| Warsaw Pact Countries | 0 | - | 4.83 | 84,429 |
| Recently Independent Countries | 0 | - | 4.98 | 158,897 |
| Independence from Whom | 0 | - | 4.99 | 211,134 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,567 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,315 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,834 |
| Countries by Founding Story | 0 | - | 4.95 | 76,989 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,267,080 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,410 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,525 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,183 |
| Countries by Former Name | 0 | - | 4.99 | 124,834 |
| Historical City to Country | 0 | - | 4.83 | 78,391 |
| Landlocked Countries | 0 | - | 4.99 | 417,997 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,241 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,020 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,013 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,080 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,108 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,374 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,004 |
| Former Capitals | 0 | - | 4.88 | 71,343 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,207 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,632 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,365 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,235 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,750,696 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,525 |
| Himalayan Countries | 0 | - | 4.94 | 137,016 |
| Andean Countries | 0 | - | 4.95 | 83,728 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,976 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,341 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,649 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,222 |
| Danube Countries | 0 | - | 4.97 | 71,560 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,407 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,975 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,474 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,525 |
| European Landlocked Countries | 0 | - | 4.99 | 146,664 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,994 |
| Countries with the Most Species | 0 | - | 4.99 | 102,711 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,128 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,388 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,554 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,246 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,913 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,295 |
| Countries in the Alps | 0 | - | 4.87 | 117,539 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,035 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,186 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,354 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,886 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,989 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,380 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,157 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,108 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,912 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,472 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,431 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,290 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,850 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,115 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,140 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,991 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,992 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,516 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,400 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,816 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,988 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,926 |
| Largest Countries By Category | 0 | - | 4.97 | 157,491 |
| Countries by Countries | 0 | - | 4.96 | 62,752 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,069 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,129 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,450 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.97 | 98,562 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,236 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,122 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,346 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,606 |
| Island Countries | 0 | - | 4.99 | 709,354 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,989 |
| Northernmost Countries | 0 | - | 4.99 | 360,052 |
| Countries of South America | 0 | - | 5.00 | 921,725 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,518 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,461 |
| "Land" Countries | 0 | - | 4.98 | 335,561 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,511 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,603 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,568 |
| Battle to Country | 0 | - | 4.91 | 53,067 |
| Countries by Independence Day | 0 | - | 4.61 | 52,698 |
| Former Countries by Capital | 0 | - | 4.45 | 127,314 |
| Former Countries | 0 | - | 4.75 | 133,085 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,694 |
| Countries with Megacities | 0 | - | 4.99 | 249,803 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 85,897 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,526 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,794 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,860 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,781 |
| Countries by Official Language | 0 | - | 4.95 | 194,459 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,285 |
| Countries in their Native Language | 0 | - | 4.99 | 198,018 |
| Subdivisions by Country | 0 | - | 4.86 | 50,252 |
| Megadiverse Countries | 0 | - | 4.96 | 134,700 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,154 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,146 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,702 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,989 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,605 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,633 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,748 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,448 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,929 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,649 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,661 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,889 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,727 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,061 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,280 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,937 |
| World Map Quiz | 0 | - | 4.81 | 64,382 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,109 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,931 |
| Countries by Road Signs | 0 | - | 4.98 | 53,569 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,314 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,826 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,547 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,072 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,432 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,602 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,748 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,214 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,212 |
| Widest Countries East to West | 0 | - | 4.92 | 129,279 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,367 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,839 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,969 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,447 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,122 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,470 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,195 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,707 |
| Countries with Double Letters | 0 | - | 4.97 | 94,897 |
| Countries that End in N | 0 | - | 4.95 | 169,488 |
| Countries with Five Letters | 0 | - | 4.96 | 278,439 |
| Countries with Six Letters | 0 | - | 4.94 | 212,246 |
| Countries with W | 0 | - | 4.97 | 159,376 |
| Countries with Z | 0 | - | 4.98 | 289,587 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,585 |
| Countries That End in U | 0 | - | 4.95 | 120,338 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,590 |
| Countries that End in O | 0 | - | 4.92 | 159,137 |
| Countries that End in R | 0 | - | 4.87 | 118,676 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,465 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,171 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,001 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,999 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,587 |
| Countries That End in Y | 0 | - | 4.90 | 185,599 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,093 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,310 |
| Countries that End in I | 0 | - | 4.94 | 134,814 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,936 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,528 |
| Countries That End in NIA | 0 | - | 4.92 | 109,447 |
| Countries That End in BIA | 0 | - | 4.93 | 148,751 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,616 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,966 |
| Countries That End in RIA | 0 | - | 4.93 | 126,458 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,550 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,466 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,099 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,437 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,008 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,263 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,593 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,144 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,037 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,148 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,728 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,416 |
| Countries that End in L | 0 | - | 4.94 | 156,468 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,626 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,138 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,787 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,661 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,711 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,578 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,014 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,522 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,988 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,463 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,483 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,912 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,338 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,571 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,599 |
