| Independence from Whom | 0 | - | 4.99 | 209,894 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,894 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,055 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,181 |
| Countries by Founding Story | 0 | - | 4.95 | 76,613 |
| Recently Independent Countries | 0 | - | 4.98 | 158,082 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,656 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,384 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,119 |
| Countries by Former Name | 0 | - | 4.99 | 124,401 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,982,139 |
| Landlocked Countries | 0 | - | 4.99 | 414,379 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,723,007 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,399 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,419 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,365 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,709 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,645 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,900 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,323 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,902 |
| Himalayan Countries | 0 | - | 4.95 | 135,626 |
| Andean Countries | 0 | - | 4.94 | 82,971 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,335 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,381 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,037 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,715 |
| Danube Countries | 0 | - | 4.97 | 71,154 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,859 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,614 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,645 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,554 |
| European Landlocked Countries | 0 | - | 4.99 | 145,855 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,319 |
| Countries with the Most Species | 0 | - | 4.99 | 95,288 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,474 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,921 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,225 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,396 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,002 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,640 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,008 |
| Countries in the Alps | 0 | - | 4.86 | 116,949 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,656 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,404 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,078 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,485 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,266 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,070 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,669 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,822 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,551 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,129 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,223 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,088 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,512 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,807 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,806 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,226 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,721 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,299 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,873 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,698 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,923 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,665 |
| Largest Countries By Category | 0 | - | 4.97 | 156,884 |
| Countries by Countries | 0 | - | 4.96 | 62,336 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,523 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,298 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,992 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,771 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,351 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,826 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,939 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,191 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,843 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,895 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,402 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,215 |
| Island Countries | 0 | - | 4.99 | 707,911 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,496 |
| Northernmost Countries | 0 | - | 4.99 | 358,135 |
| Countries of South America | 0 | - | 5.00 | 916,081 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,185 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,973 |
| "Land" Countries | 0 | - | 4.98 | 333,858 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,689 |
| Countries by Independence Day | 0 | - | 4.56 | 52,630 |
| Former Countries by Capital | 0 | - | 4.45 | 127,098 |
| Former Countries | 0 | - | 4.75 | 132,772 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,477 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,174 |
| Battle to Country | 0 | - | 4.91 | 52,599 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,276 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,629 |
| Countries with Megacities | 0 | - | 4.99 | 247,574 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,467 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,206 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,881 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,131 |
| Countries by Official Language | 0 | - | 4.95 | 192,937 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,357 |
| Countries in their Native Language | 0 | - | 4.99 | 196,788 |
| Subdivisions by Country | 0 | - | 4.86 | 50,103 |
| Megadiverse Countries | 0 | - | 4.97 | 133,964 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,952 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,954 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,465 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,877 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,758 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,219 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,250 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,761 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,736 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,455 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,549 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,536 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,729 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,061 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,808 |
| World Map Quiz | 0 | - | 4.81 | 63,642 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,124 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,412 |
| Countries by Road Signs | 0 | - | 4.98 | 53,186 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,542 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,322 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,064 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,000 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,981 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,167 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,375 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,001 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,417 |
| Widest Countries East to West | 0 | - | 4.92 | 128,874 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,245 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,329 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,603 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,751 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,700 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,123 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 72,426 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,612 |
| Countries with Double Letters | 0 | - | 4.96 | 93,536 |
| Countries that End in N | 0 | - | 4.94 | 157,024 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,845 |
| Countries with Six Letters | 0 | - | 4.93 | 210,519 |
| Countries with W | 0 | - | 4.97 | 158,325 |
| Countries with Z | 0 | - | 4.98 | 288,054 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,644 |
| Countries That End in U | 0 | - | 4.95 | 119,570 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,724 |
| Countries that End in O | 0 | - | 4.92 | 158,603 |
| Countries that End in R | 0 | - | 4.87 | 118,324 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,888 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,248 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,439 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,567 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,110 |
| Countries That End in Y | 0 | - | 4.90 | 185,246 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,491 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,792 |
| Countries that End in I | 0 | - | 4.94 | 134,484 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,321 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,243 |
| Countries That End in NIA | 0 | - | 4.92 | 109,061 |
| Countries That End in BIA | 0 | - | 4.92 | 147,776 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,158 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,563 |
| Countries That End in RIA | 0 | - | 4.93 | 126,137 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,095 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,451 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,589 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,958 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,449 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,966 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,195 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,718 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,583 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,851 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,227 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,894 |
| Countries that End in L | 0 | - | 4.94 | 156,038 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,648 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,005 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,561 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,356 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,473 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,611 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,425 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 139,341 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,482 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,824 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,799 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,755 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,203 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,438 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,364 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,349 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,958 |
| One Border Countries | 0 | - | 4.98 | 464,929 |
