| Landlocked Countries | 0 | - | 4.99 | 417,017 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,192,438 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,614 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,100 |
| Himalayan Countries | 0 | - | 4.95 | 136,663 |
| Andean Countries | 0 | - | 4.95 | 83,564 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,818 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,104 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,487 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,083 |
| Danube Countries | 0 | - | 4.97 | 71,466 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,278 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,879 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,237 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,233 |
| European Landlocked Countries | 0 | - | 4.99 | 146,165 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,826 |
| Countries with the Most Species | 0 | - | 4.99 | 102,216 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,955 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,347 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,527 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,190 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,838 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,216 |
| Countries in the Alps | 0 | - | 4.86 | 117,387 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,936 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,990 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,280 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,779 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,868 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,290 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,033 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,018 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,843 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,382 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,384 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,221 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,761 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,029 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,034 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,788 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,919 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,452 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,282 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,214 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,673 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,850 |
| Largest Countries By Category | 0 | - | 4.97 | 157,321 |
| Countries by Countries | 0 | - | 4.96 | 62,632 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,922 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,091 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,414 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,127 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,743,308 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,283 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,974 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,038 |
| Island Countries | 0 | - | 4.99 | 708,976 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,774 |
| Northernmost Countries | 0 | - | 4.99 | 359,562 |
| Countries of South America | 0 | - | 5.00 | 920,199 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,692 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,984 |
| "Land" Countries | 0 | - | 4.98 | 334,823 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,403 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,423 |
| Countries with Megacities | 0 | - | 4.99 | 249,249 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,282 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,626 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,592 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,603 |
| Countries by Official Language | 0 | - | 4.95 | 194,107 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,908 |
| Countries in their Native Language | 0 | - | 4.99 | 197,723 |
| Independence from Whom | 0 | - | 4.99 | 210,902 |
| Subdivisions by Country | 0 | - | 4.86 | 50,215 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,409 |
| Megadiverse Countries | 0 | - | 4.96 | 134,574 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,922 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,089 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,651 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,957 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,483 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,256 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,660 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,579 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,393 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,814 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,377 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,599 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,700 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,665 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,879 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,228 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,673 |
| World Map Quiz | 0 | - | 4.81 | 64,171 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,597 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,742 |
| Countries by Founding Story | 0 | - | 4.95 | 76,915 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,121 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,709 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,439 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,795 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,310 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,496 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,662 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,166 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,739 |
| Widest Countries East to West | 0 | - | 4.92 | 129,180 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,336 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,705 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,936 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,977 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,012 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,392 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,131 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,684 |
| Countries with Double Letters | 0 | - | 4.96 | 94,300 |
| Countries that End in N | 0 | - | 4.95 | 167,836 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 262,878 |
| Countries with Six Letters | 0 | - | 4.93 | 211,341 |
| Countries with W | 0 | - | 4.97 | 158,951 |
| Countries with Z | 0 | - | 4.98 | 288,957 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,159 |
| Countries That End in U | 0 | - | 4.95 | 120,026 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,253 |
| Countries that End in O | 0 | - | 4.92 | 158,933 |
| Countries that End in R | 0 | - | 4.87 | 118,547 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,322 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,848 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,799 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,850 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,431 |
| Countries That End in Y | 0 | - | 4.90 | 185,466 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,906 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,137 |
| Countries that End in I | 0 | - | 4.94 | 134,703 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,746 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,434 |
| Countries That End in NIA | 0 | - | 4.92 | 109,321 |
| Countries That End in BIA | 0 | - | 4.93 | 148,609 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,464 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,810 |
| Countries That End in RIA | 0 | - | 4.93 | 126,374 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,379 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,168 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,905 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,242 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,850 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,175 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,483 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,990 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,881 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,044 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,568 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,262 |
| Countries that End in L | 0 | - | 4.94 | 156,327 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,076 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,086 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,726 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,589 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,639 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,388 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,848 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,394 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,865 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,304 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,069 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,882 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,309 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,534 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,535 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,484 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,000 |
| One Border Countries | 0 | - | 4.98 | 466,639 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,815,114 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,605,900 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,328 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,989 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,388 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,119 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,130 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,682 |
| Countries by National Anthem | 0 | - | 4.92 | 71,132 |
| NATO Countries | 0 | - | 4.98 | 278,312 |
| EU Countries Quiz | 0 | - | 4.99 | 271,877 |
| Recently Independent Countries | 0 | - | 4.98 | 158,431 |
| French-Speaking Countries | 0 | - | 4.85 | 269,837 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,590 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,051 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,564 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,651 |
| German-Speaking Countries | 0 | - | 4.91 | 144,357 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,068 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,672 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,478 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,171 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,264 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,133 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,364 |
