| Countries with Double Letters | 0 | - | 4.96 | 67,363 |
| Countries that End in N | 0 | - | 4.93 | 131,817 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 228,564 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 186,099 |
| Countries with W | 0 | - | 4.97 | 122,017 |
| Countries with Z | 0 | - | 4.98 | 243,243 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,912 |
| Countries That End in U | 0 | - | 4.94 | 107,194 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,658 |
| Countries that End in O | 0 | - | 4.92 | 146,570 |
| Countries that End in R | 0 | - | 4.86 | 96,242 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,992 |
| Countries Ending in "IA" | 0 | - | 4.99 | 170,347 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,112 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,780 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 128,735 |
| Countries That End in Y | 0 | - | 4.90 | 161,372 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,092 |
| Countries that End in I | 0 | - | 4.92 | 114,261 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,748 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,960 |
| Countries That End in NIA | 0 | - | 4.93 | 100,474 |
| Countries That End in BIA | 0 | - | 4.91 | 125,542 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,599 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,241 |
| Countries That End in RIA | 0 | - | 4.89 | 100,599 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,934 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 199,261 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,947 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 109,783 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,643 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,717 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,154 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,515 |
| Countries with the Word "And" | 0 | - | 4.98 | 82,834 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,015 |
| Countries that End in L | 0 | - | 4.95 | 133,553 |
| "Land" Countries | 0 | - | 4.98 | 288,265 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,052 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,102 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,371 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 319,202 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,586,425 |
| Countries with Four Letters | 0 | - | 4.99 | 374,721 |
| Countries on the Equator | 0 | - | 4.83 | 133,491 |
| Members of the Arab League | 0 | - | 4.83 | 59,946 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,603 |
| Himalayan Countries | 0 | - | 4.95 | 103,007 |
| Andean Countries | 0 | - | 4.90 | 57,254 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 58,090 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,695 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,057 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,662 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,866 |
| Danube Countries | 0 | - | 4.97 | 56,424 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,459 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,654 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,573 |
| Countries with the Worst Passports | 0 | - | 4.87 | 48,927 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,581 |
| European Landlocked Countries | 0 | - | 4.99 | 114,911 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,913 |
| Countries with the Most Species | 0 | - | 4.99 | 89,123 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,974 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,511 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,862 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,879 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,191 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,518 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,799 |
| Countries in the Alps | 0 | - | 4.83 | 102,038 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,827 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,128 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,231 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,863 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,526 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,186 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,202 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,856 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,122 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,292 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,030 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,394 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,481 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,100 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,610 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,106 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,947 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,050 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,061 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 193,783 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,812 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,043 |
| Largest Countries By Category | 0 | - | 4.96 | 144,129 |
| Countries by Countries | 0 | - | 4.96 | 54,232 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,032,798 |
| Country Flags with the Most White | 0 | - | 4.92 | 119,936 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,457 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,571 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 116,092 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 178,718 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 339,140 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 352,712 |
| Island Countries Quiz | 0 | - | 4.99 | 639,843 |
| Biggest Countries by Area | 0 | - | 5.00 | 926,940 |
| Northernmost Countries | 0 | - | 4.99 | 325,778 |
| Countries of South America | 0 | - | 5.00 | 785,994 |
| Countries of Oceania | 0 | - | 5.00 | 885,040 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,120,273 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,557,246 |
| Countries with J | 0 | - | 4.56 | 170,617 |
| Add A Letter - Make a Country | 0 | - | 4.79 | 67,768 |
| Countries by Consonants | 0 | - | 4.44 | 72,551 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,548 |
| Countries with Megacities | 0 | - | 4.99 | 195,320 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,975 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,108 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 94,047 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,964 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,809 |
| Countries by Official Language | 0 | - | 4.95 | 153,790 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 247,348 |
| Countries in their Native Language | 0 | - | 4.98 | 177,283 |
| Independence from Whom | 0 | - | 4.99 | 184,217 |
| Subdivisions by Country | 0 | - | 4.82 | 46,259 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,586 |
| Megadiverse Countries | 0 | - | 4.96 | 124,908 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,290 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,134 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,184 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,308 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,857 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,145 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,438 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,623 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,159 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,221 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,931 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,628 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,550 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,165 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,875 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,719 |
| World Map Quiz | 0 | - | 4.90 | 48,382 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 111,360 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,947 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,682 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,314 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,296 |
| Countries With the Most Languages | 0 | - | 4.90 | 172,077 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 86,715 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 71,054 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,695 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,445 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,999 |
| Widest Countries East to West | 0 | - | 4.93 | 118,871 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,726 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,134 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,189 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,955 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,304 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,702 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,314 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,916 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,912 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,883 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,233 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,743 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 163,267 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,926 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 131,954 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,432 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,247 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,587 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,774 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,015 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,699 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,304,724 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,996 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,042,798 |
| One Border Countries | 0 | - | 4.98 | 407,334 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 92,618 |
| Most Similar Country Names | 0 | - | 4.15 | 43,490 |
| Longest Country Name A-Z | 0 | - | 4.36 | 36,665 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,367,197 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,569 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,876 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,430 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,597 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,601 |
| Countries by National Anthem | 0 | - | 4.94 | 61,698 |
| NATO Countries Quiz | 0 | - | 4.98 | 224,176 |
| EU Countries Quiz | 0 | - | 4.99 | 226,595 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,910 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,272 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,819 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 224,791 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 216,450 |
| German-Speaking Countries | 0 | - | 4.88 | 117,239 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,444 |
