| Boundary Waters | 0 | - | 4.93 | 81,594 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 75,843 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.83 | 30,600 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 330,361 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,418,013 |
| World Geography on a Map #1 | 0 | - | 4.93 | 67,906 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 138,691 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 110,753 |
| Members of the Arab League | 0 | - | 4.85 | 64,758 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,032 |
| Himalayan Countries | 0 | - | 4.95 | 106,987 |
| Andean Countries | 0 | - | 4.91 | 59,508 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,575 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,322 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,690 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,574 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,875 |
| Danube Countries | 0 | - | 4.96 | 57,013 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,028 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,123 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,115 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,992 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,269 |
| European Landlocked Countries | 0 | - | 4.99 | 136,600 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,397 |
| Countries with the Most Species | 0 | - | 4.99 | 89,718 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,897 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,898 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,191 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,739 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,678 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,953 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,574 |
| Countries in the Alps | 0 | - | 4.84 | 103,377 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,978 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,489 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,992 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,049 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,533 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,022 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,178 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,520 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,548 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,113 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,879 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,836 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,883 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,227 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,389 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,953 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,525 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,706 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,785 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,766 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,264 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,607 |
| Largest Countries By Category | 0 | - | 4.97 | 145,831 |
| Countries by Countries | 0 | - | 4.96 | 55,204 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,001 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,019 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 135,395 |
| Western Europe Map Quiz | 0 | - | 4.86 | 89,541 |
| Tourist Attraction by Negative Review | 0 | - | 4.90 | 60,196 |
| Who Controls It? #1 | 0 | - | 4.84 | 45,700 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 182,357 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 111,557 |
| Longest International Borders | 0 | - | 4.99 | 235,421 |
| Countries with Three Borders | 0 | - | 4.96 | 31,834 |
| Country Connect by Northernmost Point | 0 | - | 4.97 | 36,456 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 40,853 |
| World Capitals Quiz | 0 | - | 5.00 | 4,540,471 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,129,982 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,197,355 |
| Demonyms Quiz | 0 | - | 4.12 | 179,371 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,397,651 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,219 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,595 |
| Island Countries Quiz | 0 | - | 4.99 | 665,278 |
| Biggest Countries by Area | 0 | - | 5.00 | 941,172 |
| Northernmost Countries | 0 | - | 4.99 | 329,504 |
| Countries of South America | 0 | - | 5.00 | 803,203 |
| Countries of Oceania | 0 | - | 5.00 | 905,235 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,595,013 |
| Top World Languages | 0 | - | 4.92 | 717,021 |
| Analogies of Countries #1 | 0 | - | 4.88 | 63,015 |
| Pacific Ocean General Knowledge | 0 | - | 4.59 | 26,839 |
| Largest Deserts in the World | 0 | - | 4.03 | 41,462 |
| Five Letter Geography #4 | 0 | - | 4.83 | 67,322 |
| World Map Divided into Regions | 0 | - | 4.18 | 35,980 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,757 |
| Countries with Megacities | 0 | - | 4.99 | 200,034 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,591 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,079 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,136 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 65,065 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,823 |
| Global Cities on a World Map | 0 | - | 4.92 | 92,121 |
| Northernmost Capital Cities | 0 | - | 4.98 | 95,167 |
| Most Remote Capital Cities | 0 | - | 4.90 | 44,360 |
| Capital Cities: Ports and Saints | 0 | - | 4.94 | 35,092 |
| Capitals with the Shortest Names | 0 | - | 4.96 | 92,233 |
| Same Letter Country and Capital | 0 | - | 4.99 | 128,931 |
| Countries by Capital City | 0 | - | 4.99 | 50,589 |
| Capital Cities Based on First Two Letters | 0 | - | 4.84 | 66,628 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 105,724 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 73,792 |
| Moved Capital Cities | 0 | - | 4.96 | 67,556 |
| Countries by Official Language | 0 | - | 4.96 | 174,306 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,461 |
| Countries in their Native Language | 0 | - | 4.98 | 179,498 |
| Independence from Whom | 0 | - | 4.99 | 187,733 |
| Subdivisions by Country | 0 | - | 4.82 | 46,716 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,709 |
| Megadiverse Countries | 0 | - | 4.96 | 126,215 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,612 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,189 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,653 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,426 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,553 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,906 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,725 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,420 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,696 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,542 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,987 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,631 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,175 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,064 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,695 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 84,629 |
| World Map Quiz | 0 | - | 4.91 | 50,569 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,217 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,666 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,990 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,238 |
| Countries With the Most Languages | 0 | - | 4.91 | 175,941 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,116 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,511 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,577 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,632 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,108 |
| Widest Countries East to West | 0 | - | 4.93 | 120,071 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,010 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,893 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,423 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,031 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,198 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,101 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,801 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,652 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,267 |
| Countries with Double Letters | 0 | - | 4.96 | 70,139 |
| Countries that End in N | 0 | - | 4.94 | 134,349 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 231,715 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,077 |
| Countries with W | 0 | - | 4.96 | 124,279 |
| Countries with Z | 0 | - | 4.98 | 246,390 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,520 |
| Countries That End in U | 0 | - | 4.95 | 108,396 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 90,937 |
| Countries that End in O | 0 | - | 4.92 | 147,929 |
| Countries that End in R | 0 | - | 4.84 | 96,892 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,695 |
| Countries Ending in "IA" | 0 | - | 4.99 | 172,848 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,002 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,191 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,122 |
| Countries That End in Y | 0 | - | 4.90 | 162,043 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,151 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,824 |
| Countries that End in I | 0 | - | 4.92 | 114,898 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,707 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,001 |
| Countries That End in NIA | 0 | - | 4.93 | 101,416 |
| Countries That End in BIA | 0 | - | 4.91 | 126,807 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,380 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,452 |
| Countries That End in RIA | 0 | - | 4.90 | 101,525 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,181 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,115 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,812 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 111,882 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,494 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,272 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,544 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,328 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,723 |
| Countries that End in L | 0 | - | 4.95 | 135,316 |
| "Land" Countries | 0 | - | 4.98 | 291,389 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,530 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,313 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,903 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,710 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 72,206 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 209,928 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 169,048 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,260 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,123 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,347 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,716 |
