| Independence from Whom | 0 | - | 4.99 | 210,865 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,385 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,244 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,639 |
| Countries by Founding Story | 0 | - | 4.95 | 76,902 |
| Recently Independent Countries | 0 | - | 4.98 | 158,418 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,203 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,196 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,893 |
| Countries by Former Name | 0 | - | 4.99 | 124,705 |
| Historical City to Country | 0 | - | 4.84 | 78,339 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,183,156 |
| Landlocked Countries | 0 | - | 4.99 | 416,919 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,742,447 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,934 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,804 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,719 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 88,332 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,902 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,157 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,717 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,050 |
| Himalayan Countries | 0 | - | 4.95 | 136,608 |
| Andean Countries | 0 | - | 4.95 | 83,543 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,795 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,082 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,469 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,062 |
| Danube Countries | 0 | - | 4.97 | 71,456 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,266 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,867 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,213 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,200 |
| European Landlocked Countries | 0 | - | 4.99 | 146,159 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,815 |
| Countries with the Most Species | 0 | - | 4.99 | 102,083 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,943 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,121 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,343 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,522 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,180 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,828 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,208 |
| Countries in the Alps | 0 | - | 4.86 | 117,369 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,926 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,954 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,274 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,767 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,862 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,276 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,013 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,009 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,829 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,367 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,376 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,215 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,749 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,022 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,026 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,765 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,916 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,444 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,270 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,143 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,638 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,844 |
| Largest Countries By Category | 0 | - | 4.97 | 157,302 |
| Countries by Countries | 0 | - | 4.96 | 62,618 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,909 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,376 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,089 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,393 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,414 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,212 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,146 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,830 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,423 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,113 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,149 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,920 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,955 |
| Island Countries | 0 | - | 4.99 | 708,904 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,636 |
| Northernmost Countries | 0 | - | 4.99 | 359,487 |
| Countries of South America | 0 | - | 5.00 | 920,010 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,433 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,584 |
| "Land" Countries | 0 | - | 4.98 | 334,707 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,254 |
| Countries by Independence Day | 0 | - | 4.61 | 52,678 |
| Former Countries by Capital | 0 | - | 4.45 | 127,264 |
| Former Countries | 0 | - | 4.75 | 132,998 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,121 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,443 |
| Battle to Country | 0 | - | 4.91 | 52,949 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,487 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,385 |
| Countries with Megacities | 0 | - | 4.99 | 249,154 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,242 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,604 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,565 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,570 |
| Countries by Official Language | 0 | - | 4.95 | 194,068 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,814 |
| Countries in their Native Language | 0 | - | 4.99 | 197,680 |
| Subdivisions by Country | 0 | - | 4.86 | 50,211 |
| Megadiverse Countries | 0 | - | 4.96 | 134,565 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,887 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,087 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,641 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,954 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,467 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,569 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,386 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,811 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,319 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,593 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,697 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,660 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,873 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,219 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,642 |
| World Map Quiz | 0 | - | 4.81 | 64,137 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,526 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,729 |
| Countries by Road Signs | 0 | - | 4.98 | 53,445 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,095 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,690 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,423 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,762 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,297 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,485 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,650 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,157 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,655 |
| Widest Countries East to West | 0 | - | 4.92 | 129,162 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,333 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,691 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,933 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,969 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,997 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,383 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,123 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,681 |
| Countries with Double Letters | 0 | - | 4.96 | 94,210 |
| Countries that End in N | 0 | - | 4.95 | 167,258 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,673 |
| Countries with Six Letters | 0 | - | 4.93 | 211,209 |
| Countries with W | 0 | - | 4.97 | 158,889 |
| Countries with Z | 0 | - | 4.98 | 288,867 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,098 |
| Countries That End in U | 0 | - | 4.95 | 119,972 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,210 |
| Countries that End in O | 0 | - | 4.92 | 158,900 |
| Countries that End in R | 0 | - | 4.87 | 118,535 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,305 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,810 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,781 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,836 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,411 |
| Countries That End in Y | 0 | - | 4.90 | 185,450 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,880 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,116 |
| Countries that End in I | 0 | - | 4.94 | 134,692 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,733 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,424 |
| Countries That End in NIA | 0 | - | 4.92 | 109,311 |
| Countries That End in BIA | 0 | - | 4.93 | 148,597 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,452 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,794 |
| Countries That End in RIA | 0 | - | 4.93 | 126,358 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,361 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,139 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,890 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,225 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,818 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,163 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,468 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,971 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,868 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,031 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,547 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,237 |
| Countries that End in L | 0 | - | 4.94 | 156,312 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,008 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,074 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,720 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,581 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,632 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,366 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,828 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,371 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,853 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,283 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,057 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,879 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,300 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,530 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,531 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,307 |
