| Landlocked Countries | 0 | - | 4.99 | 421,252 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,524,887 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,047 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,098 |
| Himalayan Countries | 0 | - | 4.95 | 138,403 |
| Andean Countries | 0 | - | 4.93 | 84,422 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,638 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,579 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,267 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,670 |
| Danube Countries | 0 | - | 4.97 | 71,924 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,908 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,335 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,148 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,604 |
| European Landlocked Countries | 0 | - | 4.99 | 147,057 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,503 |
| Countries with the Most Species | 0 | - | 4.99 | 103,163 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,654 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,545 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,688 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,490 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,171 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,582 |
| Countries in the Alps | 0 | - | 4.87 | 118,084 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,572 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,893 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,599 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,527 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,412 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,890 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,574 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,429 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,132 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,778 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,608 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,468 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,145 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,405 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,445 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,719 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,240 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 60,938 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,937 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,567 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,889 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,164 |
| Largest Countries By Category | 0 | - | 4.97 | 158,073 |
| Countries by Countries | 0 | - | 4.96 | 63,109 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,584 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,252 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,540 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,598 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,773,311 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,974 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,311 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,766 |
| Island Countries | 0 | - | 4.99 | 710,770 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,913 |
| Northernmost Countries | 0 | - | 4.99 | 361,628 |
| Countries of South America | 0 | - | 5.00 | 926,249 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,491 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,874,859 |
| "Land" Countries | 0 | - | 4.98 | 337,100 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,813 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,708 |
| Countries with Megacities | 0 | - | 4.99 | 264,093 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,545 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,376 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,812 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,432 |
| Countries by Official Language | 0 | - | 4.95 | 195,100 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,175 |
| Countries in their Native Language | 0 | - | 4.99 | 198,828 |
| Independence from Whom | 0 | - | 4.99 | 211,919 |
| Subdivisions by Country | 0 | - | 4.86 | 50,396 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,604 |
| Megadiverse Countries | 0 | - | 4.96 | 134,951 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,952 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,307 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,882 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,083 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,020 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,555 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,358 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,987 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,606 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,056 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,530 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,837 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,154 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,923 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,306 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,455 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,972 |
| World Map Quiz | 0 | - | 4.81 | 64,991 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,882 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,275 |
| Countries by Founding Story | 0 | - | 4.95 | 77,303 |
| Countries by Road Signs | 0 | - | 4.98 | 53,937 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,953 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,192 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,914 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,012 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,815 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,940 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,243 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,400 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,518 |
| Widest Countries East to West | 0 | - | 4.92 | 129,579 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,434 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,293 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,096 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,716 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,509 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,785 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,342 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,785 |
| Countries with Double Letters | 0 | - | 4.96 | 96,035 |
| Countries that End in N | 0 | - | 4.95 | 170,927 |
| Countries with Five Letters | 0 | - | 4.96 | 282,091 |
| Countries with Six Letters | 0 | - | 4.94 | 213,346 |
| Countries with W | 0 | - | 4.97 | 160,174 |
| Countries with Z | 0 | - | 4.98 | 291,224 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,537 |
| Countries That End in U | 0 | - | 4.95 | 120,762 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,306 |
| Countries that End in O | 0 | - | 4.92 | 159,453 |
| Countries that End in R | 0 | - | 4.87 | 118,918 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,679 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,908 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,588 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,399 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,312 |
| Countries That End in Y | 0 | - | 4.91 | 185,827 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,786 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,751 |
| Countries that End in I | 0 | - | 4.94 | 135,044 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,958 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,765 |
| Countries That End in NIA | 0 | - | 4.92 | 109,716 |
| Countries That End in BIA | 0 | - | 4.93 | 149,118 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,013 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,346 |
| Countries That End in RIA | 0 | - | 4.93 | 126,755 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,936 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,364 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,577 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,968 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,545 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,529 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,941 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,422 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,448 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,372 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,185 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,874 |
| Countries that End in L | 0 | - | 4.94 | 156,760 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,321 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,241 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,962 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,898 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,930 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,603 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,556 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,912 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,442 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,318 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,805 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,057 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,683 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,820 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,993 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,680 |
| One Border Countries | 0 | - | 4.98 | 469,393 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,831,966 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,628,158 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,823 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,019 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,016 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,491 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,640 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,156 |
| Countries by National Anthem | 0 | - | 4.93 | 71,267 |
| NATO Countries | 0 | - | 4.98 | 281,022 |
| EU Countries Quiz | 0 | - | 4.99 | 274,931 |
| Recently Independent Countries | 0 | - | 4.98 | 159,372 |
| French-Speaking Countries | 0 | - | 4.85 | 270,705 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,868 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,284 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,900 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,863 |
| German-Speaking Countries | 0 | - | 4.91 | 145,657 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,910 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,238 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 166,077 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,934 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,658 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,874 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,129 |
