| Countries of the World in 1444 | 0 | - | 4.98 | 59,958 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,178 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,515 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,267 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,311 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,998 |
| Independence from Whom | 0 | - | 4.99 | 210,973 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,447 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,273 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,704 |
| Countries by Founding Story | 0 | - | 4.95 | 76,935 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,816,154 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,640 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,561 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,138 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 33,214 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,212,224 |
| Recently Independent Countries | 0 | - | 4.98 | 158,463 |
| Countries by Former Name | 0 | - | 4.99 | 124,745 |
| Historical City to Country | 0 | - | 4.84 | 78,362 |
| Landlocked Countries | 0 | - | 4.99 | 417,265 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 563,557 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,981 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,061 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,906 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 75,914 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 91,026 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,024 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,297 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,887 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,149 |
| Pixelated World Map | 0 | - | 5.00 | 142,961 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,404 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,482 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,745,250 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,737 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,216 |
| Himalayan Countries | 0 | - | 4.95 | 136,761 |
| Andean Countries | 0 | - | 4.95 | 83,604 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,866 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,166 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,529 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,125 |
| Danube Countries | 0 | - | 4.97 | 71,487 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,304 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,904 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,297 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,297 |
| European Landlocked Countries | 0 | - | 4.99 | 146,196 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,877 |
| Countries with the Most Species | 0 | - | 4.99 | 102,381 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,006 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,355 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,536 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,205 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,857 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,234 |
| Countries in the Alps | 0 | - | 4.86 | 117,433 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,964 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,044 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,305 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,806 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,904 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,322 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,072 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,043 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,861 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,394 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,397 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,240 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,789 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,052 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,063 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,840 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,942 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,467 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,307 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,370 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,751 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,875 |
| Largest Countries By Category | 0 | - | 4.97 | 157,356 |
| Countries by Countries | 0 | - | 4.96 | 62,669 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,956 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,109 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,422 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,958 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,455 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,145 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,551 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,103 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,217 |
| Island Countries | 0 | - | 4.99 | 709,096 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,125 |
| Northernmost Countries | 0 | - | 4.99 | 359,719 |
| Countries of South America | 0 | - | 5.00 | 920,525 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,105 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,914 |
| "Land" Countries | 0 | - | 4.98 | 335,189 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,410 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,041 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,792 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,477 |
| Battle to Country | 0 | - | 4.91 | 52,996 |
| Countries by Independence Day | 0 | - | 4.61 | 52,691 |
| Former Countries by Capital | 0 | - | 4.45 | 127,276 |
| Former Countries | 0 | - | 4.75 | 133,027 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,490 |
| Countries with Megacities | 0 | - | 4.99 | 249,421 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,343 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,670 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,670 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,642 |
| Countries by Official Language | 0 | - | 4.95 | 194,242 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,065 |
| Countries in their Native Language | 0 | - | 4.99 | 197,842 |
| Subdivisions by Country | 0 | - | 4.86 | 50,223 |
| Megadiverse Countries | 0 | - | 4.96 | 134,602 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,003 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,108 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,661 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,964 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,515 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,521 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,597 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,407 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,821 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,474 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,619 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,714 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,685 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,893 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,249 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,181 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,748 |
| World Map Quiz | 0 | - | 4.81 | 64,229 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 136,654 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,711 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,774 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,582 |
| Countries by Road Signs | 0 | - | 4.98 | 53,486 |
| Countries That Do Not Border | 0 | - | 4.99 | 59,820 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,184 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,740 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,474 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,888 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,350 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,523 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,686 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,181 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,119 |
| Widest Countries East to West | 0 | - | 4.92 | 129,219 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,342 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,737 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,946 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,997 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,045 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,420 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,157 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,691 |
| Countries With the Tallest People | 0 | - | 4.91 | 94,714 |
| Countries with Double Letters | 0 | - | 4.96 | 94,589 |
| Countries that End in N | 0 | - | 4.95 | 168,666 |
| Countries with Five Letters | 0 | - | 4.96 | 273,071 |
| Countries with Six Letters | 0 | - | 4.93 | 211,841 |
| Countries with W | 0 | - | 4.97 | 159,164 |
| Countries with Z | 0 | - | 4.98 | 289,248 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,356 |
| Countries That End in U | 0 | - | 4.95 | 120,199 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,387 |
| Countries that End in O | 0 | - | 4.92 | 159,030 |
| Countries that End in R | 0 | - | 4.87 | 118,608 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,385 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,962 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,881 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,910 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,494 |
| Countries That End in Y | 0 | - | 4.90 | 185,518 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,974 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,195 |
| Countries that End in I | 0 | - | 4.94 | 134,733 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,802 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,460 |
| Countries That End in NIA | 0 | - | 4.92 | 109,363 |
| Countries That End in BIA | 0 | - | 4.93 | 148,650 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,514 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,866 |
| Countries That End in RIA | 0 | - | 4.93 | 126,395 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,443 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,248 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,967 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,293 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,922 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,203 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,521 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,048 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,927 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,091 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,624 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,318 |
| Countries that End in L | 0 | - | 4.94 | 156,377 |
