| Landlocked Countries | 0 | - | 4.99 | 413,694 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,926,223 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,620 |
| Himalayan Countries | 0 | - | 4.95 | 135,386 |
| Andean Countries | 0 | - | 4.94 | 82,835 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,227 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,227 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,917 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,619 |
| Danube Countries | 0 | - | 4.97 | 71,090 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,773 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,542 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,497 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,414 |
| European Landlocked Countries | 0 | - | 4.99 | 145,761 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,223 |
| Countries with the Most Species | 0 | - | 4.99 | 95,245 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,359 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,200 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,371 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,960 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,579 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,953 |
| Countries in the Alps | 0 | - | 4.86 | 116,834 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,577 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,271 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,016 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,428 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,177 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,009 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,586 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,762 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,319 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,067 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,198 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,046 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,457 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,753 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,758 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,085 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,652 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,255 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,776 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,334 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,693 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,607 |
| Largest Countries By Category | 0 | - | 4.97 | 156,771 |
| Countries by Countries | 0 | - | 4.96 | 62,263 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,396 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,963 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,333 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,697 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,111 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,775 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,717,539 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,094 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,142 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,885 |
| Island Countries | 0 | - | 4.99 | 707,660 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,549 |
| Northernmost Countries | 0 | - | 4.99 | 357,765 |
| Countries of South America | 0 | - | 5.00 | 914,889 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,617 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,628 |
| "Land" Countries | 0 | - | 4.98 | 333,675 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,510 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,285 |
| Countries with Megacities | 0 | - | 4.99 | 247,003 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,162 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,003 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,588 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,905 |
| Countries by Official Language | 0 | - | 4.95 | 192,786 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,151 |
| Countries in their Native Language | 0 | - | 4.99 | 196,648 |
| Independence from Whom | 0 | - | 4.99 | 209,712 |
| Subdivisions by Country | 0 | - | 4.86 | 50,069 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,771 |
| Megadiverse Countries | 0 | - | 4.97 | 133,907 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,813 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,921 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,431 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,863 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,672 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,008 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,035 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,157 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,217 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,748 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,582 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,426 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,500 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,506 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,683 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,030 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,610 |
| World Map Quiz | 0 | - | 4.81 | 63,501 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,708 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,338 |
| Countries by Founding Story | 0 | - | 4.95 | 76,551 |
| Countries by Road Signs | 0 | - | 4.98 | 53,106 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,367 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,997 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,959 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,789 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,861 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,068 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,282 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,951 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,339 |
| Widest Countries East to West | 0 | - | 4.92 | 128,610 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,218 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,225 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,570 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,695 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,639 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,049 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,051 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,586 |
| Countries with Double Letters | 0 | - | 4.97 | 93,399 |
| Countries that End in N | 0 | - | 4.94 | 156,890 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,698 |
| Countries with Six Letters | 0 | - | 4.93 | 210,376 |
| Countries with W | 0 | - | 4.97 | 158,237 |
| Countries with Z | 0 | - | 4.98 | 287,894 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,561 |
| Countries That End in U | 0 | - | 4.95 | 119,521 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,571 |
| Countries that End in O | 0 | - | 4.92 | 158,561 |
| Countries that End in R | 0 | - | 4.87 | 118,276 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,861 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,047 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,342 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,501 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,031 |
| Countries That End in Y | 0 | - | 4.90 | 185,209 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,388 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,696 |
| Countries that End in I | 0 | - | 4.94 | 134,419 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,206 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,198 |
| Countries That End in NIA | 0 | - | 4.92 | 109,012 |
| Countries That End in BIA | 0 | - | 4.92 | 147,721 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,070 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,491 |
| Countries That End in RIA | 0 | - | 4.93 | 126,087 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,013 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,207 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,531 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,891 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,363 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,932 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,128 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,652 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,516 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,816 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,154 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,820 |
| Countries that End in L | 0 | - | 4.94 | 155,738 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,228 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,988 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,514 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,303 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,437 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,021 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,112 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,920 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,202 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,393 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,533 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,621 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,173 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,423 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,335 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,223 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,681 |
| One Border Countries | 0 | - | 4.98 | 464,434 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,642 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,801,488 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,588,494 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,851 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,950 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,899 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,500 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,620 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,284 |
| Countries by National Anthem | 0 | - | 4.93 | 71,032 |
| NATO Countries | 0 | - | 4.98 | 275,817 |
| EU Countries Quiz | 0 | - | 4.99 | 269,994 |
| Recently Independent Countries | 0 | - | 4.98 | 157,994 |
| French-Speaking Countries | 0 | - | 4.85 | 268,819 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,381 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,033 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,981 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,379 |
| German-Speaking Countries | 0 | - | 4.89 | 123,508 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,616 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,317 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,196 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,079 |
