| Independence from Whom | 0 | - | 4.99 | 185,257 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,236 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,070 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,699 |
| Countries by Founding Story | 0 | - | 4.92 | 54,769 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 39,706 |
| Boundary Waters | 0 | - | 4.93 | 81,035 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 74,608 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 44,521 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 51,091 |
| Cities by Former Name | 0 | - | 4.86 | 71,258 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 144,359 |
| Countries of the World in 1900 | 0 | - | 4.89 | 66,114 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 170,277 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 127,746 |
| Countries by Former Name | 0 | - | 4.99 | 113,703 |
| Historical City to Country | 0 | - | 4.82 | 72,230 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.83 | 30,044 |
| Countries Settled by Vikings | 0 | - | 4.93 | 111,313 |
| Warsaw Pact Countries | 0 | - | 4.84 | 80,115 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 86,835 |
| Countries of the World in 1444 | 0 | - | 4.98 | 49,824 |
| Former Flags | 0 | - | 4.98 | 81,340 |
| Ancient City to Country | 0 | - | 4.76 | 100,820 |
| City-States | 0 | - | 4.53 | 34,759 |
| City Where It Happened #2 | 0 | - | 4.43 | 50,106 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 322,747 |
| Countries by Independence Day Quiz | 0 | - | 4.63 | 44,448 |
| Former Countries by Capital | 0 | - | 4.44 | 103,751 |
| Former Countries | 0 | - | 4.72 | 124,485 |
| Guerrillas by Country | 0 | - | 4.45 | 38,463 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 349,388 |
| People Born on Islands | 0 | - | 4.43 | 40,065 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,843,841 |
| World Geography on a Map #1 | 0 | - | 4.93 | 67,245 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 83,626 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 137,035 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,618 |
| Members of the Arab League | 0 | - | 4.85 | 61,509 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,589 |
| Himalayan Countries | 0 | - | 4.94 | 104,479 |
| Andean Countries | 0 | - | 4.91 | 57,902 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 58,836 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,200 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,531 |
| Coffee Producing Countries | 0 | - | 4.81 | 53,971 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,215 |
| Danube Countries | 0 | - | 4.97 | 56,588 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,615 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,791 |
| Countries with the Best Passports | 0 | - | 4.87 | 71,023 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,239 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,008 |
| European Landlocked Countries | 0 | - | 4.99 | 115,061 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,224 |
| Countries with the Most Species | 0 | - | 4.99 | 89,444 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,256 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,634 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,970 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,175 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,363 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,642 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,061 |
| Countries in the Alps | 0 | - | 4.83 | 102,488 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,180 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,839 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,492 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,142 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,845 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,447 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,517 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,075 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,263 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,560 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,330 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,524 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,613 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,373 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,863 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,362 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,739 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,269 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,310 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 195,575 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,591 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,220 |
| Largest Countries By Category | 0 | - | 4.96 | 144,709 |
| Countries by Countries | 0 | - | 4.96 | 54,539 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 68,826 |
| Battle to Country | 0 | - | 4.92 | 35,316 |
| Country Flags with the Most White | 0 | - | 4.90 | 124,164 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,635 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 44,646 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 61,150 |
| All Countries by Population With a Map | 0 | - | 4.99 | 61,783 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 76,616 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,019 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 134,432 |
| Western Europe Map Quiz | 0 | - | 4.87 | 89,053 |
| Tourist Attraction by Negative Review | 0 | - | 4.90 | 59,593 |
