| Landlocked Countries | 0 | - | 4.99 | 419,200 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,351,489 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,099 |
| Himalayan Countries | 0 | - | 4.95 | 137,528 |
| Andean Countries | 0 | - | 4.95 | 83,990 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,261 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,732 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,882 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,383 |
| Danube Countries | 0 | - | 4.97 | 71,694 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,603 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,085 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,695 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,770 |
| European Landlocked Countries | 0 | - | 4.99 | 146,803 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,167 |
| Countries with the Most Species | 0 | - | 4.99 | 102,940 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,308 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,436 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,597 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,323 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,004 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,387 |
| Countries in the Alps | 0 | - | 4.87 | 117,725 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,160 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,413 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,436 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,024 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,133 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,733 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,309 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,211 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,980 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,574 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,499 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,349 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,949 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,207 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,230 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,240 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,082 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,584 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,560 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,489 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,279 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,015 |
| Largest Countries By Category | 0 | - | 4.97 | 157,678 |
| Countries by Countries | 0 | - | 4.96 | 62,859 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,246 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,168 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,479 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,345 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,758,256 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,399 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,748 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,642 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,197 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,668 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,234 |
| Island Countries | 0 | - | 4.99 | 709,860 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,324 |
| Northernmost Countries | 0 | - | 4.99 | 360,586 |
| Countries of South America | 0 | - | 5.00 | 923,222 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,553 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,105 |
| "Land" Countries | 0 | - | 4.98 | 335,847 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,243 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,099 |
| Countries with Megacities | 0 | - | 4.99 | 261,090 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,954 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,033 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,231 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,050 |
| Countries by Official Language | 0 | - | 4.95 | 194,677 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,594 |
| Countries in their Native Language | 0 | - | 4.99 | 198,227 |
| Independence from Whom | 0 | - | 4.99 | 211,377 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,752 |
| Megadiverse Countries | 0 | - | 4.96 | 134,785 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,578 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,197 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,764 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,025 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,731 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,398 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,013 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,859 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,501 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,998 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,039 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,728 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,006 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,793 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,167 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,335 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,261 |
| World Map Quiz | 0 | - | 4.81 | 64,612 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,709 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,056 |
| Countries by Founding Story | 0 | - | 4.95 | 77,092 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,554 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,955 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,671 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,391 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,545 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,698 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,849 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,279 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,307 |
| Widest Countries East to West | 0 | - | 4.92 | 129,396 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,387 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,983 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,998 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,530 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,244 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,570 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,246 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,730 |
| Countries with Double Letters | 0 | - | 4.97 | 95,125 |
| Countries that End in N | 0 | - | 4.95 | 170,065 |
| Countries with Five Letters | 0 | - | 4.96 | 280,461 |
| Countries with Six Letters | 0 | - | 4.94 | 212,531 |
| Countries with W | 0 | - | 4.97 | 159,543 |
| Countries with Z | 0 | - | 4.98 | 289,860 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,783 |
| Countries That End in U | 0 | - | 4.95 | 120,424 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,787 |
| Countries that End in O | 0 | - | 4.92 | 159,212 |
| Countries that End in R | 0 | - | 4.87 | 118,744 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,521 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,376 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,140 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,101 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,689 |
| Countries That End in Y | 0 | - | 4.91 | 185,654 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,262 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,457 |
| Countries that End in I | 0 | - | 4.94 | 134,881 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,120 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,587 |
| Countries That End in NIA | 0 | - | 4.92 | 109,526 |
| Countries That End in BIA | 0 | - | 4.93 | 148,865 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,748 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,082 |
| Countries That End in RIA | 0 | - | 4.93 | 126,556 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,658 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,765 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,268 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,631 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,157 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,341 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,701 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,261 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,153 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,212 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,854 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,563 |
| Countries that End in L | 0 | - | 4.94 | 156,551 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,120 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,159 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,851 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,735 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,793 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,828 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,204 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,654 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,152 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,643 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,600 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,964 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,606 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,685 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,636 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,815 |
| One Border Countries | 0 | - | 4.98 | 467,814 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,823,509 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,616,209 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,581 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,476 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,711 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,297 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,396 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,954 |
| Countries by National Anthem | 0 | - | 4.93 | 71,190 |
| NATO Countries | 0 | - | 4.98 | 279,455 |
| EU Countries Quiz | 0 | - | 4.99 | 273,095 |
| Recently Independent Countries | 0 | - | 4.98 | 159,051 |
| French-Speaking Countries | 0 | - | 4.85 | 270,258 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,773 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,641 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,591 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,114 |
| German-Speaking Countries | 0 | - | 4.91 | 145,373 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,401 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,001 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,220 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,861 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,890 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,396 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,636 |
