| Landlocked Countries | 0 | - | 4.99 | 414,604 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,001,207 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,002 |
| Himalayan Countries | 0 | - | 4.95 | 135,710 |
| Andean Countries | 0 | - | 4.94 | 83,030 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,378 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,441 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,079 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,737 |
| Danube Countries | 0 | - | 4.97 | 71,184 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,903 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,640 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,708 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,609 |
| European Landlocked Countries | 0 | - | 4.99 | 145,880 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,368 |
| Countries with the Most Species | 0 | - | 4.99 | 95,299 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,536 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,239 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,406 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,020 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,655 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,023 |
| Countries in the Alps | 0 | - | 4.86 | 116,986 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,683 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,461 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,108 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,513 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,298 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,095 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,702 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,843 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,598 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,153 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,232 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,102 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,539 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,829 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,831 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,296 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,738 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,312 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,942 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,859 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,002 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,683 |
| Largest Countries By Category | 0 | - | 4.97 | 156,911 |
| Countries by Countries | 0 | - | 4.96 | 62,366 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,551 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,001 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,358 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,860 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,724,979 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,197 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,492 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,349 |
| Island Countries | 0 | - | 4.99 | 708,014 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,809 |
| Northernmost Countries | 0 | - | 4.99 | 358,274 |
| Countries of South America | 0 | - | 5.00 | 916,623 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,639 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,849 |
| "Land" Countries | 0 | - | 4.98 | 333,916 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,702 |
| Countries with Megacities | 0 | - | 4.99 | 247,757 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,556 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,239 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,957 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,184 |
| Countries by Official Language | 0 | - | 4.95 | 192,981 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,434 |
| Countries in their Native Language | 0 | - | 4.99 | 196,840 |
| Independence from Whom | 0 | - | 4.99 | 209,953 |
| Subdivisions by Country | 0 | - | 4.86 | 50,115 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,933 |
| Megadiverse Countries | 0 | - | 4.97 | 133,982 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,009 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,967 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,482 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,886 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,787 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,070 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,216 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,231 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,264 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,767 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,767 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,466 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,568 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,556 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,748 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,077 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,122 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,892 |
| World Map Quiz | 0 | - | 4.81 | 63,685 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,251 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,439 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,607 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,381 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,121 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,097 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,023 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,213 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,416 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,019 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,457 |
| Widest Countries East to West | 0 | - | 4.92 | 128,955 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,261 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,366 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,616 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,783 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,725 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,154 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 74,219 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,625 |
| Countries with Double Letters | 0 | - | 4.96 | 93,580 |
| Countries that End in N | 0 | - | 4.94 | 157,060 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,899 |
| Countries with Six Letters | 0 | - | 4.93 | 210,562 |
| Countries with W | 0 | - | 4.97 | 158,354 |
| Countries with Z | 0 | - | 4.98 | 288,090 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,678 |
| Countries That End in U | 0 | - | 4.95 | 119,588 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,781 |
| Countries that End in O | 0 | - | 4.92 | 158,617 |
| Countries that End in R | 0 | - | 4.87 | 118,337 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,907 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,299 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,470 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,591 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,134 |
| Countries That End in Y | 0 | - | 4.90 | 185,258 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,525 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,821 |
| Countries that End in I | 0 | - | 4.94 | 134,499 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,361 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,258 |
| Countries That End in NIA | 0 | - | 4.92 | 109,077 |
| Countries That End in BIA | 0 | - | 4.92 | 147,800 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,183 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,585 |
| Countries That End in RIA | 0 | - | 4.93 | 126,154 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,114 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,555 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,618 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,981 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,476 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,980 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,214 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,737 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,618 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,857 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,251 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,922 |
| Countries that End in L | 0 | - | 4.94 | 156,110 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,766 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,010 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,581 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,385 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,484 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,737 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,502 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 140,735 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,549 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,919 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,850 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,775 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,221 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,447 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,386 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,787 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,061 |
| One Border Countries | 0 | - | 4.98 | 465,075 |
| Top Producing Countries | 0 | - | 4.63 | 115,954 |
| ISO Country Codes | 0 | - | 4.45 | 82,159 |
| Countries on the Equator | 0 | - | 4.63 | 140,368 |
| Members of the Arab League | 0 | - | 4.77 | 75,491 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,602 |
| Separatist Movements | 0 | - | 4.44 | 45,667 |
| Countries with the Best Passports | 0 | - | 4.73 | 84,673 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,652 |
| Next Country Alphabetically | 0 | - | 4.70 | 85,599 |
| Westernmost Countries | 0 | - | 4.50 | 49,440 |
| Easternmost Countries | 0 | - | 4.75 | 62,698 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,491 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 107,961 |
| Indochina Countries | 0 | - | 4.74 | 65,966 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,534 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 95,807 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,889 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 56,969 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,221 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,450 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,626 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,741 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,036 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,436 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,293 |
| Flyover Countries | 0 | - | 4.67 | 50,590 |
| Top 50 Countries by Area - In Order | 0 | - | 4.70 | 73,466 |
