| Countries by Former Name | 0 | - | 4.99 | 124,349 |
| Independence from Whom | 0 | - | 4.99 | 209,804 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,836 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,032 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,115 |
| Countries by Founding Story | 0 | - | 4.95 | 76,584 |
| Cities by Former Name | 0 | - | 4.84 | 91,027 |
| Recently Independent Countries | 0 | - | 4.98 | 158,043 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,593 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,313 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,011 |
| Historical City to Country | 0 | - | 4.84 | 78,157 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,953,896 |
| Landlocked Countries | 0 | - | 4.99 | 413,993 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,720,394 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,333 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,375 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,338 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,678 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,620 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,870 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,288 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,757 |
| Himalayan Countries | 0 | - | 4.95 | 135,496 |
| Andean Countries | 0 | - | 4.94 | 82,891 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,278 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,293 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,971 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,655 |
| Danube Countries | 0 | - | 4.97 | 71,118 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,817 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,579 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,566 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,475 |
| European Landlocked Countries | 0 | - | 4.99 | 145,801 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,268 |
| Countries with the Most Species | 0 | - | 4.99 | 95,263 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,409 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,884 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,212 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,384 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,978 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,601 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,980 |
| Countries in the Alps | 0 | - | 4.86 | 116,899 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,611 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,337 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,040 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,460 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,222 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,043 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,621 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,788 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,449 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,104 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,206 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,065 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,481 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,790 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,783 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,155 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,685 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,278 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,829 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,518 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,811 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,624 |
| Largest Countries By Category | 0 | - | 4.97 | 156,835 |
| Countries by Countries | 0 | - | 4.96 | 62,299 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,464 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,287 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,977 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,609 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,344 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,789 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,908 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,821 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,154 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,810 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,560 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,266 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,080 |
| Island Countries | 0 | - | 4.99 | 707,772 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,034 |
| Northernmost Countries | 0 | - | 4.99 | 357,958 |
| Countries of South America | 0 | - | 5.00 | 915,502 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,491 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,882 |
| "Land" Countries | 0 | - | 4.98 | 333,751 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,653 |
| Countries by Independence Day | 0 | - | 4.56 | 52,624 |
| Former Countries by Capital | 0 | - | 4.45 | 127,076 |
| Former Countries | 0 | - | 4.75 | 132,748 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,431 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,118 |
| Battle to Country | 0 | - | 4.91 | 52,576 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,248 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,514 |
| Countries with Megacities | 0 | - | 4.99 | 247,359 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,338 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,128 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,763 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,045 |
| Countries by Official Language | 0 | - | 4.95 | 192,858 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,245 |
| Countries in their Native Language | 0 | - | 4.99 | 196,718 |
| Subdivisions by Country | 0 | - | 4.86 | 50,086 |
| Megadiverse Countries | 0 | - | 4.97 | 133,938 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,887 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,937 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,447 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,870 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,719 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,188 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,230 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,754 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,670 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,444 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,524 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,522 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,708 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,041 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,687 |
| World Map Quiz | 0 | - | 4.81 | 63,561 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,914 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,375 |
| Countries by Road Signs | 0 | - | 4.98 | 53,145 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,446 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,127 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,994 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,884 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,911 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,102 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,313 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,967 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,365 |
| Widest Countries East to West | 0 | - | 4.92 | 128,640 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,221 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,276 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,589 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,720 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,672 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,098 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,060 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,596 |
| Countries with Double Letters | 0 | - | 4.96 | 93,457 |
| Countries that End in N | 0 | - | 4.94 | 156,960 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,767 |
| Countries with Six Letters | 0 | - | 4.93 | 210,430 |
| Countries with W | 0 | - | 4.97 | 158,279 |
| Countries with Z | 0 | - | 4.98 | 287,966 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,606 |
| Countries That End in U | 0 | - | 4.95 | 119,541 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,657 |
| Countries that End in O | 0 | - | 4.92 | 158,582 |
| Countries that End in R | 0 | - | 4.87 | 118,298 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,873 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,160 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,388 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,535 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,075 |
| Countries That End in Y | 0 | - | 4.90 | 185,226 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,445 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,740 |
| Countries that End in I | 0 | - | 4.94 | 134,452 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,271 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,227 |
| Countries That End in NIA | 0 | - | 4.92 | 109,040 |
| Countries That End in BIA | 0 | - | 4.92 | 147,746 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,122 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,522 |
| Countries That End in RIA | 0 | - | 4.93 | 126,113 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,044 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,271 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,551 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,928 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,409 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,952 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,161 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,687 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,549 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,832 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,195 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,862 |
| Countries that End in L | 0 | - | 4.94 | 155,780 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,457 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,997 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,541 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,335 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,460 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,318 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,239 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 131,750 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,315 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,558 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,638 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,676 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,182 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,434 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,350 |
