| Spanish-Speaking Countries | 0 | - | 4.95 | 376,163 |
| Countries by Official Language | 0 | - | 4.95 | 195,679 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,173 |
| Countries in their Native Language | 0 | - | 4.99 | 199,451 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,469 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,596 |
| Landlocked Countries | 0 | - | 4.99 | 424,022 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,746,842 |
| French-Speaking Countries | 0 | - | 4.85 | 271,347 |
| German-Speaking Countries | 0 | - | 4.92 | 145,911 |
| Spanish to English Country Names | 0 | - | 4.86 | 33,663 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,428 |
| Himalayan Countries | 0 | - | 4.94 | 139,605 |
| Andean Countries | 0 | - | 4.94 | 85,092 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,286 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,512 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,847 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,147 |
| Danube Countries | 0 | - | 4.97 | 72,227 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,337 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,652 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,752 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,254 |
| European Landlocked Countries | 0 | - | 4.99 | 147,404 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,010 |
| Countries with the Most Species | 0 | - | 4.99 | 103,438 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,133 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,690 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,801 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,712 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,445 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,859 |
| Countries in the Alps | 0 | - | 4.87 | 118,508 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,137 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,490 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,824 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,826 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,758 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,106 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,946 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,689 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,313 |
| 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 | 41,637 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,401 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,643 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,735 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,407 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,483 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,342 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,386 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,996 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,713 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,394 |
| Largest Countries By Category | 0 | - | 4.97 | 158,570 |
| Countries by Countries | 0 | - | 4.96 | 63,455 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,031 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,353 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,629 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,220 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,926 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,291 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.95 | 124,838 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,412 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,662 |
| Island Countries | 0 | - | 4.99 | 711,852 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,698 |
| Northernmost Countries | 0 | - | 4.99 | 363,185 |
| Countries of South America | 0 | - | 5.00 | 930,184 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,563 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,943 |
| "Land" Countries | 0 | - | 4.98 | 337,927 |
| Top World Languages | 0 | - | 4.92 | 827,474 |
| 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 | 3,389,238 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,489 |
| Countries with Megacities | 0 | - | 4.99 | 265,960 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,286 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,766 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,535 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,884 |
| Independence from Whom | 0 | - | 4.99 | 212,632 |
| Subdivisions by Country | 0 | - | 4.87 | 50,543 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,128 |
| Megadiverse Countries | 0 | - | 4.96 | 135,162 |
| 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 | 163,388 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,713 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,800 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,476 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,753 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,210 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,119 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,277 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,343 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,068 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,484 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,612 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,883 |
| World Map Quiz | 0 | - | 4.81 | 65,391 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,379 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,542 |
| Countries by Founding Story | 0 | - | 4.95 | 77,600 |
| Countries by Road Signs | 0 | - | 4.98 | 54,220 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,830 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,727 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,374 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,045 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,224 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,352 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,555 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,595 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,498 |
| Widest Countries East to West | 0 | - | 4.92 | 130,240 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,544 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,048 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,448 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,944 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,819 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,271 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,453 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,855 |
| Countries with Double Letters | 0 | - | 4.96 | 96,717 |
| Countries that End in N | 0 | - | 4.95 | 171,597 |
| Countries with Five Letters | 0 | - | 4.96 | 283,259 |
| Countries with Six Letters | 0 | - | 4.94 | 214,060 |
| Countries with W | 0 | - | 4.96 | 160,666 |
| Countries with Z | 0 | - | 4.98 | 292,015 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,036 |
| Countries That End in U | 0 | - | 4.95 | 121,040 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,825 |
| Countries that End in O | 0 | - | 4.92 | 159,685 |
| Countries that End in R | 0 | - | 4.87 | 119,082 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,837 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,500 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,953 |
| 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 | 153,093 |
| Countries that End in I | 0 | - | 4.94 | 135,224 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,405 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,949 |
| Countries That End in NIA | 0 | - | 4.92 | 109,937 |
| Countries That End in BIA | 0 | - | 4.93 | 149,417 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,352 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,644 |
| Countries That End in RIA | 0 | - | 4.93 | 126,952 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,235 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,147 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,975 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,414 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,965 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,702 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,208 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,736 |
| 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 | 54,224 |
| Countries that End in L | 0 | - | 4.94 | 157,007 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,806 |
| 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 | 119,098 |
| 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 | 200,939 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,315 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,079 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,752 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,072 |
| 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 | 63,132 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,976 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,512 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,807 |
| One Border Countries | 0 | - | 4.98 | 471,073 |
| Countries With the Most Italian Speakers | 0 | - | 4.49 | 58,134 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,699 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,644,244 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,139 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,643 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,453 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,744 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,004 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,416 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,599 |
| Countries by National Anthem | 0 | - | 4.92 | 71,364 |
| NATO Countries | 0 | - | 4.98 | 282,582 |
| EU Countries Quiz | 0 | - | 4.99 | 276,824 |
| Recently Independent Countries | 0 | - | 4.98 | 159,737 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,984 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,249 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,376 |
