| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,657 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,784 |
| Landlocked Countries | 0 | - | 4.99 | 420,872 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,431 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,490,194 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,245 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 98,839 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 61,808 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,943 |
| Himalayan Countries | 0 | - | 4.95 | 138,247 |
| Andean Countries | 0 | - | 4.95 | 84,339 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,566 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,462 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,189 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,612 |
| Danube Countries | 0 | - | 4.97 | 71,880 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,849 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,281 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,067 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,525 |
| European Landlocked Countries | 0 | - | 4.99 | 147,011 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,435 |
| Countries with the Most Species | 0 | - | 4.99 | 103,131 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,580 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,527 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,671 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,465 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,143 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,544 |
| Countries in the Alps | 0 | - | 4.87 | 118,019 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,121 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,800 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,566 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,492 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,362 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,858 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,516 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,378 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,102 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,728 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,578 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,436 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,101 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,374 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,399 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,631 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,203 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,717 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,864 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,377 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,775 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,134 |
| Largest Countries By Category | 0 | - | 4.97 | 157,992 |
| Countries by Countries | 0 | - | 4.96 | 63,060 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,515 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,229 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,524 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,551 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,770,243 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,602 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,159 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,497 |
| Island Countries | 0 | - | 4.99 | 710,584 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,382 |
| Northernmost Countries | 0 | - | 4.99 | 361,415 |
| Countries of South America | 0 | - | 5.00 | 925,612 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,740 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,873,231 |
| "Land" Countries | 0 | - | 4.98 | 336,886 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,729 |
| Top 10 Countries with the Most Volcanoes | 0 | - | 4.53 | 77,449 |
| Top 10 Countries with the Most Time Zones | 0 | - | 4.68 | 155,547 |
| Top 10 Most Protestant European Countries | 0 | - | 4.49 | 36,639 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,740 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,589 |
| Countries with Megacities | 0 | - | 4.99 | 263,735 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,433 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,308 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,702 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,354 |
| Countries by Official Language | 0 | - | 4.95 | 195,011 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,065 |
| Countries in their Native Language | 0 | - | 4.99 | 198,526 |
| Independence from Whom | 0 | - | 4.99 | 211,810 |
| Subdivisions by Country | 0 | - | 4.86 | 50,380 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,271 |
| Megadiverse Countries | 0 | - | 4.96 | 134,915 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,869 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,282 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,863 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,069 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,966 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,509 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,287 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,964 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,587 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,048 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,425 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,810 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,123 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,900 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,273 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,432 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,825 |
| World Map Quiz | 0 | - | 4.81 | 64,932 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,599 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,231 |
| Countries by Founding Story | 0 | - | 4.95 | 77,259 |
| Countries by Road Signs | 0 | - | 4.98 | 53,866 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,859 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,140 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,863 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,883 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,772 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,906 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,201 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,380 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,480 |
| Widest Countries East to West | 0 | - | 4.92 | 129,550 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,423 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,228 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,078 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,665 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,452 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,734 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,330 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,773 |
| Countries with Double Letters | 0 | - | 4.97 | 95,846 |
| Countries that End in N | 0 | - | 4.95 | 170,777 |
| Countries with Five Letters | 0 | - | 4.96 | 281,857 |
| Countries with Six Letters | 0 | - | 4.94 | 213,195 |
| Countries with W | 0 | - | 4.97 | 160,060 |
| Countries with Z | 0 | - | 4.98 | 291,045 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,415 |
| Countries That End in U | 0 | - | 4.95 | 120,693 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,188 |
| Countries that End in O | 0 | - | 4.92 | 159,405 |
| Countries that End in R | 0 | - | 4.87 | 118,876 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,649 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,798 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,474 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,322 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,078 |
| Countries That End in Y | 0 | - | 4.91 | 185,791 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,673 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,692 |
| Countries that End in I | 0 | - | 4.94 | 135,009 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,846 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,732 |
| Countries That End in NIA | 0 | - | 4.92 | 109,679 |
| Countries That End in BIA | 0 | - | 4.93 | 149,056 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,953 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,277 |
| Countries That End in RIA | 0 | - | 4.93 | 126,710 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,869 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,262 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,500 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,898 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,473 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,484 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,890 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,399 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,385 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,338 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,115 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,812 |
| Countries that End in L | 0 | - | 4.94 | 156,720 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,041 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,228 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,939 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,864 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,908 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,515 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,475 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,863 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,397 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,054 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,763 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,037 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,311 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,474 |
| One Border Countries | 0 | - | 4.98 | 468,844 |
| Countries that Eat the Most Fish | 0 | - | 4.26 | 71,865 |
| Top 10 Countries with the Most Fishermen | 0 | - | 4.30 | 45,349 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,830,277 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,625,878 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,764 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,912 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,966 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,589 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,113 |
| Countries by National Anthem | 0 | - | 4.93 | 71,253 |
| NATO Countries | 0 | - | 4.98 | 280,666 |
| EU Countries Quiz | 0 | - | 4.99 | 274,538 |
| Recently Independent Countries | 0 | - | 4.98 | 159,304 |
| French-Speaking Countries | 0 | - | 4.85 | 270,602 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,851 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,166 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,598 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,501 |
