| Countries of the World in 1444 | 0 | - | 4.98 | 59,528 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,872 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,196 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,499 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,157 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,857 |
| Independence from Whom | 0 | - | 4.99 | 209,683 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,743 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,997 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,006 |
| Countries by Founding Story | 0 | - | 4.95 | 76,534 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,801,017 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,948 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,587,917 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.74 | 45,148 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 32,940 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,917,383 |
| Recently Independent Countries | 0 | - | 4.98 | 157,983 |
| Countries by Former Name | 0 | - | 4.99 | 124,283 |
| Historical City to Country | 0 | - | 4.84 | 78,125 |
| Landlocked Countries | 0 | - | 4.99 | 413,581 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 552,920 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,702 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,227 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,294 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,270 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,608 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,569 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,810 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,215 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,839 |
| Pixelated World Map | 0 | - | 5.00 | 142,432 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,272 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,436 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,716,396 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,345 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,574 |
| Himalayan Countries | 0 | - | 4.95 | 135,341 |
| Andean Countries | 0 | - | 4.94 | 82,822 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,207 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,199 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,891 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,598 |
| Danube Countries | 0 | - | 4.97 | 71,077 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,757 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,532 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,466 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,386 |
| European Landlocked Countries | 0 | - | 4.99 | 145,748 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,202 |
| Countries with the Most Species | 0 | - | 4.99 | 95,239 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,334 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,197 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,368 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,957 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,572 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,950 |
| Countries in the Alps | 0 | - | 4.86 | 116,819 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,558 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,250 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,001 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,414 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,155 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,999 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,571 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,744 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,275 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,045 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,194 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,041 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,450 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,740 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,749 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,056 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,637 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,252 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,767 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,272 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,667 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,599 |
| Largest Countries By Category | 0 | - | 4.97 | 156,754 |
| Countries by Countries | 0 | - | 4.96 | 62,253 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,379 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,963 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,331 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,671 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,098 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,762 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,900 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,104 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,833 |
| Island Countries | 0 | - | 4.99 | 707,609 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,411 |
| Northernmost Countries | 0 | - | 4.99 | 357,708 |
| Countries of South America | 0 | - | 5.00 | 914,636 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,372 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,213 |
| "Land" Countries | 0 | - | 4.98 | 333,644 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,594 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,238 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,366 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,036 |
| Battle to Country | 0 | - | 4.91 | 52,522 |
| Countries by Independence Day | 0 | - | 4.56 | 52,610 |
| Former Countries by Capital | 0 | - | 4.45 | 127,046 |
| Former Countries | 0 | - | 4.75 | 132,703 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,192 |
| Countries with Megacities | 0 | - | 4.99 | 246,868 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,101 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,957 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,512 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,849 |
| Countries by Official Language | 0 | - | 4.95 | 192,764 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,125 |
| Countries in their Native Language | 0 | - | 4.99 | 196,631 |
| Subdivisions by Country | 0 | - | 4.86 | 50,064 |
| Megadiverse Countries | 0 | - | 4.97 | 133,899 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,796 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,918 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,427 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,858 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,655 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,863 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,141 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,211 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,743 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,563 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,413 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,493 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,502 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,672 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,022 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 100,797 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,578 |
| World Map Quiz | 0 | - | 4.81 | 63,493 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 134,805 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,656 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,326 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,115 |
| Countries by Road Signs | 0 | - | 4.98 | 53,099 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,344 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,983 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,945 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,740 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,849 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,058 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,274 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,941 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,333 |
| Widest Countries East to West | 0 | - | 4.92 | 128,600 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,217 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,205 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,562 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,684 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,627 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,038 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,050 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,581 |
| Countries With the Tallest People | 0 | - | 4.91 | 94,514 |
| Countries with Double Letters | 0 | - | 4.97 | 93,387 |
| Countries that End in N | 0 | - | 4.94 | 156,819 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,680 |
| Countries with Six Letters | 0 | - | 4.93 | 210,358 |
| Countries with W | 0 | - | 4.97 | 158,223 |
| Countries with Z | 0 | - | 4.98 | 287,872 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,547 |
| Countries That End in U | 0 | - | 4.95 | 119,516 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,543 |
| Countries that End in O | 0 | - | 4.92 | 158,551 |
| Countries that End in R | 0 | - | 4.87 | 118,273 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,857 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,017 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,322 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,489 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,009 |
| Countries That End in Y | 0 | - | 4.90 | 185,201 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,368 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,684 |
| Countries that End in I | 0 | - | 4.94 | 134,410 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,190 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,192 |
| Countries That End in NIA | 0 | - | 4.92 | 109,008 |
| Countries That End in BIA | 0 | - | 4.92 | 147,712 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,054 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,480 |
| Countries That End in RIA | 0 | - | 4.93 | 126,079 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,007 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,179 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,518 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,887 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,354 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,927 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,116 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,640 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,507 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,811 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,131 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,807 |
| Countries that End in L | 0 | - | 4.94 | 155,723 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,173 |
