| Countries of Europe Quiz | 0 | - | 5.00 | 3,804,297 |
| Countries of South America | 0 | - | 5.00 | 932,657 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,326 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,211 |
| Landlocked Countries | 0 | - | 4.99 | 425,844 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,877,610 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,253 |
| Himalayan Countries | 0 | - | 4.93 | 140,235 |
| Andean Countries | 0 | - | 4.94 | 85,454 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,604 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,997 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,163 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,434 |
| Danube Countries | 0 | - | 4.97 | 72,389 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,593 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,841 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,116 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,609 |
| European Landlocked Countries | 0 | - | 4.99 | 147,601 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,297 |
| Countries with the Most Species | 0 | - | 4.99 | 103,561 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,404 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,775 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,886 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,838 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,576 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,014 |
| Countries in the Alps | 0 | - | 4.87 | 118,772 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,628 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,859 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,961 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,022 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,952 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,251 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,401 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,863 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,422 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,178 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,871 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,744 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,559 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,794 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,888 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,834 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,609 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 70,748 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,666 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,702 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,144 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,505 |
| Largest Countries By Category | 0 | - | 4.97 | 158,863 |
| Countries by Countries | 0 | - | 4.96 | 63,641 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,261 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,400 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,670 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,107 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,395 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,684 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,686 |
| Island Countries | 0 | - | 4.99 | 712,563 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,703 |
| Northernmost Countries | 0 | - | 4.99 | 363,993 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,031,452 |
| "Land" Countries | 0 | - | 4.98 | 338,381 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,634 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,154 |
| Countries with Megacities | 0 | - | 4.99 | 267,107 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,841 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,129 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,154 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,238 |
| Countries by Official Language | 0 | - | 4.95 | 195,991 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,629 |
| Countries in their Native Language | 0 | - | 4.99 | 199,738 |
| Independence from Whom | 0 | - | 4.99 | 213,066 |
| Subdivisions by Country | 0 | - | 4.87 | 50,617 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,440 |
| Megadiverse Countries | 0 | - | 4.96 | 135,279 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,942 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,542 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,663 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,228 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,055 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,854 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,115 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,569 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,048 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,258 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,530 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,378 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,443 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,147 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,584 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,850 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,357 |
| World Map Quiz | 0 | - | 4.81 | 65,733 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,256 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,716 |
| Countries by Founding Story | 0 | - | 4.95 | 77,796 |
| Countries by Road Signs | 0 | - | 4.98 | 54,348 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,251 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,083 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,563 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,576 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,431 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,532 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,729 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,690 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,714 |
| Widest Countries East to West | 0 | - | 4.92 | 130,459 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,598 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,256 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,518 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,065 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,972 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,485 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,502 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,892 |
| Countries with Double Letters | 0 | - | 4.96 | 97,076 |
| Countries that End in N | 0 | - | 4.95 | 171,935 |
| Countries with Five Letters | 0 | - | 4.96 | 283,770 |
| Countries with Six Letters | 0 | - | 4.94 | 214,468 |
| Countries with W | 0 | - | 4.96 | 160,938 |
| Countries with Z | 0 | - | 4.98 | 292,451 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,287 |
| Countries That End in U | 0 | - | 4.95 | 121,192 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,109 |
| Countries that End in O | 0 | - | 4.92 | 160,216 |
| Countries that End in R | 0 | - | 4.87 | 119,184 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,939 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,837 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,152 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,830 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,762 |
| Countries That End in Y | 0 | - | 4.91 | 186,090 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,459 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,275 |
| Countries that End in I | 0 | - | 4.94 | 135,316 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,625 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,060 |
| Countries That End in NIA | 0 | - | 4.92 | 110,056 |
| Countries That End in BIA | 0 | - | 4.93 | 149,576 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,550 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,774 |
| Countries That End in RIA | 0 | - | 4.93 | 127,055 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,392 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,593 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,184 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,628 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,176 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,808 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,330 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,538 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,908 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,654 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,728 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,420 |
| Countries that End in L | 0 | - | 4.94 | 157,131 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,025 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,345 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,515 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,000 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,452 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,433 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,143 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,433 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,264 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,973 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,213 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,239 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,830 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,246 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,102 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,490 |
| One Border Countries | 0 | - | 4.98 | 471,940 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,697 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,848,746 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,652,910 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,325 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,031 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,654 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,901 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,214 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,612 |
| Countries by National Anthem | 0 | - | 4.92 | 71,408 |
| NATO Countries | 0 | - | 4.98 | 283,429 |
| EU Countries Quiz | 0 | - | 4.99 | 277,912 |
| Recently Independent Countries | 0 | - | 4.98 | 160,355 |
| French-Speaking Countries | 0 | - | 4.85 | 271,677 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,042 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,788 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,382 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,971 |
| German-Speaking Countries | 0 | - | 4.92 | 146,024 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,339 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,554 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,209 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,373 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,425 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,810 |
