| Landlocked Countries | 0 | - | 4.99 | 422,877 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,652,724 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,961 |
| Himalayan Countries | 0 | - | 4.95 | 139,128 |
| Andean Countries | 0 | - | 4.93 | 84,850 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,070 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,183 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,653 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,965 |
| Danube Countries | 0 | - | 4.97 | 72,123 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,165 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,523 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,503 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,009 |
| European Landlocked Countries | 0 | - | 4.99 | 147,262 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,811 |
| Countries with the Most Species | 0 | - | 4.99 | 103,332 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,937 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,644 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,761 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,609 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,350 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,770 |
| Countries in the Alps | 0 | - | 4.87 | 118,341 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,681 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,246 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,738 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,695 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,616 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,029 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,789 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,589 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,238 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,943 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,706 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,584 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,315 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,554 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,623 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,119 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,388 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,653 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,229 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,419 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,392 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,301 |
| Largest Countries By Category | 0 | - | 4.97 | 158,371 |
| Countries by Countries | 0 | - | 4.96 | 63,340 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,814 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,319 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,589 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,773 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,784,958 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,393 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,788 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,880 |
| Island Countries | 0 | - | 4.99 | 711,363 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,994 |
| Northernmost Countries | 0 | - | 4.99 | 362,403 |
| Countries of South America | 0 | - | 5.00 | 928,618 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,455 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,073 |
| "Land" Countries | 0 | - | 4.98 | 337,592 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,154 |
| Countries with Megacities | 0 | - | 4.99 | 265,207 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,978 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,617 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,238 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,690 |
| Countries by Official Language | 0 | - | 4.95 | 195,442 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,635 |
| Countries in their Native Language | 0 | - | 4.99 | 199,214 |
| Independence from Whom | 0 | - | 4.99 | 212,304 |
| Subdivisions by Country | 0 | - | 4.87 | 50,475 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,885 |
| Megadiverse Countries | 0 | - | 4.96 | 135,083 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,240 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,402 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,282 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,138 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,251 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,651 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,588 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,409 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,702 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,178 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,877 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,939 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,258 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,010 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,410 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,540 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,876 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,487 |
| World Map Quiz | 0 | - | 4.81 | 65,227 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,736 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,438 |
| Countries by Founding Story | 0 | - | 4.95 | 77,445 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,275 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,381 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,094 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,499 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,991 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,098 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,379 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,490 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,638 |
| Widest Countries East to West | 0 | - | 4.92 | 129,735 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,476 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,495 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,211 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,826 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,678 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,956 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,406 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,817 |
| Countries with Double Letters | 0 | - | 4.96 | 96,439 |
| Countries that End in N | 0 | - | 4.95 | 171,318 |
| Countries with Five Letters | 0 | - | 4.96 | 282,847 |
| Countries with Six Letters | 0 | - | 4.94 | 213,771 |
| Countries with W | 0 | - | 4.96 | 160,472 |
| Countries with Z | 0 | - | 4.98 | 291,680 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,838 |
| Countries That End in U | 0 | - | 4.95 | 120,924 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,604 |
| Countries that End in O | 0 | - | 4.92 | 159,578 |
| Countries that End in R | 0 | - | 4.87 | 119,015 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,770 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,283 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,789 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,562 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,471 |
| Countries That End in Y | 0 | - | 4.91 | 185,932 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,039 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,959 |
| Countries that End in I | 0 | - | 4.94 | 135,157 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,224 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,870 |
| Countries That End in NIA | 0 | - | 4.92 | 109,846 |
| Countries That End in BIA | 0 | - | 4.93 | 149,290 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,201 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,505 |
| Countries That End in RIA | 0 | - | 4.93 | 126,872 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,092 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,846 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,823 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,258 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,805 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,632 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,095 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,465 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,610 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,479 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,394 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,082 |
| Countries that End in L | 0 | - | 4.94 | 156,907 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,191 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,286 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,083 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,010 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,054 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,917 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,782 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,213 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,925 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,587 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,950 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,133 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,732 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,945 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,646 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,326 |
| One Border Countries | 0 | - | 4.98 | 470,374 |
| Top Producing Countries | 0 | - | 4.63 | 116,291 |
| ISO Country Codes | 0 | - | 4.49 | 91,434 |
| Countries on the Equator | 0 | - | 4.63 | 141,048 |
| Members of the Arab League | 0 | - | 4.77 | 75,659 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,961 |
| Separatist Movements | 0 | - | 4.45 | 45,937 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,347 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,852 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,317 |
| Westernmost Countries | 0 | - | 4.43 | 62,474 |
| Easternmost Countries | 0 | - | 4.75 | 62,999 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,698 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,752 |
| Indochina Countries | 0 | - | 4.74 | 66,252 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,653 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,400 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,993 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,127 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,433 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,753 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 73,809 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,992 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,518 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,757 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,652 |
| Flyover Countries | 0 | - | 4.69 | 50,888 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 74,070 |
