| Landlocked Countries | 0 | - | 4.99 | 425,797 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,875,225 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,232 |
| Himalayan Countries | 0 | - | 4.93 | 140,223 |
| Andean Countries | 0 | - | 4.94 | 85,442 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,590 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,978 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,149 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,423 |
| Danube Countries | 0 | - | 4.97 | 72,382 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,583 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,833 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,112 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,599 |
| European Landlocked Countries | 0 | - | 4.99 | 147,599 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,295 |
| Countries with the Most Species | 0 | - | 4.99 | 103,559 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,400 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,775 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,885 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,838 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,575 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,011 |
| Countries in the Alps | 0 | - | 4.87 | 118,769 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,618 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,851 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,960 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,022 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,945 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,247 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,394 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,858 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,418 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,177 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,865 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,742 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,555 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,788 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,885 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,826 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,605 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 69,943 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,662 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,695 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,136 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,500 |
| Largest Countries By Category | 0 | - | 4.97 | 158,861 |
| Countries by Countries | 0 | - | 4.96 | 63,638 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,257 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,400 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,102 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,804,133 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,859 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 83,182 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,256 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 146,340 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 117,326 |
| Flags with the Most Stars | 0 | - | 4.91 | 137,892 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 63,188 |
| Flags that are Red & White Only | 0 | - | 4.97 | 165,602 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 147,315 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 77,647 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 48,394 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 69,336 |
| Pixelated World Map | 0 | - | 5.00 | 144,106 |
| Country Flags with the Most Red | 0 | - | 4.98 | 121,344 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 93,269 |
| Country Flags with the Most Green | 0 | - | 4.96 | 100,340 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,493 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 100,071 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,411 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,654 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,735 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,693 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 73,061 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,644 |
| World Coats of Arms | 0 | - | 4.99 | 65,141 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,791 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,234 |
| Country Flags With Blue Removed | 0 | - | 4.89 | 45,008 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,372 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,677 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,668 |
| Island Countries | 0 | - | 4.99 | 712,549 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,092 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,718 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,487 |
| Every Country Shape | 0 | - | 5.00 | 471,057 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,664 |
| Northernmost Countries | 0 | - | 4.99 | 363,972 |
| Countries of South America | 0 | - | 5.00 | 932,611 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,261 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,079 |
| "Land" Countries | 0 | - | 4.98 | 338,373 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,554 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,227 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,140 |
| Countries with Megacities | 0 | - | 4.99 | 267,084 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,831 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,128 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,977 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,147 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,233 |
| Countries by Official Language | 0 | - | 4.95 | 195,987 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,619 |
| Countries in their Native Language | 0 | - | 4.99 | 199,732 |
| Independence from Whom | 0 | - | 4.99 | 213,055 |
| Subdivisions by Country | 0 | - | 4.87 | 50,616 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,435 |
| Megadiverse Countries | 0 | - | 4.96 | 135,277 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,938 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,541 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,662 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 139,407 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,655 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,228 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,997 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,850 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,109 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,569 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,041 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,256 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,521 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,376 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,442 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,142 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,580 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,844 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,349 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,486 |
| World Map Quiz | 0 | - | 4.81 | 65,724 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,713 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,410 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,796 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 165,213 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 39,929 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 34,188 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 105,142 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 112,120 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 122,974 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,921 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 81,131 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,640 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 86,380 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,243 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,079 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,561 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,562 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,430 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,528 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,727 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,688 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,710 |
| Widest Countries East to West | 0 | - | 4.92 | 130,455 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,598 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,255 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,517 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,063 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,967 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,485 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,502 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,890 |
| Countries with Double Letters | 0 | - | 4.96 | 97,073 |
| Countries that End in N | 0 | - | 4.95 | 171,930 |
| Countries with Five Letters | 0 | - | 4.96 | 283,762 |
| Countries with Six Letters | 0 | - | 4.94 | 214,467 |
| Countries with W | 0 | - | 4.96 | 160,931 |
| Countries with Z | 0 | - | 4.98 | 292,444 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,284 |
| Countries That End in U | 0 | - | 4.95 | 121,191 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,104 |
| Countries that End in O | 0 | - | 4.92 | 160,216 |
| Countries that End in R | 0 | - | 4.87 | 119,183 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,937 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,828 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,152 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,827 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,759 |
| Countries That End in Y | 0 | - | 4.91 | 186,089 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,455 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,273 |
| Countries that End in I | 0 | - | 4.94 | 135,314 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,621 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,059 |
| Countries That End in NIA | 0 | - | 4.92 | 110,052 |
| Countries That End in BIA | 0 | - | 4.93 | 149,574 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,539 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,772 |
| Countries That End in RIA | 0 | - | 4.93 | 127,053 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,392 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,590 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,184 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,625 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,174 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,808 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,328 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,537 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,904 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,652 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,419 |
