | 145,997 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,577 |
| Countries with the Most Species | 0 | - | 4.99 | 95,360 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,704 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,278 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,448 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,083 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,735 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,103 |
| Countries in the Alps | 0 | - | 4.86 | 117,164 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,789 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,650 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,175 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,611 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,415 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,165 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,834 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,913 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,714 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,229 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,284 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,155 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,641 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,903 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,915 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,522 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,816 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,361 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,075 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,427 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,283 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,747 |
| Largest Countries By Category | 0 | - | 4.97 | 157,080 |
| Countries by Countries | 0 | - | 4.96 | 62,467 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,720 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,040 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,387 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,386 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,310 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,988 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,733,018 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,633 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,560 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,462 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,824 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,714 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,965 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,439 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,024 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,333 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,089 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,056 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,045 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,063 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,934 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,937 |
| Island Countries | 0 | - | 4.99 | 708,440 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,097 |
| Northernmost Countries | 0 | - | 4.99 | 358,851 |
| Countries of South America | 0 | - | 5.00 | 918,256 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,818 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,285 |
| "Land" Countries | 0 | - | 4.98 | 334,166 |
| Former Countries by Capital | 0 | - | 4.45 | 127,191 |
| Former Countries | 0 | - | 4.75 | 132,889 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,877 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,989 |
| Countries with Megacities | 0 | - | 4.99 | 248,377 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,880 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,398 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,271 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,334 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,818 |
| Countries by Official Language | 0 | - | 4.95 | 193,285 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,843 |
| Countries in their Native Language | 0 | - | 4.99 | 197,102 |
| Subdivisions by Country | 0 | - | 4.86 | 50,155 |
| Megadiverse Countries | 0 | - | 4.96 | 134,478 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,258 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,029 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,561 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,919 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,918 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,471 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,312 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,790 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,994 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,532 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,638 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,600 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,812 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,135 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,221 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,319 |
| Battle to Country | 0 | - | 4.91 | 52,724 |
| World Map Quiz | 0 | - | 4.81 | 63,865 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,848 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,621 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,395 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,380 |
| Countries by Road Signs | 0 | - | 4.98 | 53,301 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,842 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,559 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,283 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,428 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,147 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,349 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,536 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,093 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,560 |
| Widest Countries East to West | 0 | - | 4.92 | 129,050 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,295 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,527 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,662 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,886 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,870 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,260 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,843 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,649 |
| Countries with Double Letters | 0 | - | 4.96 | 93,745 |
| Countries that End in N | 0 | - | 4.94 | 157,181 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,112 |
| Countries with Six Letters | 0 | - | 4.93 | 210,769 |
| Countries with W | 0 | - | 4.97 | 158,459 |
| Countries with Z | 0 | - | 4.98 | 288,313 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,807 |
| Countries That End in U | 0 | - | 4.95 | 119,629 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,928 |
| Countries that End in O | 0 | - | 4.92 | 158,676 |
| Countries that End in R | 0 | - | 4.87 | 118,393 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,947 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,478 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,590 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,689 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,242 |
| Countries That End in Y | 0 | - | 4.90 | 185,303 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,662 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,949 |
| Countries that End in I | 0 | - | 4.94 | 134,565 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,535 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,329 |
| Countries That End in NIA | 0 | - | 4.92 | 109,153 |
| Countries That End in BIA | 0 | - | 4.92 | 147,908 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,295 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,666 |
| Countries That End in RIA | 0 | - | 4.93 | 126,218 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,208 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,814 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,720 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,065 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,631 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,050 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,313 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,827 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,727 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,918 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,385 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,039 |
| Countries that End in L | 0 | - | 4.94 | 156,178 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,323 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,028 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,651 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,485 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,549 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,083 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,685 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,945 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,704 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,106 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,961 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,837 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,255 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,472 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,443 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,382 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,484 |
