| Landlocked Countries | 0 | - | 4.99 | 415,992 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,112,699 |
| Himalayan Countries | 0 | - | 4.95 | 136,217 |
| Andean Countries | 0 | - | 4.95 | 83,307 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,596 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,808 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,298 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,920 |
| Danube Countries | 0 | - | 4.97 | 71,332 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,104 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,783 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,011 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,965 |
| European Landlocked Countries | 0 | - | 4.99 | 146,043 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,652 |
| Countries with the Most Species | 0 | - | 4.99 | 96,851 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,793 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,295 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,471 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,110 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,759 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,128 |
| Countries in the Alps | 0 | - | 4.86 | 117,247 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,835 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,742 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,209 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,660 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,521 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,202 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,897 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,947 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,748 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,278 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,322 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,180 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,673 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,934 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,942 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,606 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,849 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,384 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,128 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,654 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,408 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,779 |
| Largest Countries By Category | 0 | - | 4.97 | 157,169 |
| Countries by Countries | 0 | - | 4.96 | 62,524 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,781 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,059 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,396 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,031 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,736,008 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,375 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,520 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,225 |
| Island Countries | 0 | - | 4.99 | 708,588 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,595 |
| Northernmost Countries | 0 | - | 4.99 | 359,052 |
| Countries of South America | 0 | - | 5.00 | 918,778 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,583 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,507 |
| "Land" Countries | 0 | - | 4.98 | 334,270 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,109 |
| Countries with Megacities | 0 | - | 4.99 | 248,613 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,982 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,457 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,356 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,411 |
| Countries by Official Language | 0 | - | 4.95 | 193,778 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,266 |
| Countries in their Native Language | 0 | - | 4.99 | 197,432 |
| Independence from Whom | 0 | - | 4.99 | 210,393 |
| Subdivisions by Country | 0 | - | 4.86 | 50,169 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,212 |
| Megadiverse Countries | 0 | - | 4.96 | 134,497 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,637 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,054 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,592 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,934 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,056 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,175 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,471 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,502 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,333 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,064 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,554 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,650 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,622 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,825 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,162 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,838 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,342 |
| World Map Quiz | 0 | - | 4.81 | 63,935 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,031 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,648 |
| Countries by Founding Story | 0 | - | 4.95 | 76,812 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,945 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,605 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,323 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,530 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,190 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,389 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,570 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,111 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,591 |
| Widest Countries East to West | 0 | - | 4.92 | 129,093 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,306 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,574 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,714 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,915 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,916 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,301 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,975 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,657 |
| Countries with Double Letters | 0 | - | 4.96 | 93,816 |
| Countries that End in N | 0 | - | 4.94 | 157,250 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,210 |
| Countries with Six Letters | 0 | - | 4.93 | 210,846 |
| Countries with W | 0 | - | 4.97 | 158,503 |
| Countries with Z | 0 | - | 4.98 | 288,398 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,854 |
| Countries That End in U | 0 | - | 4.95 | 119,664 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,997 |
| Countries that End in O | 0 | - | 4.92 | 158,695 |
| Countries that End in R | 0 | - | 4.87 | 118,413 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,966 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,563 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,631 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,718 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,284 |
| Countries That End in Y | 0 | - | 4.90 | 185,322 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,734 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,997 |
| Countries that End in I | 0 | - | 4.94 | 134,593 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,591 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,355 |
| Countries That End in NIA | 0 | - | 4.92 | 109,220 |
| Countries That End in BIA | 0 | - | 4.93 | 148,455 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,339 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,702 |
| Countries That End in RIA | 0 | - | 4.93 | 126,258 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,248 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,914 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,766 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,124 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,670 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,071 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,355 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,876 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,761 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,941 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,428 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,095 |
| Countries that End in L | 0 | - | 4.94 | 156,206 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,541 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,037 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,675 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,509 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,575 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,178 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,728 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,122 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,750 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,171 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,993 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,851 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,272 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,488 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,472 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,004 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,613 |
| One Border Countries | 0 | - | 4.98 | 466,105 |
| Top Producing Countries | 0 | - | 4.63 | 116,010 |
| ISO Country Codes | 0 | - | 4.45 | 82,248 |
| Countries on the Equator | 0 | - | 4.63 | 140,452 |
| Members of the Arab League | 0 | - | 4.77 | 75,517 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,657 |
| Separatist Movements | 0 | - | 4.44 | 45,726 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,782 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,688 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,047 |
| Westernmost Countries | 0 | - | 4.50 | 49,459 |
| Easternmost Countries | 0 | - | 4.75 | 62,727 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,533 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,111 |
| Indochina Countries | 0 | - | 4.74 | 66,014 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,553 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,866 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,907 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,001 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,257 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,509 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,673 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,791 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,116 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,487 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,352 |
| Flyover Countries | 0 | - | 4.68 | 50,643 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,552 |
