| Countries With No Rivers | 0 | - | 4.96 | 77,267 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,263 |
| Countries with Fjords | 0 | - | 4.94 | 101,622 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,119 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,088 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,673 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,910 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,229 |
| North Sea Countries | 0 | - | 4.92 | 87,796 |
| Black Sea Countries | 0 | - | 4.87 | 60,808 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,668 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,760 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,430 |
| Megadiverse Countries | 0 | - | 4.96 | 149,516 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,457 |
| African Great Lakes | 0 | - | 4.82 | 67,145 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,794 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,918 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,840 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,071 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,987,412 |
| Capitals by River | 0 | - | 4.55 | 48,407 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,704 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,788 |
| 10 Longest Rivers in the United States | 0 | - | 4.86 | 39,466 |
| Landlocked Countries | 0 | - | 4.99 | 427,471 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,813,994 |
| Rivers of the United States | 0 | - | 4.93 | 66,804 |
| Biggest City by River | 0 | - | 4.38 | 52,988 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,287 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,772 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,953 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,823 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,775 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,106 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,496 |
| Island Countries | 0 | - | 4.99 | 713,087 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,013 |
| Himalayan Countries | 0 | - | 4.93 | 140,915 |
| Andean Countries | 0 | - | 4.94 | 85,849 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,960 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,558 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,501 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,719 |
| Danube Countries | 0 | - | 4.97 | 72,577 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,839 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,997 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,488 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,958 |
| European Landlocked Countries | 0 | - | 4.99 | 147,798 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,568 |
| Countries with the Most Species | 0 | - | 4.99 | 103,657 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,675 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,822 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,962 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,940 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,692 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,150 |
| Countries in the Alps | 0 | - | 4.87 | 119,010 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,059 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,199 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,076 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,197 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,157 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,408 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,625 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,014 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,522 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,329 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,966 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,841 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,689 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,943 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,045 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,193 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,753 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,626 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,865 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,435 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,562 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,631 |
| Largest Countries By Category | 0 | - | 4.97 | 159,126 |
| Countries by Countries | 0 | - | 4.97 | 63,825 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,787 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,257 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,434 |
| Northernmost Countries | 0 | - | 4.99 | 364,706 |
| Landforms by Country | 0 | - | 4.52 | 52,031 |
| Countries of South America | 0 | - | 5.00 | 934,626 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,886 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,811 |
| "Land" Countries | 0 | - | 4.98 | 339,089 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,237 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,427 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,060 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,567 |
| Countries with Megacities | 0 | - | 4.99 | 268,005 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,219 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,372 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,549 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,476 |
| Countries by Official Language | 0 | - | 4.95 | 196,277 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,011 |
| Countries in their Native Language | 0 | - | 4.99 | 199,997 |
| Independence from Whom | 0 | - | 4.99 | 213,469 |
| Subdivisions by Country | 0 | - | 4.87 | 50,676 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,713 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,174 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,590 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,828 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,265 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,408 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,511 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,938 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,330 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,641 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,188 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,291 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,835 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,506 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,520 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,231 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,836 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,760 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,652 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,987 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,836 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,569 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,260 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,730 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,003 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,582 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,697 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,877 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,777 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,978 |
| Widest Countries East to West | 0 | - | 4.92 | 130,886 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,635 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,434 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,574 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,175 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,158 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,631 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,543 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,929 |
| Countries with Double Letters | 0 | - | 4.96 | 97,712 |
| Countries that End in N | 0 | - | 4.95 | 172,707 |
| Countries with Five Letters | 0 | - | 4.96 | 284,743 |
| Countries with Six Letters | 0 | - | 4.94 | 215,039 |
| Countries with W | 0 | - | 4.96 | 161,371 |
| Countries with Z | 0 | - | 4.98 | 293,102 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,740 |
| Countries That End in U | 0 | - | 4.95 | 121,428 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,491 |
| Countries that End in O | 0 | - | 4.92 | 160,402 |
| Countries that End in R | 0 | - | 4.87 | 119,301 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,075 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,206 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,102 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,258 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,927 |
| Countries That End in Y | 0 | - | 4.91 | 186,191 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,440 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,456 |
| Countries that End in I | 0 | - | 4.94 | 135,445 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,385 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,164 |
| Countries That End in NIA | 0 | - | 4.92 | 110,173 |
| Countries That End in BIA | 0 | - | 4.93 | 149,769 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,972 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,927 |
| Countries That End in RIA | 0 | - | 4.93 | 127,176 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,567 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,015 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,432 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,895 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,451 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,940 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,482 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,616 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,756 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,656 |
| Countries that End in L | 0 | - | 4.94 | 157,274 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,689 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,385 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,904 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,173 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,559 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,711 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,340 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,547 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,443 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,224 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,338 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,306 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,976 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,885 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,379 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,854,356 |
| One Border Countries | 0 | - | 4.98 | 472,697 |
