| Landlocked Countries | 0 | - | 4.99 | 414,430 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,987,009 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,931 |
| Himalayan Countries | 0 | - | 4.95 | 135,642 |
| Andean Countries | 0 | - | 4.94 | 82,991 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,345 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,397 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,045 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,717 |
| Danube Countries | 0 | - | 4.97 | 71,159 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,874 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,621 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,660 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,561 |
| European Landlocked Countries | 0 | - | 4.99 | 145,862 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,333 |
| Countries with the Most Species | 0 | - | 4.99 | 95,290 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,480 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,228 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,396 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,006 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,646 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,011 |
| Countries in the Alps | 0 | - | 4.86 | 116,957 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,659 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,423 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,083 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,491 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,270 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,075 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,673 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,827 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,563 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,132 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,225 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,090 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,518 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,813 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,816 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,243 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,724 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,303 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,878 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,746 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,937 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,674 |
| Largest Countries By Category | 0 | - | 4.97 | 156,891 |
| Countries by Countries | 0 | - | 4.96 | 62,341 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,529 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,994 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,843 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,723,444 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,532 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,030 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,486 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 143,222 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,645 |
| Flags with the Most Stars | 0 | - | 4.91 | 135,170 |
| Country Flags with the Southern Cross | 0 | - | 4.83 | 61,526 |
| Flags that are Red & White Only | 0 | - | 4.97 | 162,591 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 144,879 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 74,615 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,794 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,791 |
| Pixelated World Map | 0 | - | 5.00 | 142,552 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,531 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 91,842 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,932 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,693 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,744 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,709 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,979 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,130 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,311 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,415 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,304 |
| World Coats of Arms | 0 | - | 4.99 | 63,945 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,098 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,673 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,879 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,960 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,421 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,236 |
| Island Countries | 0 | - | 4.99 | 707,934 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,635 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,598 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,106 |
| Every Country Shape | 0 | - | 5.00 | 459,728 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,569 |
| Northernmost Countries | 0 | - | 4.99 | 358,165 |
| Countries of South America | 0 | - | 5.00 | 916,173 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,308 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,224 |
| "Land" Countries | 0 | - | 4.98 | 333,873 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,626 |
| Countries by Partial Flag Images #7 | 0 | - | 4.90 | 31,001 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,744 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,644 |
| Countries with Megacities | 0 | - | 4.99 | 247,617 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,496 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,213 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,531 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,897 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,141 |
| Countries by Official Language | 0 | - | 4.95 | 192,948 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,374 |
| Countries in their Native Language | 0 | - | 4.99 | 196,801 |
| Independence from Whom | 0 | - | 4.99 | 209,906 |
| Subdivisions by Country | 0 | - | 4.86 | 50,104 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,901 |
| Megadiverse Countries | 0 | - | 4.97 | 133,966 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,960 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,957 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,530 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 137,180 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,468 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,877 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,768 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,057 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,191 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,222 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,254 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,761 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,742 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,457 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,557 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,541 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,731 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,065 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,824 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,182 |
| World Map Quiz | 0 | - | 4.81 | 63,659 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,416 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,689 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,453 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 162,856 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 34,699 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 103,445 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 110,757 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,370 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,395 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,105 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,647 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,127 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,566 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,355 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,081 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,025 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,998 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,180 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,384 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,007 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,431 |
| Widest Countries East to West | 0 | - | 4.92 | 128,934 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,253 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,340 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,606 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,759 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,704 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,136 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 73,123 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,619 |
| Countries with Double Letters | 0 | - | 4.96 | 93,551 |
| Countries that End in N | 0 | - | 4.94 | 157,035 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,858 |
| Countries with Six Letters | 0 | - | 4.93 | 210,530 |
| Countries with W | 0 | - | 4.97 | 158,333 |
| Countries with Z | 0 | - | 4.98 | 288,061 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,653 |
| Countries That End in U | 0 | - | 4.95 | 119,580 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,735 |
| Countries that End in O | 0 | - | 4.92 | 158,612 |
| Countries that End in R | 0 | - | 4.87 | 118,328 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,895 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,263 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,451 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,571 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,117 |
| Countries That End in Y | 0 | - | 4.90 | 185,251 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,497 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,799 |
| Countries that End in I | 0 | - | 4.94 | 134,488 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,333 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,250 |
| Countries That End in NIA | 0 | - | 4.92 | 109,067 |
| Countries That End in BIA | 0 | - | 4.92 | 147,780 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,162 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,571 |
| Countries That End in RIA | 0 | - | 4.93 | 126,143 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,100 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,507 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,599 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,968 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,456 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,971 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,199 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,722 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,594 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,852 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,907 |
