| Landlocked Countries | 0 | - | 4.99 | 427,200 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,965,279 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,888 |
| Himalayan Countries | 0 | - | 4.93 | 140,802 |
| Andean Countries | 0 | - | 4.94 | 85,788 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,908 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,476 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,457 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,684 |
| Danube Countries | 0 | - | 4.97 | 72,546 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,795 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,970 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,429 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,908 |
| European Landlocked Countries | 0 | - | 4.99 | 147,735 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,530 |
| Countries with the Most Species | 0 | - | 4.99 | 103,642 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,631 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,812 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,951 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,923 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,676 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,125 |
| Countries in the Alps | 0 | - | 4.87 | 118,966 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,979 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,122 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,168 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,123 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,387 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,586 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,987 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,512 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,309 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,951 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,829 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,668 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,920 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,017 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,135 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,729 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,411 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,831 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,275 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,481 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,611 |
| Largest Countries By Category | 0 | - | 4.97 | 159,079 |
| Countries by Countries | 0 | - | 4.97 | 63,799 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,431 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,448 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,221 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,005 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 147,055 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 83,267 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,333 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 146,607 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 117,597 |
| Flags with the Most Stars | 0 | - | 4.91 | 138,198 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 63,341 |
| Flags that are Red & White Only | 0 | - | 4.97 | 165,801 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 147,571 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 77,897 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 48,565 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 69,488 |
| Pixelated World Map | 0 | - | 5.00 | 144,262 |
| Country Flags with the Most Red | 0 | - | 4.98 | 121,542 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 93,433 |
| Country Flags with the Most Green | 0 | - | 4.96 | 100,479 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,549 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 100,183 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,533 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,787 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,869 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 32,842 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 73,128 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,681 |
| World Coats of Arms | 0 | - | 4.99 | 65,313 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,857 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,302 |
| Country Flags With Blue Removed | 0 | - | 4.89 | 45,094 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,573 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,029 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,337 |
| Island Countries | 0 | - | 4.99 | 712,998 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,443 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 910,211 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,815 |
| Every Country Shape | 0 | - | 5.00 | 472,406 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,102 |
| Northernmost Countries | 0 | - | 4.99 | 364,573 |
| Countries of South America | 0 | - | 5.00 | 934,210 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,416 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,842 |
| "Land" Countries | 0 | - | 4.98 | 338,978 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,909 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,279 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,479 |
| Countries with Megacities | 0 | - | 4.99 | 267,813 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,131 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,333 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,101 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,461 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,428 |
| Countries by Official Language | 0 | - | 4.95 | 196,207 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,928 |
| Countries in their Native Language | 0 | - | 4.99 | 199,949 |
| Independence from Whom | 0 | - | 4.99 | 213,394 |
| Subdivisions by Country | 0 | - | 4.87 | 50,664 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,653 |
| Megadiverse Countries | 0 | - | 4.96 | 148,938 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,130 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,573 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,927 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 139,647 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,802 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,257 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,465 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,924 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,273 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,622 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,162 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,286 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,756 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,483 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,504 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,216 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,637 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,972 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,714 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,593 |
| World Map Quiz | 0 | - | 4.81 | 65,923 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,813 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,668 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 227,044 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 165,405 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 40,316 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 34,673 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 105,253 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 112,229 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 123,093 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 109,025 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 81,202 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,729 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 86,452 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,503 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,229 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,702 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,919 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,542 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,660 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,846 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,762 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,937 |
| Widest Countries East to West | 0 | - | 4.92 | 130,846 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,627 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,397 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,560 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,156 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,103 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,610 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,534 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,922 |
| Countries with Double Letters | 0 | - | 4.96 | 97,611 |
| Countries that End in N | 0 | - | 4.95 | 172,619 |
| Countries with Five Letters | 0 | - | 4.96 | 284,623 |
| Countries with Six Letters | 0 | - | 4.94 | 214,946 |
| Countries with W | 0 | - | 4.96 | 161,299 |
| Countries with Z | 0 | - | 4.98 | 292,983 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,661 |
| Countries That End in U | 0 | - | 4.95 | 121,385 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,418 |
| Countries that End in O | 0 | - | 4.92 | 160,369 |
| Countries that End in R | 0 | - | 4.87 | 119,276 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,060 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,143 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,514 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,185 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,733 |
| Countries That End in Y | 0 | - | 4.91 | 186,174 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,237 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,413 |
| Countries that End in I | 0 | - | 4.94 | 135,422 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,240 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,143 |
| Countries That End in NIA | 0 | - | 4.92 | 110,158 |
| Countries That End in BIA | 0 | - | 4.93 | 149,733 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,928 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,900 |
| Countries That End in RIA | 0 | - | 4.93 | 127,143 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,542 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,931 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,385 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,847 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,401 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,919 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,454 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,604 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,049 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,730 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,607 |
