| Independence from Whom | 0 | - | 4.99 | 212,344 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,919 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,664 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,621 |
| Recently Independent Countries | 0 | - | 4.98 | 159,602 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,429 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,031 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,548 |
| Countries by Former Name | 0 | - | 4.99 | 125,473 |
| Historical City to Country | 0 | - | 4.84 | 78,705 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,668,769 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,009 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,607 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,357 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,003 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,388 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,692 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,506 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,846 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,591 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,849 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,169 |
| Landlocked Countries | 0 | - | 4.99 | 423,065 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,786,320 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,996 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,166 |
| Battle to Country | 0 | - | 4.91 | 53,646 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,567 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,861 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,025 |
| Island Countries | 0 | - | 4.99 | 711,440 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,043 |
| Himalayan Countries | 0 | - | 4.95 | 139,198 |
| Andean Countries | 0 | - | 4.93 | 84,885 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,101 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,240 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,681 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,996 |
| Danube Countries | 0 | - | 4.97 | 72,140 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,199 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,547 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,541 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,053 |
| European Landlocked Countries | 0 | - | 4.99 | 147,284 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,844 |
| Countries with the Most Species | 0 | - | 4.99 | 103,352 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,970 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,648 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,768 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,622 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,371 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,792 |
| Countries in the Alps | 0 | - | 4.87 | 118,372 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,780 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,299 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,760 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,723 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,645 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,044 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,820 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,611 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,251 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,958 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,723 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,596 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,331 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,569 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,640 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,171 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,405 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,791 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,256 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,526 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,439 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,315 |
| Largest Countries By Category | 0 | - | 4.97 | 158,410 |
| Countries by Countries | 0 | - | 4.96 | 63,364 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,398 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,855 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,328 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,592 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,795 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,245 |
| Northernmost Countries | 0 | - | 4.99 | 362,516 |
| Countries of South America | 0 | - | 5.00 | 928,877 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,805 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,731 |
| "Land" Countries | 0 | - | 4.98 | 337,643 |
| Countries by Independence Day | 0 | - | 4.62 | 52,804 |
| Former Countries by Capital | 0 | - | 4.45 | 127,661 |
| Former Countries | 0 | - | 4.75 | 134,002 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,414 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,975 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,410 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,218 |
| Countries with Megacities | 0 | - | 4.99 | 265,345 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,044 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,646 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,289 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,720 |
| Countries by Official Language | 0 | - | 4.95 | 195,480 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,686 |
| Countries in their Native Language | 0 | - | 4.99 | 199,253 |
| Subdivisions by Country | 0 | - | 4.87 | 50,485 |
| Megadiverse Countries | 0 | - | 4.96 | 135,099 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,287 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,419 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,297 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,142 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,276 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,418 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,710 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,184 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,919 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,955 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,271 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,015 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,428 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,551 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,555 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,859 |
| World Map Quiz | 0 | - | 4.81 | 65,260 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,853 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,459 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,319 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,416 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,122 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,592 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,017 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,129 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,401 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,497 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,653 |
| Widest Countries East to West | 0 | - | 4.92 | 129,757 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,481 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,517 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,387 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,845 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,704 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,978 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,416 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,822 |
| Countries with Double Letters | 0 | - | 4.96 | 96,490 |
| Countries that End in N | 0 | - | 4.95 | 171,380 |
| Countries with Five Letters | 0 | - | 4.96 | 282,936 |
| Countries with Six Letters | 0 | - | 4.94 | 213,820 |
| Countries with W | 0 | - | 4.96 | 160,516 |
| Countries with Z | 0 | - | 4.98 | 291,740 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,869 |
| Countries That End in U | 0 | - | 4.95 | 120,945 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,642 |
| Countries that End in O | 0 | - | 4.92 | 159,599 |
| Countries that End in R | 0 | - | 4.87 | 119,028 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,792 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,328 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,824 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,583 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,495 |
| Countries That End in Y | 0 | - | 4.91 | 185,946 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,066 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,991 |
| Countries that End in I | 0 | - | 4.94 | 135,172 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,251 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,884 |
| Countries That End in NIA | 0 | - | 4.92 | 109,859 |
| Countries That End in BIA | 0 | - | 4.93 | 149,309 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,221 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,528 |
| Countries That End in RIA | 0 | - | 4.93 | 126,884 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,127 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,902 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,853 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,282 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,833 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,640 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,118 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,470 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,633 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,494 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,419 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,109 |
| Countries that End in L | 0 | - | 4.94 | 156,926 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,288 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,290 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,097 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,025 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,070 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,949 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,811 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,235 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,953 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,612 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,970 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,140 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,737 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,028 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,495 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,838,881 |
| One Border Countries | 0 | - | 4.98 | 470,489 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,638,435 |