| Who Controls It? #1 | 0 | - | 4.84 | 45,466 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 181,027 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 110,814 |
| Longest International Borders | 0 | - | 4.99 | 233,882 |
| Country Connect by Northernmost Point | 0 | - | 4.97 | 35,857 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 39,929 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 133,479 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 58,580 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.87 | 34,374 |
| Demonym of Every Country | 0 | - | 4.91 | 49,404 |
| Cities by Founder and Date | 0 | - | 4.55 | 27,897 |
| Damaged and Destroyed Cities | 0 | - | 4.39 | 33,168 |
| City Where It Happened #1 | 0 | - | 4.28 | 101,884 |
| World Capitals Quiz | 0 | - | 5.00 | 4,490,990 |
| Countries Unconquered since 1850 | 0 | - | 4.38 | 62,289 |
| Longest Uninterrupted Democracies | 0 | - | 4.07 | 31,644 |
| Most Recent Country To ... | 0 | - | 4.34 | 51,491 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,061,998 |
| Famous Immigrants and Exiles | 0 | - | 4.53 | 19,673 |
| The Same Prefixes - Geography | 0 | - | 4.50 | 41,998 |
| "Second Best" Geography Edition #1 | 0 | - | 4.63 | 58,454 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.79 | 36,007 |
| Countries with Three Borders | 0 | - | 4.96 | 31,340 |
| Roman Provinces on a Map | 0 | - | 4.53 | 31,709 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,380,323 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,596 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 354,804 |
| Island Countries Quiz | 0 | - | 4.99 | 659,677 |
| Biggest Countries by Area | 0 | - | 5.00 | 931,642 |
| Northernmost Countries | 0 | - | 4.99 | 326,786 |
| Countries of South America | 0 | - | 5.00 | 791,491 |
| Countries of Oceania | 0 | - | 5.00 | 891,458 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,143,841 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,568,505 |
| Top World Languages | 0 | - | 4.91 | 706,244 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 93,389 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 99,819 |
| Analogies of Countries #1 | 0 | - | 4.84 | 50,235 |
| Pacific Ocean General Knowledge | 0 | - | 4.59 | 26,748 |
| WWII Geography | 0 | - | 4.81 | 99,267 |
| Largest Deserts in the World | 0 | - | 4.02 | 41,230 |
| Five Letter Geography #4 | 0 | - | 4.84 | 65,661 |
| World Map Divided into Regions | 0 | - | 4.17 | 35,336 |
| Name a Valid Answer - Geography | 0 | - | 4.92 | 76,780 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,575 |
| Countries with Megacities | 0 | - | 4.99 | 196,768 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,162 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,726 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,055 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,686 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,420 |
| Home Cities in History Quiz #1 | 0 | - | 4.16 | 15,968 |
| Global Cities on a World Map | 0 | - | 4.92 | 91,323 |
| Cities Where Famous People Died | 0 | - | 4.46 | 31,353 |
| Northernmost Capital Cities | 0 | - | 4.98 | 93,872 |
| Most Remote Capital Cities | 0 | - | 4.90 | 43,617 |
| Capital Cities: Ports and Saints | 0 | - | 4.94 | 34,254 |
| Capitals with the Shortest Names | 0 | - | 4.96 | 90,613 |
| Same Letter Country and Capital | 0 | - | 4.99 | 127,004 |
| Countries by Capital City | 0 | - | 4.99 | 49,195 |
| Capital Cities Based on First Two Letters | 0 | - | 4.84 | 65,809 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 104,942 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 72,825 |
| Moved Capital Cities | 0 | - | 4.94 | 52,199 |
| Countries by Official Language | 0 | - | 4.95 | 165,936 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 248,734 |
| Countries in their Native Language | 0 | - | 4.98 | 178,008 |
| Subdivisions by Country | 0 | - | 4.82 | 46,390 |
| Megadiverse Countries | 0 | - | 4.96 | 125,221 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,086 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,587 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,329 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,426 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,021 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,975 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,299 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,664 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,517 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,921 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,918 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,466 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,179 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 81,847 |
| World Map Quiz | 0 | - | 4.90 | 49,161 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 112,953 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 81,355 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 51,609 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.80 | 49,418 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.75 | 39,857 |
| Countries by Road Signs | 0 | - | 4.98 | 45,168 |
| Countries That Do Not Border | 0 | - | 4.99 | 47,707 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,465 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,763 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,855 |
| Countries With the Most Languages | 0 | - | 4.90 | 173,255 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,208 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,464 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,150 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,820 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,332 |
