| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,134,826 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 84,800 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,627 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 52,830 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,097,843 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,441,938 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 330,803 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,457,696 |
| Countries of the World in 1900 | 0 | - | 4.87 | 67,727 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 172,518 |
| All Countries by Northernmost Point on Land | 0 | - | 4.90 | 108,054 |
| 20 Countries on an Empty Map #1 | 0 | - | 4.95 | 54,975 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 129,754 |
| Members of the Arab League | 0 | - | 4.85 | 64,926 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,160 |
| Himalayan Countries | 0 | - | 4.94 | 107,136 |
| Andean Countries | 0 | - | 4.91 | 59,605 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,673 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,388 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,771 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,612 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,921 |
| Danube Countries | 0 | - | 4.96 | 57,038 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,051 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,141 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,182 |
| Countries with the Worst Passports | 0 | - | 4.88 | 50,040 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,331 |
| European Landlocked Countries | 0 | - | 4.99 | 136,684 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,446 |
| Countries with the Most Species | 0 | - | 4.99 | 89,741 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,952 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,906 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,205 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,771 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,711 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,977 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,622 |
| Countries in the Alps | 0 | - | 4.84 | 103,427 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,048 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,603 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,024 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,094 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,580 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,065 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,215 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,551 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,568 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,152 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,909 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,862 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,902 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,266 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,415 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,000 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,648 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,727 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,812 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 200,053 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,395 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,639 |
| Largest Countries By Category | 0 | - | 4.97 | 145,906 |
| Countries by Countries | 0 | - | 4.96 | 55,250 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,576 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,037 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 44,976 |
| All Countries by Population With a Map | 0 | - | 4.99 | 63,854 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 77,508 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,084 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,201,074 |
| Pixelated World Map | 0 | - | 5.00 | 129,557 |
| Countries of Europe in 1444 | 0 | - | 4.93 | 88,073 |
| Countries of the World in 1444 | 0 | - | 4.98 | 50,613 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.81 | 50,146 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 70,813 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,406 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,915 |
| Island Countries Quiz | 0 | - | 4.99 | 665,676 |
| Biggest Countries by Area | 0 | - | 5.00 | 941,925 |
| Northernmost Countries | 0 | - | 4.99 | 329,668 |
| Countries of South America | 0 | - | 5.00 | 803,867 |
| Countries of Oceania | 0 | - | 5.00 | 906,068 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,596,871 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,924 |
| Countries with Megacities | 0 | - | 4.99 | 200,245 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,789 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,173 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,288 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,161 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 251,112 |
| Global Cities on a World Map | 0 | - | 4.92 | 92,473 |
| Countries by Official Language | 0 | - | 4.96 | 174,410 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,645 |
| Countries in their Native Language | 0 | - | 4.98 | 179,568 |
| Independence from Whom | 0 | - | 4.99 | 187,886 |
| Subdivisions by Country | 0 | - | 4.82 | 46,736 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,810 |
| Megadiverse Countries | 0 | - | 4.96 | 126,252 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,714 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,236 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,675 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,502 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,592 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,993 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,761 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,457 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,709 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 44,605 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,018 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,662 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,194 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,095 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,729 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 85,951 |
| World Map Quiz | 0 | - | 4.91 | 50,670 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,270 |
| Countries by Founding Story | 0 | - | 4.93 | 55,535 |
| Countries by Road Signs | 0 | - | 4.98 | 45,919 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,803 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,066 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,301 |
| Countries With the Most Languages | 0 | - | 4.91 | 176,141 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,202 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,569 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,657 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,692 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,164 |
| Widest Countries East to West | 0 | - | 4.93 | 120,132 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,021 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,963 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,475 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,058 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,248 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,166 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,850 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,674 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,286 |
| Countries with Double Letters | 0 | - | 4.96 | 70,527 |
| Countries that End in N | 0 | - | 4.94 | 134,752 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 232,089 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,353 |
| Countries with W | 0 | - | 4.96 | 124,657 |
| Countries with Z | 0 | - | 4.98 | 258,983 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,722 |
| Countries That End in U | 0 | - | 4.95 | 108,652 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 91,330 |
| Countries that End in O | 0 | - | 4.92 | 148,125 |
| Countries that End in R | 0 | - | 4.84 | 97,012 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,779 |
| Countries Ending in "IA" | 0 | - | 4.99 | 173,015 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,104 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,262 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,200 |
| Countries That End in Y | 0 | - | 4.90 | 162,098 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,261 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,885 |
| Countries that End in I | 0 | - | 4.92 | 114,949 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,790 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,054 |
| Countries That End in NIA | 0 | - | 4.93 | 101,475 |
| Countries That End in BIA | 0 | - | 4.91 | 126,886 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,517 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,513 |
| Countries That End in RIA | 0 | - | 4.90 | 101,576 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,244 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,286 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,918 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 111,991 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,584 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,384 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,626 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,371 |
| Countries with the Word "And" | 0 | - | 4.98 | 84,470 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,818 |
| Countries that End in L | 0 | - | 4.95 | 135,379 |
| "Land" Countries | 0 | - | 4.98 | 291,498 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,630 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,326 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,942 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,739 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,244 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 210,056 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 169,224 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,317 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,199 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,457 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,789 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,349 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,925 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,934 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,044 |
| ALL First-Level Subdivisions of the World With a Map | 0 | - | 5.00 | 114,038 |
| All First-Level Subdivisions of Europe by Proximity | 0 | - | 4.83 | 67,059 |
| Top World Languages on a Map | 0 | - | 4.91 | 93,752 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.99 | 99,872 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 40,287 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,322,233 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 352,057 |
| One Border Countries | 0 | - | 4.98 | 413,269 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.79 | 36,720 |
