| Landlocked Countries | 0 | - | 4.99 | 419,860 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,409,840 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,397 |
| Himalayan Countries | 0 | - | 4.95 | 137,821 |
| Andean Countries | 0 | - | 4.95 | 84,126 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,354 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,911 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,991 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,463 |
| Danube Countries | 0 | - | 4.97 | 71,757 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,686 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,153 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,835 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,912 |
| European Landlocked Countries | 0 | - | 4.99 | 146,880 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,264 |
| Countries with the Most Species | 0 | - | 4.99 | 103,024 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,423 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,462 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,634 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,387 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,060 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,460 |
| Countries in the Alps | 0 | - | 4.87 | 117,857 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,265 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,577 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,479 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,365 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,226 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,791 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,391 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,271 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,032 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,640 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,532 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,381 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,004 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,286 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,296 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,402 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,127 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,634 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,691 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,840 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,488 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,052 |
| Largest Countries By Category | 0 | - | 4.97 | 157,810 |
| Countries by Countries | 0 | - | 4.97 | 62,939 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,361 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,186 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,494 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,871 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,740 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,439 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,763,340 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,804 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,862 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,873 |
| Island Countries | 0 | - | 4.99 | 710,152 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,125 |
| Northernmost Countries | 0 | - | 4.99 | 360,936 |
| Countries of South America | 0 | - | 5.00 | 924,234 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,021 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,811 |
| "Land" Countries | 0 | - | 4.98 | 336,041 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,378,038 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,298 |
| Countries with Megacities | 0 | - | 4.99 | 262,666 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,135 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,141 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,435 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,188 |
| Countries by Official Language | 0 | - | 4.95 | 194,825 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,779 |
| Countries in their Native Language | 0 | - | 4.99 | 198,369 |
| Independence from Whom | 0 | - | 4.99 | 211,571 |
| Subdivisions by Country | 0 | - | 4.86 | 50,333 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,876 |
| Megadiverse Countries | 0 | - | 4.96 | 134,835 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,694 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,226 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,800 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,042 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,837 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,446 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,114 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,899 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,535 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,024 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,215 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,769 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,053 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,837 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,215 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,381 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,481 |
| World Map Quiz | 0 | - | 4.81 | 64,762 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,058 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,134 |
| Countries by Founding Story | 0 | - | 4.95 | 77,152 |
| Countries by Road Signs | 0 | - | 4.98 | 53,745 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,680 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,035 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,767 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,619 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,634 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,779 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,913 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,327 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,370 |
| Widest Countries East to West | 0 | - | 4.92 | 129,450 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,406 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,087 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,036 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,593 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,335 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,652 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,286 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,748 |
| Countries with Double Letters | 0 | - | 4.97 | 95,283 |
| Countries that End in N | 0 | - | 4.95 | 170,298 |
| Countries with Five Letters | 0 | - | 4.96 | 281,073 |
| Countries with Six Letters | 0 | - | 4.94 | 212,721 |
| Countries with W | 0 | - | 4.97 | 159,651 |
| Countries with Z | 0 | - | 4.98 | 290,513 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,905 |
| Countries That End in U | 0 | - | 4.95 | 120,483 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,917 |
| Countries that End in O | 0 | - | 4.92 | 159,262 |
| Countries that End in R | 0 | - | 4.87 | 118,779 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,552 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,514 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,273 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,172 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,786 |
| Countries That End in Y | 0 | - | 4.91 | 185,692 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,445 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,539 |
| Countries that End in I | 0 | - | 4.94 | 134,923 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,645 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,638 |
| Countries That End in NIA | 0 | - | 4.92 | 109,581 |
| Countries That End in BIA | 0 | - | 4.93 | 148,930 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,833 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,160 |
| Countries That End in RIA | 0 | - | 4.93 | 126,599 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,739 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,964 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,349 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,737 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,266 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,392 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,752 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,332 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,244 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,250 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,933 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,663 |
| Countries that End in L | 0 | - | 4.94 | 156,614 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,509 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,173 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,892 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,789 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,838 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,973 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,320 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,744 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,256 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,753 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,655 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,997 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,621 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,735 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,752 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,105 |
| One Border Countries | 0 | - | 4.98 | 468,264 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,342 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,826,446 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,620,091 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,660 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,647 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,816 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,354 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,480 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,027 |
| Countries by National Anthem | 0 | - | 4.92 | 71,216 |
| NATO Countries | 0 | - | 4.98 | 279,920 |
| EU Countries Quiz | 0 | - | 4.99 | 273,585 |
| Recently Independent Countries | 0 | - | 4.98 | 159,162 |
| French-Speaking Countries | 0 | - | 4.85 | 270,395 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,795 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,875 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,010 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,675 |
| German-Speaking Countries | 0 | - | 4.91 | 145,491 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,758 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,135 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,516 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,129 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,174 |
