| Countries by Number of Books Published | 0 | - | 4.95 | 72,372 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,307,446 |
| Companies by Country | 0 | - | 4.61 | 119,201 |
| Landlocked Countries | 0 | - | 4.99 | 418,448 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,883 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,727 |
| Countries by Emojis | 0 | - | 4.99 | 238,505 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,640 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,823 |
| Political Movements by Country | 0 | - | 4.46 | 72,455 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,392 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,601 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,733 |
| Himalayan Countries | 0 | - | 4.94 | 137,198 |
| Andean Countries | 0 | - | 4.95 | 83,810 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,057 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,459 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,744 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,276 |
| Danube Countries | 0 | - | 4.97 | 71,604 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,474 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,002 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,557 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,624 |
| European Landlocked Countries | 0 | - | 4.99 | 146,714 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,055 |
| Countries with the Most Species | 0 | - | 4.99 | 102,858 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,191 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,410 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,570 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,272 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,942 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,325 |
| Countries in the Alps | 0 | - | 4.87 | 117,613 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,087 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,282 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,379 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,933 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,039 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,410 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,223 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,141 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,936 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,513 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,449 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,312 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,888 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,159 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,176 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,096 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,028 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,014 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,907 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,545 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,028 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,462 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,186 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,118 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,961 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,608 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,269 |
| Largest Countries By Category | 0 | - | 4.97 | 157,563 |
| Orthodox Countries | 0 | - | 4.92 | 131,235 |
| Countries by Countries | 0 | - | 4.96 | 62,794 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,448 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,057 |
| Battle to Country | 0 | - | 4.91 | 53,117 |
| Monarchies of Europe | 0 | - | 4.90 | 97,927 |
| Monarchies of Asia | 0 | - | 4.97 | 70,962 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,148 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,281 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,762 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,956 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,414 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,633 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,490 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,897 |
| Island Countries | 0 | - | 4.99 | 709,586 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,836 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,636 |
| Northernmost Countries | 0 | - | 4.99 | 360,289 |
| Countries of South America | 0 | - | 5.00 | 922,408 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,346 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,220 |
| "Land" Countries | 0 | - | 4.98 | 335,701 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,481 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,840 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,274 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 129,363 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,873 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 130,384 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,850 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,757 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,804 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,826 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,726 |
| Name a Valid African Country | 0 | - | 4.98 | 153,720 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,736 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,589 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,887 |
| Countries with Megacities | 0 | - | 4.99 | 256,765 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,754 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,916 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,052 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,917 |
| Countries by Official Language | 0 | - | 4.95 | 194,571 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,443 |
| Countries in their Native Language | 0 | - | 4.99 | 198,119 |
| Independence from Whom | 0 | - | 4.99 | 211,223 |
| Subdivisions by Country | 0 | - | 4.86 | 50,271 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,632 |
| Megadiverse Countries | 0 | - | 4.96 | 134,741 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,487 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,161 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,727 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,005 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,667 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,353 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,906 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,818 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,467 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,970 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,871 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,691 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,963 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,754 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,117 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,305 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,081 |
| World Map Quiz | 0 | - | 4.81 | 64,448 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,992 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,424 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,888 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,596 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,236 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,478 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,644 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,794 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,246 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,252 |
| Widest Countries East to West | 0 | - | 4.92 | 129,332 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,375 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,911 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,982 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,485 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,173 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,508 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,219 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,721 |
| Countries with Double Letters | 0 | - | 4.97 | 95,028 |
| Countries that End in N | 0 | - | 4.95 | 169,857 |
| Countries with Five Letters | 0 | - | 4.96 | 279,727 |
| Countries with Six Letters | 0 | - | 4.94 | 212,400 |
| Countries with W | 0 | - | 4.97 | 159,483 |
| Countries with Z | 0 | - | 4.98 | 289,722 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,675 |
| Countries That End in U | 0 | - | 4.95 | 120,383 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,697 |
| Countries that End in O | 0 | - | 4.92 | 159,174 |
| Countries that End in R | 0 | - | 4.87 | 118,719 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,495 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,251 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,067 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,056 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,641 |
| Countries That End in Y | 0 | - | 4.90 | 185,633 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,178 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,378 |
| Countries that End in I | 0 | - | 4.94 | 134,844 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,029 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,555 |
| Countries That End in NIA | 0 | - | 4.92 | 109,493 |
| Countries That End in BIA | 0 | - | 4.93 | 148,809 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,671 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,017 |
| Countries That End in RIA | 0 | - | 4.93 | 126,508 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,593 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,591 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,170 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,514 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,066 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,294 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,649 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,202 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,083 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,176 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,494 |
| Countries that End in L | 0 | - | 4.94 | 156,522 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,857 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,147 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,815 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,695 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,746 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,713 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,111 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,577 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,064 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,561 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,552 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,937 |
