| Independence from Whom | 0 | - | 4.99 | 209,646 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,719 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,988 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,896 |
| Recently Independent Countries | 0 | - | 4.98 | 157,971 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,470 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,130 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,817 |
| Countries by Former Name | 0 | - | 4.99 | 124,265 |
| Historical City to Country | 0 | - | 4.84 | 78,119 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,906,858 |
| Landlocked Countries | 0 | - | 4.99 | 413,455 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,197 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,270 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,252 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,597 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,553 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,792 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,204 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,829 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,268 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,374 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,704 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,715,303 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,579 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,517 |
| Himalayan Countries | 0 | - | 4.95 | 135,302 |
| Andean Countries | 0 | - | 4.94 | 82,802 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,194 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,160 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,869 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,574 |
| Danube Countries | 0 | - | 4.97 | 71,066 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,736 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,522 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,435 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,358 |
| European Landlocked Countries | 0 | - | 4.99 | 145,734 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,177 |
| Countries with the Most Species | 0 | - | 4.99 | 95,235 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,315 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,195 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,363 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,949 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,562 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,938 |
| Countries in the Alps | 0 | - | 4.86 | 116,793 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,542 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,228 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,993 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,406 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,137 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,982 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,555 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,740 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,201 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,037 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,192 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,034 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,438 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,723 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,740 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,027 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,624 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,248 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,754 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,205 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,623 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,595 |
| Largest Countries By Category | 0 | - | 4.97 | 156,730 |
| Countries by Countries | 0 | - | 4.96 | 62,245 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,022 |
| Battle to Country | 0 | - | 4.91 | 52,505 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,356 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,959 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,748 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,731 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,682 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,067 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,766 |
| Island Countries | 0 | - | 4.99 | 707,556 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,883 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,280 |
| Northernmost Countries | 0 | - | 4.99 | 357,650 |
| Countries of South America | 0 | - | 5.00 | 914,438 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,126 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,823 |
| "Land" Countries | 0 | - | 4.98 | 333,603 |
| Countries by Independence Day | 0 | - | 4.56 | 52,603 |
| Former Countries by Capital | 0 | - | 4.45 | 127,035 |
| Former Countries | 0 | - | 4.75 | 132,685 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,807 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 88,466 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,802 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,561 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,096 |
| Countries with Megacities | 0 | - | 4.99 | 246,727 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,025 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,890 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,448 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,804 |
| Countries by Official Language | 0 | - | 4.95 | 192,740 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,075 |
| Countries in their Native Language | 0 | - | 4.99 | 196,604 |
| Subdivisions by Country | 0 | - | 4.86 | 50,061 |
| Megadiverse Countries | 0 | - | 4.97 | 133,888 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,770 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,912 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,421 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,854 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,633 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,133 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,208 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,738 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,540 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,405 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,482 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,491 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,657 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,013 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,535 |
| World Map Quiz | 0 | - | 4.81 | 63,477 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,575 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,312 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,316 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,972 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,931 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,700 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,838 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,047 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,259 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,934 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,325 |
| Widest Countries East to West | 0 | - | 4.92 | 128,595 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,215 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,189 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,560 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,679 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,615 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,027 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,049 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,575 |
| Countries with Double Letters | 0 | - | 4.97 | 93,353 |
| Countries that End in N | 0 | - | 4.94 | 156,625 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,651 |
| Countries with Six Letters | 0 | - | 4.93 | 210,318 |
| Countries with W | 0 | - | 4.97 | 158,206 |
| Countries with Z | 0 | - | 4.98 | 287,834 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,526 |
| Countries That End in U | 0 | - | 4.95 | 119,506 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,514 |
| Countries that End in O | 0 | - | 4.92 | 158,540 |
| Countries that End in R | 0 | - | 4.87 | 118,262 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,852 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,984 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,305 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,476 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,995 |
| Countries That End in Y | 0 | - | 4.90 | 185,194 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,344 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,659 |
| Countries that End in I | 0 | - | 4.94 | 134,402 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,162 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,182 |
| Countries That End in NIA | 0 | - | 4.92 | 108,994 |
| Countries That End in BIA | 0 | - | 4.92 | 147,697 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,046 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,472 |
| Countries That End in RIA | 0 | - | 4.93 | 126,066 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,986 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,160 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,504 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,881 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,339 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,920 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,103 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,629 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,489 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,808 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,113 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,791 |
| Countries that End in L | 0 | - | 4.94 | 155,709 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,103 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,984 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,501 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,278 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,417 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,843 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,067 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,905 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,166 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,356 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,511 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,607 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,167 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,415 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,307 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,800,465 |
| One Border Countries | 0 | - | 4.98 | 464,288 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,587,078 |
