| Countries of the World Quiz | 0 | - | 5.00 | 46,973,229 |
| Landlocked Countries | 0 | - | 4.99 | 414,284 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,722,252 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,861 |
| Himalayan Countries | 0 | - | 4.95 | 135,593 |
| Andean Countries | 0 | - | 4.94 | 82,951 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,314 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,357 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,017 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,686 |
| Danube Countries | 0 | - | 4.97 | 71,139 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,845 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,606 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,619 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,532 |
| European Landlocked Countries | 0 | - | 4.99 | 145,837 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,305 |
| Countries with the Most Species | 0 | - | 4.99 | 95,283 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,449 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,223 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,391 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,992 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,631 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,004 |
| Countries in the Alps | 0 | - | 4.86 | 116,930 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,641 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,383 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,068 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,477 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,253 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,062 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,589 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,664 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,818 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,532 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,120 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,218 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,081 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,504 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,803 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,496 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,019 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,473 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 143,153 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,587 |
| Flags with the Most Stars | 0 | - | 4.91 | 135,124 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,795 |
| Country Flags with the Southern Cross | 0 | - | 4.83 | 61,505 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,201 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,712 |
| Flags that are Red & White Only | 0 | - | 4.97 | 162,431 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 144,850 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,290 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 74,559 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,865 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,633 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,889 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,648 |
| Largest Countries By Category | 0 | - | 4.97 | 156,869 |
| Countries by Countries | 0 | - | 4.96 | 62,326 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,766 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,779 |
| Pixelated World Map | 0 | - | 5.00 | 142,538 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,511 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 91,833 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,511 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,918 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,682 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,986 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,735 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,665 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,946 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,088 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,271 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,832 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,409 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,301 |
| World Coats of Arms | 0 | - | 4.99 | 63,938 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,544 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,075 |
| Every Country Shape | 0 | - | 5.00 | 459,562 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,093 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,664 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,860 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,808 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,366 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,182 |
| Island Countries | 0 | - | 4.99 | 707,870 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,350 |
| Northernmost Countries | 0 | - | 4.99 | 358,071 |
| Countries of South America | 0 | - | 5.00 | 915,935 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,968 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,634 |
| "Land" Countries | 0 | - | 4.98 | 333,823 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,511 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,501 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 137,159 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,166 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,162 |
| Countries by Partial Flag Images #7 | 0 | - | 4.90 | 30,948 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,665 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,426 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 162,768 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 34,640 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 103,425 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 110,741 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,349 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,380 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,093 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,638 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,116 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,738 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,598 |
| Countries with Megacities | 0 | - | 4.99 | 247,512 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,438 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,186 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,855 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,115 |
| Countries by Official Language | 0 | - | 4.95 | 192,915 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,328 |
| Countries in their Native Language | 0 | - | 4.99 | 196,768 |
| Independence from Whom | 0 | - | 4.99 | 209,866 |
| Subdivisions by Country | 0 | - | 4.86 | 50,099 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,883 |
| Megadiverse Countries | 0 | - | 4.97 | 133,960 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,936 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,950 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,464 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,875 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,745 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,046 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,166 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,212 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,244 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,759 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,723 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,453 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,542 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,533 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,727 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,055 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,773 |
| World Map Quiz | 0 | - | 4.81 | 63,633 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,402 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,500 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,286 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,034 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,952 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,941 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,131 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,353 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,985 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,392 |
| Widest Countries East to West | 0 | - | 4.92 | 128,725 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,233 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,313 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,600 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,744 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,693 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,117 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 70,576 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,602 |
| Countries with Double Letters | 0 | - | 4.96 | 93,504 |
| Countries that End in N | 0 | - | 4.94 | 156,994 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,817 |
| Countries with Six Letters | 0 | - | 4.93 | 210,493 |
| Countries with W | 0 | - | 4.97 | 158,310 |
| Countries with Z | 0 | - | 4.98 | 288,026 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,629 |
| Countries That End in U | 0 | - | 4.95 | 119,555 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,703 |
| Countries that End in O | 0 | - | 4.92 | 158,594 |
| Countries that End in R | 0 | - | 4.87 | 118,310 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,881 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,219 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,420 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,555 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,101 |
| Countries That End in Y | 0 | - | 4.90 | 185,239 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,479 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,776 |
| Countries that End in I | 0 | - | 4.94 | 134,477 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,306 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,238 |
| Countries That End in NIA | 0 | - | 4.92 | 109,057 |
| Countries That End in BIA | 0 | - | 4.92 | 147,768 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,144 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,552 |
| Countries That End in RIA | 0 | - | 4.93 | 126,130 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,081 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,358 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,573 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,947 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,439 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,962 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,186 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,709 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,573 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,845 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,885 |
