| Countries with Double Letters | 0 | - | 4.96 | 79,867 |
| Countries that End in N | 0 | - | 4.93 | 144,115 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 242,923 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,321 |
| Countries with W | 0 | - | 4.97 | 131,808 |
| Countries with Z | 0 | - | 4.98 | 273,429 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,111 |
| Countries That End in U | 0 | - | 4.95 | 113,193 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 98,603 |
| Countries that End in O | 0 | - | 4.92 | 152,894 |
| Countries that End in R | 0 | - | 4.84 | 99,377 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,020 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,161 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,200 |
| Countries by Last Two Letters | 0 | - | 4.89 | 120,977 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,493 |
| Countries That End in Y | 0 | - | 4.91 | 181,143 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 187,627 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,454 |
| Countries that End in I | 0 | - | 4.92 | 116,955 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,085 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,455 |
| Countries That End in NIA | 0 | - | 4.92 | 104,467 |
| Countries That End in BIA | 0 | - | 4.92 | 141,503 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 160,008 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 113,903 |
| Countries That End in RIA | 0 | - | 4.89 | 104,827 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 104,976 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 212,853 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 125,985 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 117,657 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 83,662 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 70,655 |
| Countries With One Word and Three A's | 0 | - | 4.93 | 47,782 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 96,853 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 118,987 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,681 |
| Countries with the Word "And" | 0 | - | 4.98 | 88,814 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,581 |
| Countries that End in L | 0 | - | 4.94 | 150,930 |
| "Land" Countries | 0 | - | 4.98 | 298,324 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 195,695 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,713 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 373,754 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,639,744 |
| Countries with Four Letters | 0 | - | 4.99 | 384,848 |
| Sahara Desert Countries | 0 | - | 4.98 | 141,415 |
| Himalayan Countries | 0 | - | 4.95 | 118,533 |
| Andean Countries | 0 | - | 4.92 | 66,403 |
| Countries with the Oldest Median Age | 0 | - | 4.83 | 67,481 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,069 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,313 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,146 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 57,828 |
| Danube Countries | 0 | - | 4.97 | 59,840 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,531 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 80,905 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,240 |
| Countries with the Worst Passports | 0 | - | 4.91 | 60,543 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 134,341 |
| European Landlocked Countries | 0 | - | 4.99 | 139,790 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,322 |
| Countries with the Most Species | 0 | - | 4.99 | 91,693 |
| Countries 197 to 205 | 0 | - | 4.87 | 61,797 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,289 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,408 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,727 |
| Countries that Use the Peso | 0 | - | 4.83 | 48,878 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,320 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,754 |
| Countries in the Alps | 0 | - | 4.86 | 108,632 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,678 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 95,824 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,619 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,536 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,452 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,097 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 93,958 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,037 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,370 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 57,948 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,107 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,706 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 38,576 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,347 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,054 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,690 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 106,981 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,123 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,070 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 217,889 |
| World Countries - Blind Typing | 0 | - | 5.00 | 82,626 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 44,423 |
| Largest Countries By Category | 0 | - | 4.97 | 149,984 |
| Countries by Countries | 0 | - | 4.96 | 57,730 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,334,731 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,180 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,324 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,014 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 82,833 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,407,814 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 120,783 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 196,275 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 356,746 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 377,656 |
| Island Countries Quiz | 0 | - | 4.99 | 685,489 |
| Biggest Countries by Area | 0 | - | 5.00 | 979,417 |
| Northernmost Countries | 0 | - | 4.99 | 339,889 |
| Countries of South America | 0 | - | 5.00 | 848,562 |
| Countries of Oceania | 0 | - | 5.00 | 959,288 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,698,114 |
| Countries with J | 0 | - | 4.55 | 177,899 |
| Countries by Consonants | 0 | - | 4.43 | 75,595 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,225,707 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 155,272 |
| Countries with Megacities | 0 | - | 4.99 | 213,941 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,153 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 104,845 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 105,343 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 71,554 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 266,072 |
| Countries by Official Language | 0 | - | 4.95 | 182,025 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 279,005 |
| Countries in their Native Language | 0 | - | 4.98 | 186,983 |
| Independence from Whom | 0 | - | 4.99 | 197,394 |
| Subdivisions by Country | 0 | - | 4.86 | 48,151 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 121,854 |
| Megadiverse Countries | 0 | - | 4.96 | 129,803 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 119,092 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,145 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,078 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 153,933 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,806 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 84,871 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,305 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,564 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,092 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 64,626 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,131 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,292 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,650 |
| Straight Shot to the Arctic Circle | 0 | - | 4.90 | 71,543 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 67,934 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 95,537 |
| World Map Quiz | 0 | - | 4.88 | 56,225 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 131,040 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,750 |
| Countries by Founding Story | 0 | - | 4.94 | 71,764 |
| Countries by Road Signs | 0 | - | 4.98 | 48,736 |
| Southernmost Countries of the World | 0 | - | 4.99 | 216,538 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,431 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 114,915 |
| Countries With the Most Languages | 0 | - | 4.88 | 186,734 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,779 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,457 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,175 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,642 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,770 |
| Widest Countries East to West | 0 | - | 4.92 | 123,683 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,933 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,254 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,027 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,521 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 123,998 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,503 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,752 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,295 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,124 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,026 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,774 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 217,622 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,182 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 121,402 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,396 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,211 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,103 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,392 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,370 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,551 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,253 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,369,189 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 361,940 |
| One Border Countries | 0 | - | 4.97 | 429,098 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 96,439 |
| Most Similar Country Names | 0 | - | 4.15 | 44,962 |
| Longest Country Name A-Z | 0 | - | 4.36 | 39,471 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,593,470 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 80,816 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 255,315 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 114,680 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 106,958 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 86,944 |
| Countries by Population Range - Tile Select | 0 | - | 4.85 | 54,119 |
| Countries by National Anthem | 0 | - | 4.93 | 69,571 |
| NATO Countries Quiz | 0 | - | 4.98 | 255,200 |
| EU Countries Quiz | 0 | - | 4.99 | 248,422 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 150,743 |
| French-Speaking Countries | 0 | - | 4.85 | 253,523 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 80,110 |
| Countries That Use the Euro | 0 | - | 4.92 | 73,355 |
