| Landlocked Countries | 0 | - | 4.99 | 420,684 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,471,403 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,976 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,796 |
| Himalayan Countries | 0 | - | 4.95 | 138,146 |
| Andean Countries | 0 | - | 4.95 | 84,293 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,519 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,384 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,149 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,592 |
| Danube Countries | 0 | - | 4.97 | 71,848 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,820 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,257 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,009 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,458 |
| European Landlocked Countries | 0 | - | 4.99 | 146,987 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,401 |
| Countries with the Most Species | 0 | - | 4.99 | 103,103 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,553 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,511 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,665 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,454 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,127 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,518 |
| Countries in the Alps | 0 | - | 4.87 | 117,975 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,708 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,744 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,553 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,466 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,334 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,839 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,488 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,356 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,085 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,711 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,571 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,425 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,081 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,361 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,376 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,576 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,185 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,701 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,836 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,249 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,712 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,119 |
| Largest Countries By Category | 0 | - | 4.97 | 157,951 |
| Countries by Countries | 0 | - | 4.97 | 63,029 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,482 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,223 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,516 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,520 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,601 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,426 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,091 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,338 |
| Island Countries | 0 | - | 4.99 | 710,476 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,076 |
| Northernmost Countries | 0 | - | 4.99 | 361,308 |
| Countries of South America | 0 | - | 5.00 | 925,292 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,303 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,401 |
| "Land" Countries | 0 | - | 4.98 | 336,640 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,124 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,503 |
| Countries with Megacities | 0 | - | 4.99 | 263,537 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,355 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,273 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,636 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,308 |
| Countries by Official Language | 0 | - | 4.95 | 194,970 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,985 |
| Countries in their Native Language | 0 | - | 4.99 | 198,479 |
| Independence from Whom | 0 | - | 4.99 | 211,752 |
| Subdivisions by Country | 0 | - | 4.86 | 50,371 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,011 |
| Megadiverse Countries | 0 | - | 4.96 | 134,901 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,823 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,268 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,852 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,061 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,940 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,491 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,238 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,948 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,571 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,045 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,372 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,800 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,104 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,880 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,258 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,423 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,734 |
| World Map Quiz | 0 | - | 4.81 | 64,892 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,487 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,206 |
| Countries by Founding Story | 0 | - | 4.95 | 77,236 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,817 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,111 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,841 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,819 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,743 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,879 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,182 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,363 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,453 |
| Widest Countries East to West | 0 | - | 4.92 | 129,521 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,418 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,193 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,068 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,646 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,424 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,717 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,316 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,767 |
| Countries with Double Letters | 0 | - | 4.97 | 95,584 |
| Countries that End in N | 0 | - | 4.95 | 170,589 |
| Countries with Five Letters | 0 | - | 4.96 | 281,605 |
| Countries with Six Letters | 0 | - | 4.94 | 213,002 |
| Countries with W | 0 | - | 4.97 | 159,899 |
| Countries with Z | 0 | - | 4.98 | 290,832 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,192 |
| Countries That End in U | 0 | - | 4.95 | 120,596 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,098 |
| Countries that End in O | 0 | - | 4.92 | 159,345 |
| Countries that End in R | 0 | - | 4.87 | 118,832 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,610 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,698 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,374 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,269 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,884 |
| Countries That End in Y | 0 | - | 4.91 | 185,760 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,579 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,654 |
| Countries that End in I | 0 | - | 4.94 | 134,980 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,773 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,704 |
| Countries That End in NIA | 0 | - | 4.92 | 109,647 |
| Countries That End in BIA | 0 | - | 4.93 | 149,014 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,906 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,241 |
| Countries That End in RIA | 0 | - | 4.93 | 126,672 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,814 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,180 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,461 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,850 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,398 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,448 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,842 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,378 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,339 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,309 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,057 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,773 |
| Countries that End in L | 0 | - | 4.94 | 156,690 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,910 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,207 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,922 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,842 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,891 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,463 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,427 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,830 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,363 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,864 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,736 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,027 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,690 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,649 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,772 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,958 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,406 |
| One Border Countries | 0 | - | 4.98 | 468,709 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,516 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,624,387 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,731 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,838 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,926 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,406 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,556 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,092 |
| Countries by National Anthem | 0 | - | 4.93 | 71,249 |
| NATO Countries | 0 | - | 4.98 | 280,520 |
| EU Countries Quiz | 0 | - | 4.99 | 274,375 |
| Recently Independent Countries | 0 | - | 4.98 | 159,266 |
| French-Speaking Countries | 0 | - | 4.85 | 270,551 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,840 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,090 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,450 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,323 |
| German-Speaking Countries | 0 | - | 4.92 | 145,584 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,834 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,182 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,804 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,605 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,436 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,695 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,933 |
