| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,601 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,670 |
| Landlocked Countries | 0 | - | 4.99 | 419,000 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,280 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,338,307 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,131 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 98,713 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 61,673 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,017 |
| Himalayan Countries | 0 | - | 4.94 | 137,450 |
| Andean Countries | 0 | - | 4.95 | 83,950 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,237 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,682 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,842 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,360 |
| Danube Countries | 0 | - | 4.97 | 71,670 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,560 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,064 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,666 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,743 |
| European Landlocked Countries | 0 | - | 4.99 | 146,782 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,146 |
| Countries with the Most Species | 0 | - | 4.99 | 102,916 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,276 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,433 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,591 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,310 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,994 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,370 |
| Countries in the Alps | 0 | - | 4.87 | 117,700 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,139 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,373 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,426 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,994 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,107 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,627 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,290 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,193 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,972 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,557 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,483 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,341 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,930 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,190 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,213 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,199 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,067 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,576 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,535 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,405 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,242 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,003 |
| Largest Countries By Category | 0 | - | 4.97 | 157,648 |
| Countries by Countries | 0 | - | 4.96 | 62,845 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,217 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,164 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,472 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,328 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,223 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,045 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,620 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,137 |
| Island Countries | 0 | - | 4.99 | 709,792 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,104 |
| Northernmost Countries | 0 | - | 4.99 | 360,503 |
| Countries of South America | 0 | - | 5.00 | 922,984 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,122 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,502 |
| "Land" Countries | 0 | - | 4.98 | 335,804 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,488 |
| Top 10 Countries with the Most Time Zones | 0 | - | 4.68 | 155,347 |
| Top 10 Most Protestant European Countries | 0 | - | 4.49 | 36,590 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,815 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,038 |
| Countries with Megacities | 0 | - | 4.99 | 260,303 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,909 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,004 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,184 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,011 |
| Countries by Official Language | 0 | - | 4.95 | 194,647 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,549 |
| Countries in their Native Language | 0 | - | 4.99 | 198,194 |
| Independence from Whom | 0 | - | 4.99 | 211,328 |
| Subdivisions by Country | 0 | - | 4.86 | 50,288 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,719 |
| Megadiverse Countries | 0 | - | 4.96 | 134,770 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,552 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,186 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,759 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,018 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,716 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,385 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,983 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,847 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,490 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,991 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,993 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,721 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,995 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,782 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,157 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,327 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,207 |
| World Map Quiz | 0 | - | 4.81 | 64,530 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,631 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,037 |
| Countries by Founding Story | 0 | - | 4.95 | 77,077 |
| Countries by Road Signs | 0 | - | 4.98 | 53,655 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,515 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,934 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,644 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,340 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,519 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,674 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,836 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,264 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,289 |
| Widest Countries East to West | 0 | - | 4.92 | 129,380 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,385 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,968 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,995 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,513 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,224 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,556 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,236 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,728 |
| Countries with Double Letters | 0 | - | 4.97 | 95,103 |
| Countries that End in N | 0 | - | 4.95 | 170,010 |
| Countries with Five Letters | 0 | - | 4.96 | 280,284 |
| Countries with Six Letters | 0 | - | 4.94 | 212,493 |
| Countries with W | 0 | - | 4.97 | 159,525 |
| Countries with Z | 0 | - | 4.98 | 289,819 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,755 |
| Countries That End in U | 0 | - | 4.95 | 120,416 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,763 |
| Countries that End in O | 0 | - | 4.92 | 159,200 |
| Countries that End in R | 0 | - | 4.87 | 118,735 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,515 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,341 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,115 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,090 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,671 |
| Countries That End in Y | 0 | - | 4.90 | 185,651 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,232 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,433 |
| Countries that End in I | 0 | - | 4.94 | 134,874 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,090 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,581 |
| Countries That End in NIA | 0 | - | 4.92 | 109,520 |
| Countries That End in BIA | 0 | - | 4.93 | 148,849 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,729 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,066 |
| Countries That End in RIA | 0 | - | 4.93 | 126,542 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,639 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,720 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,235 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,596 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,121 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,333 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,690 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,246 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,132 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,200 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,833 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,541 |
| Countries that End in L | 0 | - | 4.94 | 156,542 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,046 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,156 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,840 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,726 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,785 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,790 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,175 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,632 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,135 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,621 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,586 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,960 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,376 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,765 |
| One Border Countries | 0 | - | 4.98 | 467,722 |
| Countries that Eat the Most Fish | 0 | - | 4.26 | 71,774 |
| Top 10 Countries with the Most Fishermen | 0 | - | 4.30 | 45,307 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,822,885 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,615,230 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,562 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,441 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,690 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,378 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,934 |
| Countries by National Anthem | 0 | - | 4.93 | 71,184 |
| NATO Countries | 0 | - | 4.98 | 279,381 |
| EU Countries Quiz | 0 | - | 4.99 | 272,975 |
| Recently Independent Countries | 0 | - | 4.98 | 159,023 |
| French-Speaking Countries | 0 | - | 4.85 | 270,223 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,762 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,595 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,513 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,986 |
| German-Speaking Countries | 0 | - | 4.91 | 145,341 |
