| Spanish-Speaking Countries | 0 | - | 4.95 | 376,159 |
| Countries by Official Language | 0 | - | 4.95 | 195,677 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,165 |
| Countries in their Native Language | 0 | - | 4.99 | 199,450 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,467 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,596 |
| French-Speaking Countries | 0 | - | 4.85 | 271,343 |
| German-Speaking Countries | 0 | - | 4.92 | 145,911 |
| Spanish to English Country Names | 0 | - | 4.86 | 33,661 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,745,819 |
| Landlocked Countries | 0 | - | 4.99 | 424,004 |
| English Speaking Countries | 0 | - | 4.64 | 357,947 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,209 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,423 |
| Himalayan Countries | 0 | - | 4.94 | 139,596 |
| Andean Countries | 0 | - | 4.94 | 85,088 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,282 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,509 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,846 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,142 |
| Danube Countries | 0 | - | 4.97 | 72,225 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,336 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,651 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,745 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,251 |
| European Landlocked Countries | 0 | - | 4.99 | 147,399 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,008 |
| Countries with the Most Species | 0 | - | 4.99 | 103,434 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,131 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,690 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,800 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,711 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,443 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,858 |
| Countries in the Alps | 0 | - | 4.87 | 118,508 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,130 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,488 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,823 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,823 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,757 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,105 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,945 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,687 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,312 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,028 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,770 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,635 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,400 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,643 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,734 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,404 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,483 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,331 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,385 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,985 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,709 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,393 |
| Largest Countries By Category | 0 | - | 4.97 | 158,567 |
| Countries by Countries | 0 | - | 4.96 | 63,455 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,030 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,351 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,628 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,218 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,924 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.95 | 124,838 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,402 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,655 |
| Island Countries | 0 | - | 4.99 | 711,848 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,681 |
| Northernmost Countries | 0 | - | 4.99 | 363,176 |
| Countries of South America | 0 | - | 5.00 | 930,160 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,544 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,893 |
| "Land" Countries | 0 | - | 4.98 | 337,923 |
| Top World Languages | 0 | - | 4.92 | 827,456 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.75 | 127,997 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,208 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,486 |
| Countries with Megacities | 0 | - | 4.99 | 265,946 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,281 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,765 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,535 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,883 |
| Independence from Whom | 0 | - | 4.99 | 212,627 |
| Subdivisions by Country | 0 | - | 4.87 | 50,543 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,121 |
| Megadiverse Countries | 0 | - | 4.96 | 135,161 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,355 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,167 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,387 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,711 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,796 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,476 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,752 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,210 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,115 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,276 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,341 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,065 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,482 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,611 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,881 |
| World Map Quiz | 0 | - | 4.81 | 65,390 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,365 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,542 |
| Countries by Founding Story | 0 | - | 4.95 | 77,596 |
| Countries by Road Signs | 0 | - | 4.98 | 54,217 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,816 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,726 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,373 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,035 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,222 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,349 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,552 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,594 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,464 |
| Widest Countries East to West | 0 | - | 4.92 | 130,239 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,544 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,045 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,447 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,943 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,818 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,255 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,453 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,854 |
| Countries with Double Letters | 0 | - | 4.96 | 96,711 |
| Countries that End in N | 0 | - | 4.95 | 171,593 |
| Countries with Five Letters | 0 | - | 4.96 | 283,255 |
| Countries with Six Letters | 0 | - | 4.94 | 214,057 |
| Countries with W | 0 | - | 4.96 | 160,662 |
| Countries with Z | 0 | - | 4.98 | 292,012 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,033 |
| Countries That End in U | 0 | - | 4.95 | 121,039 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,824 |
| Countries that End in O | 0 | - | 4.92 | 159,683 |
| Countries that End in R | 0 | - | 4.87 | 119,081 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,837 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,496 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,952 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,669 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,593 |
| Countries That End in Y | 0 | - | 4.91 | 186,008 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,219 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,092 |
| Countries that End in I | 0 | - | 4.94 | 135,224 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,403 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,945 |
| Countries That End in NIA | 0 | - | 4.92 | 109,935 |
| Countries That End in BIA | 0 | - | 4.93 | 149,417 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,350 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,644 |
| Countries That End in RIA | 0 | - | 4.93 | 126,951 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,234 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,144 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,974 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,412 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,965 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,700 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,207 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,735 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,556 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,533 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,222 |
| Countries that End in L | 0 | - | 4.94 | 157,006 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,797 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,309 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,162 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,097 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,144 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,143 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,937 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,311 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,076 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,750 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,071 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,176 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,763 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,130 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,970 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,488 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,800 |
| One Border Countries | 0 | - | 4.98 | 471,065 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,652 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,644,122 |
| Countries With the Most Italian Speakers | 0 | - | 4.49 | 58,134 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,138 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,641 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,451 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,743 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,000 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,414 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,599 |
| Countries by National Anthem | 0 | - | 4.92 | 71,363 |
| NATO Countries | 0 | - | 4.98 | 282,575 |
| EU Countries Quiz | 0 | - | 4.99 | 276,810 |
| Recently Independent Countries | 0 | - | 4.98 | 159,735 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,984 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,241 |
