| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,295 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,988 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,781 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,593 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,904 |
| Independence from Whom | 0 | - | 4.99 | 209,787 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,823 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,028 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,102 |
| Countries by Founding Story | 0 | - | 4.95 | 76,579 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,240 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,802,475 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,614 |
| Recently Independent Countries | 0 | - | 4.98 | 158,034 |
| Countries by Former Name | 0 | - | 4.99 | 124,342 |
| Historical City to Country | 0 | - | 4.84 | 78,151 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,948,649 |
| Landlocked Countries | 0 | - | 4.99 | 413,921 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 553,946 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,729 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,760 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,319 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,365 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,335 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,672 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,609 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,866 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,278 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,726 |
| Himalayan Countries | 0 | - | 4.95 | 135,477 |
| Andean Countries | 0 | - | 4.94 | 82,878 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,265 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,279 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,962 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,649 |
| Danube Countries | 0 | - | 4.97 | 71,108 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,807 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,569 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,555 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,461 |
| European Landlocked Countries | 0 | - | 4.99 | 145,792 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,254 |
| Countries with the Most Species | 0 | - | 4.99 | 95,259 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,396 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,879 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,207 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,381 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,974 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,595 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,975 |
| Countries in the Alps | 0 | - | 4.86 | 116,881 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,601 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,317 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,036 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,448 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,213 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,036 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,613 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,782 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,415 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,098 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,205 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,058 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,474 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,784 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,775 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,142 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,683 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,275 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,816 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,483 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,780 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,620 |
| Largest Countries By Category | 0 | - | 4.97 | 156,819 |
| Countries by Countries | 0 | - | 4.96 | 62,291 |
| Pixelated World Map | 0 | - | 5.00 | 142,496 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,448 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,285 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,976 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,585 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,343 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,800 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,145 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,799 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,383 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,500 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,229 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,035 |
| Island Countries | 0 | - | 4.99 | 707,746 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.74 | 45,179 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 32,969 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,936 |
| Northernmost Countries | 0 | - | 4.99 | 357,918 |
| Countries of South America | 0 | - | 5.00 | 915,364 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,269 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,636 |
| "Land" Countries | 0 | - | 4.98 | 333,733 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,649 |
| Countries by Independence Day | 0 | - | 4.56 | 52,622 |
| Former Countries by Capital | 0 | - | 4.45 | 127,073 |
| Former Countries | 0 | - | 4.75 | 132,739 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,252 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,397 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,100 |
| Battle to Country | 0 | - | 4.91 | 52,569 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,017 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,480 |
| Countries with Megacities | 0 | - | 4.99 | 247,314 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,317 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,110 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,741 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,039 |
| Countries by Official Language | 0 | - | 4.95 | 192,839 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,214 |
| Countries in their Native Language | 0 | - | 4.99 | 196,702 |
| Subdivisions by Country | 0 | - | 4.86 | 50,084 |
| Megadiverse Countries | 0 | - | 4.97 | 133,929 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,871 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,934 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,441 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,868 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,709 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,177 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,229 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,654 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,442 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,517 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,520 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,707 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,039 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,674 |
| World Map Quiz | 0 | - | 4.81 | 63,547 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,874 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,365 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,177 |
| Countries by Road Signs | 0 | - | 4.98 | 53,131 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,426 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,057 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,984 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,864 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,903 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,099 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,307 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,961 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,361 |
| Widest Countries East to West | 0 | - | 4.92 | 128,637 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,220 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,270 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,587 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,715 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,665 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,086 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,057 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,594 |
| Countries With the Tallest People | 0 | - | 4.91 | 94,535 |
| Countries with Double Letters | 0 | - | 4.96 | 93,445 |
| Countries that End in N | 0 | - | 4.94 | 156,951 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,758 |
| Countries with Six Letters | 0 | - | 4.93 | 210,421 |
| Countries with W | 0 | - | 4.97 | 158,273 |
| Countries with Z | 0 | - | 4.98 | 287,951 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,598 |
| Countries That End in U | 0 | - | 4.95 | 119,540 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,644 |
| Countries that End in O | 0 | - | 4.92 | 158,578 |
| Countries that End in R | 0 | - | 4.87 | 118,294 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,870 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,149 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,377 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,529 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,069 |
| Countries That End in Y | 0 | - | 4.90 | 185,223 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,430 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,727 |
| Countries that End in I | 0 | - | 4.94 | 134,447 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,262 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,220 |
| Countries That End in NIA | 0 | - | 4.92 | 109,031 |
| Countries That End in BIA | 0 | - | 4.92 | 147,741 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,110 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,516 |
| Countries That End in RIA | 0 | - | 4.93 | 126,108 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,042 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,257 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,548 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,918 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,400 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,951 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,154 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,681 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,542 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,827 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,189 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,856 |
| Countries that End in L | 0 | - | 4.94 | 155,771 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,420 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,997 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,538 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,332 |
