| Independence from Whom | 0 | - | 4.99 | 212,651 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,142 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,718 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,822 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,332 |
| Recently Independent Countries | 0 | - | 4.98 | 159,746 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,660 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,327 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,794 |
| Countries by Former Name | 0 | - | 4.99 | 125,612 |
| Historical City to Country | 0 | - | 4.85 | 78,782 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,752,754 |
| Landlocked Countries | 0 | - | 4.99 | 424,092 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,759 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,168 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,729 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,413 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,094 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,436 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,752 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,611 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,458 |
| Himalayan Countries | 0 | - | 4.94 | 139,627 |
| Andean Countries | 0 | - | 4.94 | 85,109 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,296 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,530 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,864 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,155 |
| Danube Countries | 0 | - | 4.97 | 72,235 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,359 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,658 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,773 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,260 |
| European Landlocked Countries | 0 | - | 4.99 | 147,410 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,019 |
| Countries with the Most Species | 0 | - | 4.99 | 103,446 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,148 |
| Countries Settled by Vikings | 0 | - | 4.92 | 121,929 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,692 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,803 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,716 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,447 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,867 |
| Countries in the Alps | 0 | - | 4.87 | 118,516 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,169 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,506 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,829 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,838 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,762 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,107 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,623 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,953 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,697 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,318 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,032 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,775 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,639 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,409 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,652 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,742 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,421 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,489 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,372 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,427 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,027 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,728 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,401 |
| Largest Countries By Category | 0 | - | 4.97 | 158,581 |
| Countries by Countries | 0 | - | 4.96 | 63,466 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,037 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,625 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,356 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,071 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,355 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,938 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,975 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,976 |
| Every Country Shape | 0 | - | 5.00 | 469,589 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,521 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,189 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,694 |
| Island Countries | 0 | - | 4.99 | 711,886 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,801 |
| Northernmost Countries | 0 | - | 4.99 | 363,225 |
| Countries of South America | 0 | - | 5.00 | 930,306 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,716 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,208 |
| "Land" Countries | 0 | - | 4.98 | 337,952 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,821 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,106 |
| Countries by Independence Day | 0 | - | 4.62 | 52,834 |
| Former Countries by Capital | 0 | - | 4.45 | 127,734 |
| Former Countries | 0 | - | 4.77 | 134,086 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,268 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 139,104 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,512 |
| Battle to Country | 0 | - | 4.91 | 53,758 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,863 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,442 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 164,912 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 39,381 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 33,510 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 104,937 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 111,955 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 122,615 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,748 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 81,002 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,515 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 86,222 |
| Cartoon Versions of Countries | 0 | - | 4.99 | 95,625 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,542 |
| Countries with Megacities | 0 | - | 4.99 | 266,039 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,325 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,785 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,587 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,909 |
| Countries by Official Language | 0 | - | 4.95 | 195,694 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,195 |
| Countries in their Native Language | 0 | - | 4.99 | 199,468 |
| Subdivisions by Country | 0 | - | 4.87 | 50,544 |
| Megadiverse Countries | 0 | - | 4.96 | 135,167 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,530 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,466 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,363 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,169 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,397 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,479 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,759 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,215 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,127 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,280 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,347 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,071 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,489 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,613 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,913 |
| World Map Quiz | 0 | - | 4.81 | 65,403 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,416 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,544 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,901 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,786 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,390 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,091 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,234 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,368 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,563 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,603 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,653 |
| Widest Countries East to West | 0 | - | 4.92 | 130,262 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,546 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,053 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,449 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,951 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,827 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,322 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,455 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,859 |
| Countries with Double Letters | 0 | - | 4.96 | 96,735 |
| Countries that End in N | 0 | - | 4.95 | 171,618 |
| Countries with Five Letters | 0 | - | 4.96 | 283,286 |
| Countries with Six Letters | 0 | - | 4.94 | 214,072 |
| Countries with W | 0 | - | 4.96 | 160,689 |
| Countries with Z | 0 | - | 4.98 | 292,036 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,048 |
| Countries That End in U | 0 | - | 4.95 | 121,049 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,836 |
| Countries that End in O | 0 | - | 4.92 | 159,688 |
| Countries that End in R | 0 | - | 4.87 | 119,087 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,843 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,517 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,967 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,679 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,600 |
| Countries That End in Y | 0 | - | 4.91 | 186,011 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,229 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,101 |
| Countries that End in I | 0 | - | 4.94 | 135,227 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,417 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,954 |
| Countries That End in NIA | 0 | - | 4.92 | 109,939 |
| Countries That End in BIA | 0 | - | 4.93 | 149,423 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,361 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,646 |
| Countries That End in RIA | 0 | - | 4.93 | 126,955 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,242 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,164 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,984 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,419 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,973 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,706 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,212 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,498 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,744 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,560 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,537 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,232 |
| Countries that End in L | 0 | - | 4.94 | 157,008 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,836 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,309 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,165 |
