| Countries of the World Quiz | 0 | - | 5.00 | 46,879,371 |
| Landlocked Countries | 0 | - | 4.99 | 413,162 |
| Countries with Four Letters | 0 | - | 4.99 | 418,264 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,712,490 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,385 |
| Himalayan Countries | 0 | - | 4.95 | 135,160 |
| Andean Countries | 0 | - | 4.94 | 82,732 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,148 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,082 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,819 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,513 |
| Danube Countries | 0 | - | 4.97 | 71,032 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,695 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,487 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,366 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,282 |
| European Landlocked Countries | 0 | - | 4.99 | 145,701 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,111 |
| Countries with the Most Species | 0 | - | 4.99 | 95,215 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,261 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,189 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,351 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,928 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,541 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,901 |
| Countries in the Alps | 0 | - | 4.87 | 116,744 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,513 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,158 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,972 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,366 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,098 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,958 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,188 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,510 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,712 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,886 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,008 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,179 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,014 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,397 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,702 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 144,269 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 81,921 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,418 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 142,575 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 114,061 |
| Flags with the Most Stars | 0 | - | 4.91 | 134,694 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,709 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,963 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,595 |
| Flags that are Red & White Only | 0 | - | 4.97 | 158,335 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 144,476 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,220 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 73,710 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,722 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,005 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,475 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,567 |
| Largest Countries By Category | 0 | - | 4.97 | 156,677 |
| Countries by Countries | 0 | - | 4.96 | 62,211 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 46,521 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 67,533 |
| Pixelated World Map | 0 | - | 5.00 | 142,347 |
| Country Flags with the Most Red | 0 | - | 4.98 | 119,264 |
| Country Flags with the Most Blue | 0 | - | 4.88 | 91,641 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,298 |
| Country Flags with the Most Green | 0 | - | 4.96 | 98,719 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 98,510 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,948 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 49,634 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 98,335 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 79,637 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 64,686 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 43,910 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,707 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,337 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,259 |
| World Coats of Arms | 0 | - | 4.99 | 63,808 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,823 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,571 |
| Every Country Shape | 0 | - | 5.00 | 458,364 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,631 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,412 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,992 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 138,852 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,001 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,588 |
| Country Flags With Blue Removed | 0 | - | 4.93 | 43,721 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,348 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,961 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,328 |
| Island Countries | 0 | - | 4.99 | 707,398 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,816 |
| Northernmost Countries | 0 | - | 4.99 | 357,448 |
| Countries of South America | 0 | - | 5.00 | 913,937 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,309 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,472 |
| "Land" Countries | 0 | - | 4.98 | 333,510 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,316 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,176 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 136,886 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,931 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,970 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 30,504 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,124 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,044 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 160,966 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 34,233 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 103,255 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 110,589 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,175 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,239 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 79,976 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,507 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 84,983 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 234,658 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,677 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,960 |
| Countries with Megacities | 0 | - | 4.99 | 246,413 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,874 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,776 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,330 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,731 |
| Countries by Official Language | 0 | - | 4.95 | 192,665 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,986 |
| Countries in their Native Language | 0 | - | 4.99 | 196,530 |
| Independence from Whom | 0 | - | 4.99 | 209,560 |
| Subdivisions by Country | 0 | - | 4.86 | 50,043 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,645 |
| Megadiverse Countries | 0 | - | 4.97 | 133,852 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,708 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,899 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,396 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,847 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,583 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,965 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,670 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,097 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,197 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,728 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,459 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,385 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,458 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,476 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,638 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,997 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,420 |
| World Map Quiz | 0 | - | 4.81 | 63,420 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,269 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,229 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,922 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,885 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,592 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,809 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,008 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,213 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,906 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,290 |
| Widest Countries East to West | 0 | - | 4.92 | 128,556 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,201 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,145 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,539 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,652 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,561 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,981 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,042 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,557 |
| Countries with Double Letters | 0 | - | 4.97 | 93,288 |
| Countries that End in N | 0 | - | 4.94 | 156,343 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,563 |
| Countries with Six Letters | 0 | - | 4.93 | 210,255 |
| Countries with W | 0 | - | 4.97 | 158,156 |
| Countries with Z | 0 | - | 4.98 | 287,734 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,470 |
| Countries That End in U | 0 | - | 4.95 | 119,477 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,440 |
| Countries that End in O | 0 | - | 4.92 | 158,506 |
| Countries that End in R | 0 | - | 4.87 | 118,238 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,833 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,921 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,237 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,425 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,734 |
| Countries That End in Y | 0 | - | 4.90 | 185,174 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,257 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,595 |
| Countries that End in I | 0 | - | 4.94 | 134,358 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,094 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,163 |
| Countries That End in NIA | 0 | - | 4.92 | 108,955 |
| Countries That End in BIA | 0 | - | 4.92 | 147,646 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,007 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,436 |
| Countries That End in RIA | 0 | - | 4.93 | 126,041 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,958 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,071 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,474 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,853 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,298 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,900 |
