| Landlocked Countries | 0 | - | 4.99 | 421,058 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,506,869 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,025 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,012 |
| Himalayan Countries | 0 | - | 4.95 | 138,325 |
| Andean Countries | 0 | - | 4.93 | 84,382 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,603 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,517 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,232 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,636 |
| Danube Countries | 0 | - | 4.97 | 71,905 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,883 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,308 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,103 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,577 |
| European Landlocked Countries | 0 | - | 4.99 | 147,036 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,468 |
| Countries with the Most Species | 0 | - | 4.99 | 103,154 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,620 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,535 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,677 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,474 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,153 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,561 |
| Countries in the Alps | 0 | - | 4.87 | 118,049 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,381 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,846 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,581 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,509 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,386 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,874 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,543 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,404 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,115 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,755 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,587 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,449 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,122 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,388 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,421 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,672 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,218 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,729 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,890 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,481 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,831 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,147 |
| Largest Countries By Category | 0 | - | 4.97 | 158,024 |
| Countries by Countries | 0 | - | 4.96 | 63,088 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,547 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,239 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,530 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,570 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,771,751 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,771 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,245 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,638 |
| Island Countries | 0 | - | 4.99 | 710,671 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,633 |
| Northernmost Countries | 0 | - | 4.99 | 361,529 |
| Countries of South America | 0 | - | 5.00 | 925,911 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,132 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,873,987 |
| "Land" Countries | 0 | - | 4.98 | 337,021 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,226 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,640 |
| Countries with Megacities | 0 | - | 4.99 | 263,901 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,487 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,334 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,763 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,391 |
| Countries by Official Language | 0 | - | 4.95 | 195,053 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,120 |
| Countries in their Native Language | 0 | - | 4.99 | 198,602 |
| Independence from Whom | 0 | - | 4.99 | 211,865 |
| Subdivisions by Country | 0 | - | 4.86 | 50,386 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,558 |
| Megadiverse Countries | 0 | - | 4.96 | 134,932 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,917 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,293 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,872 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,075 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,994 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,537 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,335 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,975 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,593 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,053 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,477 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,823 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,132 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,908 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,296 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,440 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,894 |
| World Map Quiz | 0 | - | 4.81 | 64,957 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,734 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,259 |
| Countries by Founding Story | 0 | - | 4.95 | 77,284 |
| Countries by Road Signs | 0 | - | 4.98 | 53,887 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,897 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,162 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,886 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,947 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,801 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,923 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,219 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,390 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,501 |
| Widest Countries East to West | 0 | - | 4.92 | 129,562 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,429 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,266 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,086 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,696 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,475 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,761 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,333 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,780 |
| Countries with Double Letters | 0 | - | 4.96 | 95,951 |
| Countries that End in N | 0 | - | 4.95 | 170,859 |
| Countries with Five Letters | 0 | - | 4.96 | 281,983 |
| Countries with Six Letters | 0 | - | 4.94 | 213,275 |
| Countries with W | 0 | - | 4.97 | 160,126 |
| Countries with Z | 0 | - | 4.98 | 291,148 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,484 |
| Countries That End in U | 0 | - | 4.95 | 120,736 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,253 |
| Countries that End in O | 0 | - | 4.92 | 159,430 |
| Countries that End in R | 0 | - | 4.87 | 118,899 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,668 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,852 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,547 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,379 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,281 |
| Countries That End in Y | 0 | - | 4.91 | 185,806 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,741 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,729 |
| Countries that End in I | 0 | - | 4.94 | 135,028 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,911 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,752 |
| Countries That End in NIA | 0 | - | 4.92 | 109,698 |
| Countries That End in BIA | 0 | - | 4.93 | 149,098 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,982 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,313 |
| Countries That End in RIA | 0 | - | 4.93 | 126,735 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,907 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,310 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,537 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,943 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,510 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,507 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,923 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,412 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,417 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,360 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,153 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,846 |
| Countries that End in L | 0 | - | 4.94 | 156,746 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,175 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,238 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,950 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,888 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,915 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,561 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,513 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,892 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,415 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,274 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,790 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,048 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,670 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,802 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,671 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,573 |
| One Border Countries | 0 | - | 4.98 | 469,023 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,831,050 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,626,937 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,785 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,973 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,990 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,454 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,610 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,130 |
| Countries by National Anthem | 0 | - | 4.93 | 71,262 |
| NATO Countries | 0 | - | 4.98 | 280,814 |
| EU Countries Quiz | 0 | - | 4.99 | 274,707 |
| Recently Independent Countries | 0 | - | 4.98 | 159,354 |
| French-Speaking Countries | 0 | - | 4.85 | 270,656 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,861 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,222 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,739 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,678 |
| German-Speaking Countries | 0 | - | 4.91 | 145,633 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,880 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,215 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 165,986 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,801 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,591 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,803 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,056 |
