| Countries of the World Quiz | 0 | - | 5.00 | 46,975,748 |
| Landlocked Countries | 0 | - | 4.99 | 414,308 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,722,538 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,872 |
| Himalayan Countries | 0 | - | 4.95 | 135,603 |
| Andean Countries | 0 | - | 4.94 | 82,956 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,322 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,360 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,024 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,694 |
| Danube Countries | 0 | - | 4.97 | 71,145 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,848 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,608 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,624 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,542 |
| European Landlocked Countries | 0 | - | 4.99 | 145,842 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,307 |
| Countries with the Most Species | 0 | - | 4.99 | 95,285 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,456 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,223 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,392 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,995 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,634 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,007 |
| Countries in the Alps | 0 | - | 4.86 | 116,938 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,642 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,389 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,073 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,480 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,257 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,065 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,601 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,666 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,820 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,539 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,123 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,218 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,085 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,508 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,804 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,507 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,023 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,475 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 143,170 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,601 |
| Flags with the Most Stars | 0 | - | 4.91 | 135,136 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,798 |
| Country Flags with the Southern Cross | 0 | - | 4.83 | 61,507 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,212 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,714 |
| Flags that are Red & White Only | 0 | - | 4.97 | 162,473 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 144,857 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,291 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 74,572 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,870 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,659 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,900 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,650 |
| Largest Countries By Category | 0 | - | 4.97 | 156,874 |
| Countries by Countries | 0 | - | 4.96 | 62,328 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,772 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,784 |
| Pixelated World Map | 0 | - | 5.00 | 142,542 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,518 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 91,837 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,516 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,924 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,683 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,988 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,737 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,674 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,951 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,100 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 44,279 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,838 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,412 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,301 |
| World Coats of Arms | 0 | - | 4.99 | 63,944 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,555 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,080 |
| Every Country Shape | 0 | - | 5.00 | 459,592 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,094 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,667 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,865 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,840 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,377 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,189 |
| Island Countries | 0 | - | 4.99 | 707,882 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,407 |
| Northernmost Countries | 0 | - | 4.99 | 358,093 |
| Countries of South America | 0 | - | 5.00 | 915,988 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,047 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,752 |
| "Land" Countries | 0 | - | 4.98 | 333,830 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,515 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,506 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 137,161 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,265 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,169 |
| Countries by Partial Flag Images #7 | 0 | - | 4.90 | 30,957 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,670 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,431 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 162,789 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 34,653 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 103,430 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 110,744 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,352 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,382 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,096 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,639 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,119 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,738 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,615 |
| Countries with Megacities | 0 | - | 4.99 | 247,533 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,450 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,195 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,861 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,121 |
| Countries by Official Language | 0 | - | 4.95 | 192,921 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,337 |
| Countries in their Native Language | 0 | - | 4.99 | 196,775 |
| Independence from Whom | 0 | - | 4.99 | 209,871 |
| Subdivisions by Country | 0 | - | 4.86 | 50,103 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,885 |
| Megadiverse Countries | 0 | - | 4.97 | 133,961 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,941 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,951 |
| 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 | 161,750 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,047 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,173 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,212 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,245 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,760 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,726 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,453 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,545 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,534 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,728 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,055 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,781 |
| 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 | 226,515 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,300 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,044 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,968 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,955 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,141 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,358 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,990 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,400 |
| Widest Countries East to West | 0 | - | 4.92 | 128,773 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,237 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,317 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,601 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,744 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,696 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,121 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 71,321 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,608 |
| Countries with Double Letters | 0 | - | 4.96 | 93,520 |
| Countries that End in N | 0 | - | 4.94 | 157,002 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,823 |
| Countries with Six Letters | 0 | - | 4.93 | 210,500 |
| Countries with W | 0 | - | 4.97 | 158,318 |
| Countries with Z | 0 | - | 4.98 | 288,034 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,635 |
| Countries That End in U | 0 | - | 4.95 | 119,560 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,708 |
| Countries that End in O | 0 | - | 4.92 | 158,597 |
| Countries that End in R | 0 | - | 4.87 | 118,312 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,882 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,224 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,423 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,559 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,102 |
| Countries That End in Y | 0 | - | 4.90 | 185,240 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,483 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,781 |
| Countries that End in I | 0 | - | 4.94 | 134,479 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,308 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,241 |
| Countries That End in NIA | 0 | - | 4.92 | 109,058 |
| Countries That End in BIA | 0 | - | 4.92 | 147,770 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,149 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,556 |
| Countries That End in RIA | 0 | - | 4.93 | 126,131 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,086 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,395 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,579 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,953 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,440 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,964 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,189 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,714 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,575 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,846 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,887 |
