| Landlocked Countries | 0 | - | 4.99 | 413,310 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,894,186 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,446 |
| Himalayan Countries | 0 | - | 4.95 | 135,232 |
| Andean Countries | 0 | - | 4.94 | 82,765 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,177 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,115 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,847 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,550 |
| Danube Countries | 0 | - | 4.97 | 71,047 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,716 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,504 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,402 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,328 |
| European Landlocked Countries | 0 | - | 4.99 | 145,718 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,149 |
| Countries with the Most Species | 0 | - | 4.99 | 95,228 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,291 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,192 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,357 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,941 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,549 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,921 |
| Countries in the Alps | 0 | - | 4.87 | 116,772 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,527 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,191 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,986 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,391 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,117 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,972 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,533 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,726 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,115 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,022 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,183 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,024 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,420 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,714 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,723 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,003 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,612 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,239 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,736 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,101 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,541 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,576 |
| Largest Countries By Category | 0 | - | 4.97 | 156,703 |
| Countries by Countries | 0 | - | 4.96 | 62,228 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,329 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,952 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,318 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,723 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,713,934 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,485 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,019 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,618 |
| Island Countries | 0 | - | 4.99 | 707,489 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,064 |
| Northernmost Countries | 0 | - | 4.99 | 357,550 |
| Countries of South America | 0 | - | 5.00 | 914,174 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,765 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,170 |
| "Land" Countries | 0 | - | 4.98 | 333,558 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,473 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,000 |
| Countries with Megacities | 0 | - | 4.99 | 246,525 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,919 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,800 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,370 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,759 |
| Countries by Official Language | 0 | - | 4.95 | 192,707 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,039 |
| Countries in their Native Language | 0 | - | 4.99 | 196,562 |
| Independence from Whom | 0 | - | 4.99 | 209,606 |
| Subdivisions by Country | 0 | - | 4.86 | 50,051 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,689 |
| Megadiverse Countries | 0 | - | 4.97 | 133,867 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,739 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,904 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,407 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,609 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,975 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,844 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,120 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,204 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,732 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,506 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,398 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,475 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,486 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,646 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,004 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,497 |
| World Map Quiz | 0 | - | 4.81 | 63,459 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,486 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,287 |
| Countries by Founding Story | 0 | - | 4.95 | 76,497 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,272 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,947 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,908 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,647 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,824 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,029 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,240 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,924 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,312 |
| Widest Countries East to West | 0 | - | 4.92 | 128,580 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,210 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,168 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,551 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,668 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,598 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,012 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,046 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,568 |
| Countries with Double Letters | 0 | - | 4.97 | 93,310 |
| Countries that End in N | 0 | - | 4.94 | 156,371 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,605 |
| Countries with Six Letters | 0 | - | 4.93 | 210,281 |
| Countries with W | 0 | - | 4.97 | 158,179 |
| Countries with Z | 0 | - | 4.98 | 287,791 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,500 |
| Countries That End in U | 0 | - | 4.95 | 119,490 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,478 |
| Countries that End in O | 0 | - | 4.92 | 158,525 |
| Countries that End in R | 0 | - | 4.87 | 118,249 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,845 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,953 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,281 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,456 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,956 |
| Countries That End in Y | 0 | - | 4.90 | 185,183 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,310 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,627 |
| Countries that End in I | 0 | - | 4.94 | 134,380 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,129 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,175 |
| Countries That End in NIA | 0 | - | 4.92 | 108,974 |
| Countries That End in BIA | 0 | - | 4.92 | 147,673 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,025 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,449 |
| Countries That End in RIA | 0 | - | 4.93 | 126,054 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,974 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,119 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,486 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,867 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,323 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,911 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,087 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,612 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,466 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,803 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,089 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,776 |
| Countries that End in L | 0 | - | 4.94 | 155,695 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,996 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,977 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,494 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,268 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,406 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,706 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,038 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,889 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,138 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,332 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,485 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,596 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,160 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,410 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,296 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,493 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,481 |
| One Border Countries | 0 | - | 4.98 | 464,138 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,799,781 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,586,290 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,779 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,828 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,826 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,442 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,542 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,207 |
| Countries by National Anthem | 0 | - | 4.92 | 71,010 |
| NATO Countries | 0 | - | 4.98 | 275,528 |
| EU Countries Quiz | 0 | - | 4.99 | 269,747 |
| Recently Independent Countries | 0 | - | 4.98 | 157,942 |
| French-Speaking Countries | 0 | - | 4.85 | 268,724 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,362 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,892 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,785 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,081 |
| German-Speaking Countries | 0 | - | 4.89 | 123,491 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,579 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,292 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,060 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,972 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,028 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,485 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 110,882 |
| Olympic Host Countries | 0 | - | 4.98 | 198,836 |
