| Landlocked Countries | 0 | - | 4.99 | 426,738 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,931,280 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,657 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,664 |
| Himalayan Countries | 0 | - | 4.93 | 140,594 |
| Andean Countries | 0 | - | 4.94 | 85,676 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,809 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,305 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,365 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,592 |
| Danube Countries | 0 | - | 4.97 | 72,495 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,716 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,917 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,322 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,772 |
| European Landlocked Countries | 0 | - | 4.99 | 147,685 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,434 |
| Countries with the Most Species | 0 | - | 4.99 | 103,613 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,549 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,795 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,925 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,893 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,634 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,089 |
| Countries in the Alps | 0 | - | 4.87 | 118,887 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,843 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,030 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,024 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,117 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,059 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,339 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,501 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,944 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,480 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,264 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,928 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,802 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,627 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,867 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,971 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,042 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,675 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,861 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,769 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,022 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,342 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,572 |
| Largest Countries By Category | 0 | - | 4.97 | 158,977 |
| Countries by Countries | 0 | - | 4.97 | 63,735 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,357 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,431 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,694 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,177 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,808,854 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,127 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,901 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,072 |
| Island Countries | 0 | - | 4.99 | 712,805 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,538 |
| Northernmost Countries | 0 | - | 4.99 | 364,349 |
| Countries of South America | 0 | - | 5.00 | 933,586 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,584 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,367 |
| "Land" Countries | 0 | - | 4.98 | 338,680 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,638 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,366 |
| Countries with Megacities | 0 | - | 4.99 | 267,539 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,024 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,255 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,350 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,359 |
| Countries by Official Language | 0 | - | 4.95 | 196,136 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,812 |
| Countries in their Native Language | 0 | - | 4.99 | 199,862 |
| Independence from Whom | 0 | - | 4.99 | 213,273 |
| Subdivisions by Country | 0 | - | 4.87 | 50,644 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,580 |
| Megadiverse Countries | 0 | - | 4.96 | 146,769 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,054 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,560 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,760 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,242 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,376 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,899 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,206 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,600 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,131 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,279 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,670 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,446 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,475 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,189 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,612 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,929 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,573 |
| World Map Quiz | 0 | - | 4.81 | 65,862 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,615 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,768 |
| Countries by Founding Story | 0 | - | 4.95 | 77,872 |
| Countries by Road Signs | 0 | - | 4.98 | 54,403 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,408 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,169 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,638 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,766 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,499 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,615 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,803 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,737 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,870 |
| Widest Countries East to West | 0 | - | 4.92 | 130,789 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,620 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,327 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,542 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,112 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,062 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,555 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,522 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,911 |
| Countries with Double Letters | 0 | - | 4.96 | 97,354 |
| Countries that End in N | 0 | - | 4.95 | 172,422 |
| Countries with Five Letters | 0 | - | 4.96 | 284,349 |
| Countries with Six Letters | 0 | - | 4.94 | 214,737 |
| Countries with W | 0 | - | 4.96 | 161,138 |
| Countries with Z | 0 | - | 4.98 | 292,734 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,486 |
| Countries That End in U | 0 | - | 4.95 | 121,298 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,272 |
| Countries that End in O | 0 | - | 4.92 | 160,298 |
| Countries that End in R | 0 | - | 4.87 | 119,238 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,008 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,008 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 178,845 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,994 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,231 |
| Countries That End in Y | 0 | - | 4.91 | 186,135 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,844 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,352 |
| Countries that End in I | 0 | - | 4.94 | 135,374 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,928 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,106 |
| Countries That End in NIA | 0 | - | 4.92 | 110,113 |
| Countries That End in BIA | 0 | - | 4.93 | 149,673 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,854 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,838 |
| Countries That End in RIA | 0 | - | 4.93 | 127,106 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,481 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,801 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,293 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,755 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,307 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,864 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,389 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,569 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,984 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,688 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,827 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,522 |
| Countries that End in L | 0 | - | 4.94 | 157,195 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,315 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,367 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,708 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,088 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,512 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,571 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,235 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,484 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,360 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,106 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,283 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,274 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,962 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,859 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,316 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,206 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,770 |
| One Border Countries | 0 | - | 4.98 | 472,309 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,730 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,851,216 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,656,971 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,415 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,394 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,749 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,954 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,309 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,684 |
| Countries by National Anthem | 0 | - | 4.92 | 71,424 |
| NATO Countries | 0 | - | 4.98 | 283,755 |
| EU Countries Quiz | 0 | - | 4.99 | 278,480 |
| Recently Independent Countries | 0 | - | 4.98 | 160,438 |
| French-Speaking Countries | 0 | - | 4.85 | 271,794 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,201 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,042 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,675 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,396 |
| German-Speaking Countries | 0 | - | 4.92 | 146,060 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,668 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,793 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,509 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,621 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,685 |
