| Countries of the World Quiz | 0 | - | 5.00 | 46,887,710 |
| Landlocked Countries | 0 | - | 4.99 | 413,242 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,713,206 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,413 |
| Himalayan Countries | 0 | - | 4.95 | 135,201 |
| Andean Countries | 0 | - | 4.94 | 82,750 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,162 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,103 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,829 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,535 |
| Danube Countries | 0 | - | 4.97 | 71,041 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,704 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,497 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,385 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,309 |
| European Landlocked Countries | 0 | - | 4.99 | 145,711 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,131 |
| Countries with the Most Species | 0 | - | 4.99 | 95,222 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,283 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,190 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,354 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,936 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,547 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,913 |
| Countries in the Alps | 0 | - | 4.87 | 116,761 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,521 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,172 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,980 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,383 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,108 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,965 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,520 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,723 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,017 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,015 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,180 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,018 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,408 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,707 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,718 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,983 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,603 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,233 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,730 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,054 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,514 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,571 |
| Largest Countries By Category | 0 | - | 4.97 | 156,686 |
| Countries by Countries | 0 | - | 4.96 | 62,219 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,318 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,950 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,313 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,721 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,430 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,994 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,506 |
| Island Countries | 0 | - | 4.99 | 707,454 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,966 |
| Northernmost Countries | 0 | - | 4.99 | 357,510 |
| Countries of South America | 0 | - | 5.00 | 914,070 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,557 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,885 |
| "Land" Countries | 0 | - | 4.98 | 333,536 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,247 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,980 |
| Countries with Megacities | 0 | - | 4.99 | 246,486 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,897 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,787 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,360 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,745 |
| Countries by Official Language | 0 | - | 4.95 | 192,692 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,009 |
| Countries in their Native Language | 0 | - | 4.99 | 196,549 |
| Independence from Whom | 0 | - | 4.99 | 209,587 |
| Subdivisions by Country | 0 | - | 4.86 | 50,046 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,670 |
| Megadiverse Countries | 0 | - | 4.97 | 133,860 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,725 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,900 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,403 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,596 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,968 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,812 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,114 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,200 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,731 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,488 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,393 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,468 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,483 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,643 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,001 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,459 |
| World Map Quiz | 0 | - | 4.81 | 63,438 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,462 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,280 |
| Countries by Founding Story | 0 | - | 4.95 | 76,487 |
| Countries by Road Signs | 0 | - | 4.98 | 53,060 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,259 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,933 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,899 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,621 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,819 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,024 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,230 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,915 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,299 |
| Widest Countries East to West | 0 | - | 4.92 | 128,564 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,209 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,156 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,543 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,662 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,583 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,998 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,045 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,558 |
| Countries with Double Letters | 0 | - | 4.97 | 93,301 |
| Countries that End in N | 0 | - | 4.94 | 156,362 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,592 |
| Countries with Six Letters | 0 | - | 4.93 | 210,275 |
| Countries with W | 0 | - | 4.97 | 158,172 |
| Countries with Z | 0 | - | 4.98 | 287,765 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,492 |
| Countries That End in U | 0 | - | 4.95 | 119,484 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,461 |
| Countries that End in O | 0 | - | 4.92 | 158,519 |
| Countries that End in R | 0 | - | 4.87 | 118,244 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,841 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,939 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,258 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,448 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,878 |
| Countries That End in Y | 0 | - | 4.90 | 185,180 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,287 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,613 |
| Countries that End in I | 0 | - | 4.94 | 134,369 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,110 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,170 |
| Countries That End in NIA | 0 | - | 4.92 | 108,965 |
| Countries That End in BIA | 0 | - | 4.92 | 147,670 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,019 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,443 |
| Countries That End in RIA | 0 | - | 4.93 | 126,051 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,967 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,105 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,482 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,859 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,313 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,906 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,080 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,605 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,457 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,796 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,077 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,758 |
| Countries that End in L | 0 | - | 4.94 | 155,683 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,960 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,975 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,490 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,263 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,398 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,642 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,028 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,882 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,127 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,317 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,478 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,592 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,158 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,406 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,288 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,356 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,438 |
| One Border Countries | 0 | - | 4.98 | 464,048 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,799,466 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,585,926 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,615 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,772 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,811 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,815 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,438 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,536 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,198 |
| Countries by National Anthem | 0 | - | 4.92 | 71,010 |
| NATO Countries | 0 | - | 4.98 | 275,472 |
| EU Countries Quiz | 0 | - | 4.99 | 269,716 |
| Recently Independent Countries | 0 | - | 4.98 | 157,935 |
| French-Speaking Countries | 0 | - | 4.85 | 268,701 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,356 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,866 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,746 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,026 |
| German-Speaking Countries | 0 | - | 4.89 | 123,487 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,576 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,284 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,033 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,943 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 115,997 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,472 |
