| Countries of Europe Quiz | 0 | - | 5.00 | 3,731,366 |
| Countries of South America | 0 | - | 5.00 | 917,880 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,317 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,544 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,162 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,598 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,959 |
| Five Most Elevated Countries by Continent | 0 | - | 4.98 | 112,549 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 119,639 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,062,019 |
| Landlocked Countries | 0 | - | 4.99 | 415,421 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,323 |
| Himalayan Countries | 0 | - | 4.95 | 135,997 |
| Andean Countries | 0 | - | 4.94 | 83,175 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,503 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,637 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,189 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,836 |
| Danube Countries | 0 | - | 4.97 | 71,271 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,005 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,716 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,876 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,828 |
| European Landlocked Countries | 0 | - | 4.99 | 145,970 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,532 |
| Countries with the Most Species | 0 | - | 4.99 | 95,349 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,658 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,271 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,442 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,069 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,719 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,080 |
| Countries in the Alps | 0 | - | 4.86 | 117,133 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,763 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,606 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,162 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,595 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,382 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,144 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,809 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,901 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,697 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,208 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,277 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,142 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,622 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,884 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,894 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,475 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,801 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,350 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,040 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,302 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,210 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,735 |
| Largest Countries By Category | 0 | - | 4.97 | 157,039 |
| Countries by Countries | 0 | - | 4.96 | 62,449 |
| Five Least Guessed Countries by Continent | 0 | - | 4.97 | 97,490 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,677 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,029 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,379 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,953 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,015,195 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,038 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,814 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,338 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,865 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,816 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,814 |
| Island Countries | 0 | - | 4.99 | 708,346 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,789 |
| Northernmost Countries | 0 | - | 4.99 | 358,728 |
| "Land" Countries | 0 | - | 4.98 | 334,113 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,235 |
| Five Most Guessed Countries by Continent | 0 | - | 4.96 | 171,817 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,266 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,920 |
| Countries with Megacities | 0 | - | 4.99 | 248,218 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,820 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,366 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,199 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,302 |
| Countries by Official Language | 0 | - | 4.95 | 193,197 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,739 |
| Countries in their Native Language | 0 | - | 4.99 | 197,031 |
| Independence from Whom | 0 | - | 4.99 | 210,173 |
| Subdivisions by Country | 0 | - | 4.86 | 50,151 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,072 |
| Megadiverse Countries | 0 | - | 4.96 | 134,459 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,197 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,016 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,550 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,908 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,889 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,132 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,339 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,454 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,304 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,788 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,936 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,522 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,627 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,585 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,800 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,125 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,151 |
| World Map Quiz | 0 | - | 4.81 | 63,805 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,672 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,590 |
| Countries by Founding Story | 0 | - | 4.95 | 76,725 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,793 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,525 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,253 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,357 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,119 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,320 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,510 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,082 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,532 |
| Widest Countries East to West | 0 | - | 4.92 | 129,032 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,287 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,497 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,658 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,868 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,839 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,235 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,717 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,643 |
| Countries with Double Letters | 0 | - | 4.96 | 93,710 |
| Countries that End in N | 0 | - | 4.94 | 157,156 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,051 |
| Countries with Six Letters | 0 | - | 4.93 | 210,727 |
| Countries with W | 0 | - | 4.97 | 158,433 |
| Countries with Z | 0 | - | 4.98 | 288,268 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,775 |
| Countries That End in U | 0 | - | 4.95 | 119,623 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,894 |
| Countries that End in O | 0 | - | 4.92 | 158,667 |
| Countries that End in R | 0 | - | 4.87 | 118,382 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,940 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,435 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,573 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,662 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,210 |
| Countries That End in Y | 0 | - | 4.90 | 185,294 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,631 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,914 |
| Countries that End in I | 0 | - | 4.94 | 134,549 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,490 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,307 |
| Countries That End in NIA | 0 | - | 4.92 | 109,127 |
| Countries That End in BIA | 0 | - | 4.92 | 147,860 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,272 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,642 |
| Countries That End in RIA | 0 | - | 4.93 | 126,203 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,189 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,751 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,697 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,045 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,599 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,035 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,292 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,811 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,697 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,905 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,357 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,006 |
| Countries that End in L | 0 | - | 4.94 | 156,169 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,208 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,023 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,630 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,466 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,534 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,012 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,649 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,794 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,666 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,052 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,934 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,825 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,245 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,469 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,429 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,027 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,405 |
| One Border Countries | 0 | - | 4.98 | 465,746 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,911 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,808,412 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,597,336 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,162 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,637 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,529 |
| Countries by National Anthem | 0 | - | 4.93 | 71,078 |
| NATO Countries | 0 | - | 4.98 | 277,297 |
| EU Countries Quiz | 0 | - | 4.99 | 270,956 |
| Recently Independent Countries | 0 | - | 4.98 | 158,220 |
| French-Speaking Countries | 0 | - | 4.85 | 269,304 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,456 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,567 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,797 |
