| Landlocked Countries | 0 | - | 4.99 | 427,719 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,007,752 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,135 |
| Himalayan Countries | 0 | - | 4.93 | 141,024 |
| Andean Countries | 0 | - | 4.94 | 85,901 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,017 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,634 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,561 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,763 |
| Danube Countries | 0 | - | 4.97 | 72,609 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,875 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,025 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,531 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,016 |
| European Landlocked Countries | 0 | - | 4.99 | 147,822 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,608 |
| Countries with the Most Species | 0 | - | 4.99 | 103,672 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,714 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,834 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,975 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,963 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,709 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,176 |
| Countries in the Alps | 0 | - | 4.87 | 119,051 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,129 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,258 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,092 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,221 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,193 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,426 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,645 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,036 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,540 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,351 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,978 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,852 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,708 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,964 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,065 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,263 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,769 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,788 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,907 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,571 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,634 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,642 |
| Largest Countries By Category | 0 | - | 4.97 | 159,194 |
| Countries by Countries | 0 | - | 4.97 | 63,857 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,522 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,460 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,719 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,602 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,291 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,680 |
| Bordering Countries by HDI Difference | 0 | - | 4.89 | 52,207 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,056 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,187 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,649 |
| Island Countries | 0 | - | 4.99 | 713,207 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,736 |
| Northernmost Countries | 0 | - | 4.99 | 364,843 |
| Countries of South America | 0 | - | 5.00 | 934,930 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,300 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,694 |
| "Land" Countries | 0 | - | 4.98 | 339,175 |
| Highest HDI Countries with Exceptions | 0 | - | 4.61 | 63,345 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,526 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,660 |
| Countries with Megacities | 0 | - | 4.99 | 268,184 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,299 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,412 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,641 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,527 |
| Countries by Official Language | 0 | - | 4.95 | 196,333 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,090 |
| Countries in their Native Language | 0 | - | 4.99 | 200,043 |
| Independence from Whom | 0 | - | 4.99 | 213,540 |
| Subdivisions by Country | 0 | - | 4.87 | 50,682 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,755 |
| Megadiverse Countries | 0 | - | 4.96 | 149,781 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,221 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,596 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,850 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,272 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,550 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,962 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,379 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,658 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,213 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,299 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,899 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,520 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,532 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,672 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,013 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,896 |
| World Map Quiz | 0 | - | 4.81 | 65,984 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,176 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,864 |
| Countries by Founding Story | 0 | - | 4.95 | 77,952 |
| Countries by Road Signs | 0 | - | 4.98 | 54,498 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,634 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,292 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,764 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,073 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,618 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,737 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,906 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,788 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,016 |
| Widest Countries East to West | 0 | - | 4.92 | 130,908 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,469 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,587 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,197 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,495 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,652 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,783 |
| Countries that End in N | 0 | - | 4.95 | 172,782 |
| Countries with Five Letters | 0 | - | 4.96 | 284,840 |
| Countries with Six Letters | 0 | - | 4.94 | 215,116 |
| Countries with W | 0 | - | 4.96 | 161,425 |
| Countries with Z | 0 | - | 4.98 | 293,176 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,796 |
| Countries That End in U | 0 | - | 4.95 | 121,457 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,550 |
| Countries that End in O | 0 | - | 4.92 | 160,424 |
| Countries that End in R | 0 | - | 4.87 | 119,316 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,088 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,266 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,652 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,302 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,975 |
| Countries That End in Y | 0 | - | 4.91 | 186,205 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,519 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,484 |
| Countries that End in I | 0 | - | 4.94 | 135,461 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,454 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,181 |
| Countries That End in NIA | 0 | - | 4.92 | 110,194 |
| Countries That End in BIA | 0 | - | 4.93 | 149,788 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,004 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,951 |
| Countries That End in RIA | 0 | - | 4.93 | 127,197 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,595 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,074 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,466 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,925 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,485 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,958 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,519 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,624 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,114 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,772 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,971 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,688 |
| Countries that End in L | 0 | - | 4.94 | 157,294 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,820 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,394 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,919 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,187 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,573 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,759 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,380 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,570 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,476 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,267 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,362 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,310 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,986 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,894 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,392 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,847 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,207 |
| One Border Countries | 0 | - | 4.98 | 472,860 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,782 |
| Five Highest HDI Countries by Continent | 0 | - | 4.55 | 58,706 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,855,555 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,662,415 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,511 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,625 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,892 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,275 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,428 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,765 |
| Countries by National Anthem | 0 | - | 4.92 | 71,449 |
| NATO Countries | 0 | - | 4.98 | 284,272 |
| EU Countries Quiz | 0 | - | 4.99 | 279,185 |
| Recently Independent Countries | 0 | - | 4.98 | 160,585 |
| French-Speaking Countries | 0 | - | 4.85 | 271,995 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,276 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,368 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 292,149 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 278,327 |
| German-Speaking Countries | 0 | - | 4.91 | 146,117 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,810 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,933 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,891 |
