| Countries by National Anthem | 0 | - | 4.92 | 71,393 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,816,505 |
| Landlocked Countries | 0 | - | 4.99 | 424,906 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,938 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,828 |
| Himalayan Countries | 0 | - | 4.93 | 139,915 |
| Andean Countries | 0 | - | 4.94 | 85,258 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,424 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,760 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,992 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,295 |
| Danube Countries | 0 | - | 4.97 | 72,302 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,462 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,746 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,933 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,434 |
| European Landlocked Countries | 0 | - | 4.99 | 147,503 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,156 |
| Countries with the Most Species | 0 | - | 4.99 | 103,510 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,293 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,726 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,839 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,775 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,508 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,939 |
| Countries in the Alps | 0 | - | 4.87 | 118,656 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,431 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,687 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,906 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,933 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,859 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,174 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,297 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,796 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,362 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,100 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,810 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,686 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,481 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,716 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,813 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,617 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,547 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,642 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,542 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,370 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,938 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,460 |
| Largest Countries By Category | 0 | - | 4.97 | 158,732 |
| Countries by Countries | 0 | - | 4.96 | 63,550 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,161 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,377 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,652 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,021 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,796 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,441 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,229 |
| Island Countries | 0 | - | 4.99 | 712,242 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,777 |
| Northernmost Countries | 0 | - | 4.99 | 363,619 |
| Countries of South America | 0 | - | 5.00 | 931,515 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,872 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,602 |
| "Land" Countries | 0 | - | 4.98 | 338,196 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,792 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,937 |
| Countries with Megacities | 0 | - | 4.99 | 266,687 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,641 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,994 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,944 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,112 |
| Countries by Official Language | 0 | - | 4.95 | 195,851 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,442 |
| Countries in their Native Language | 0 | - | 4.99 | 199,623 |
| Independence from Whom | 0 | - | 4.99 | 212,881 |
| Subdivisions by Country | 0 | - | 4.87 | 50,582 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,305 |
| Megadiverse Countries | 0 | - | 4.96 | 135,220 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,834 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,500 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,406 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,201 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,501 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,796 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,005 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,527 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,789 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,234 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,338 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,332 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,401 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,115 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,543 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,657 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,139 |
| World Map Quiz | 0 | - | 4.81 | 65,564 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,849 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,628 |
| Countries by Founding Story | 0 | - | 4.95 | 77,727 |
| Countries by Road Signs | 0 | - | 4.98 | 54,292 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,086 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,988 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,474 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,358 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,330 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,454 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,656 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,643 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,443 |
| Widest Countries East to West | 0 | - | 4.92 | 130,371 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,167 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,486 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,004 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,904 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,399 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,475 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,876 |
| Countries with Double Letters | 0 | - | 4.96 | 96,910 |
| Countries that End in N | 0 | - | 4.94 | 171,788 |
| Countries with Five Letters | 0 | - | 4.96 | 283,545 |
| Countries with Six Letters | 0 | - | 4.94 | 214,273 |
| Countries with W | 0 | - | 4.96 | 160,827 |
| Countries with Z | 0 | - | 4.98 | 292,258 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,177 |
| Countries That End in U | 0 | - | 4.95 | 121,115 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,984 |
| Countries that End in O | 0 | - | 4.92 | 159,797 |
| Countries that End in R | 0 | - | 4.87 | 119,133 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,893 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,703 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,061 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,760 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,690 |
| Countries That End in Y | 0 | - | 4.91 | 186,051 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,354 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,189 |
| Countries that End in I | 0 | - | 4.94 | 135,271 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,519 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,009 |
| Countries That End in NIA | 0 | - | 4.92 | 109,995 |
| Countries That End in BIA | 0 | - | 4.93 | 149,518 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,441 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,705 |
| Countries That End in RIA | 0 | - | 4.93 | 127,016 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,310 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,412 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,081 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,523 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,095 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,764 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,269 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,520 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,828 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,609 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,637 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,327 |
| Countries that End in L | 0 | - | 4.94 | 157,070 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,693 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,330 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,279 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,835 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,378 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,306 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,065 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,383 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,184 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,883 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,150 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,211 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,804 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,189 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,922 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,178 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,845,839 |
| One Border Countries | 0 | - | 4.98 | 471,575 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,649,081 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,259 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,877 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,573 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,846 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,131 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,523 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,229 |
| NATO Countries | 0 | - | 4.98 | 283,056 |
| EU Countries Quiz | 0 | - | 4.99 | 277,394 |
| Recently Independent Countries | 0 | - | 4.98 | 159,929 |
| French-Speaking Countries | 0 | - | 4.85 | 271,517 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,016 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,546 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,959 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,494 |
| German-Speaking Countries | 0 | - | 4.92 | 145,970 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,113,284 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,196 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,484 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,974 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,743 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,132 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,041 |
