| Landlocked Countries | 0 | - | 4.99 | 427,216 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,966,570 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,899 |
| Himalayan Countries | 0 | - | 4.93 | 140,809 |
| Andean Countries | 0 | - | 4.94 | 85,795 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,911 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,479 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,460 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,686 |
| Danube Countries | 0 | - | 4.97 | 72,548 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,796 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,971 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,433 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,910 |
| European Landlocked Countries | 0 | - | 4.99 | 147,736 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,531 |
| Countries with the Most Species | 0 | - | 4.99 | 103,643 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,634 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,812 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,952 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,923 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,678 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,125 |
| Countries in the Alps | 0 | - | 4.87 | 118,968 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,980 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,126 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,170 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,126 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,389 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,588 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,989 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,512 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,310 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,953 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,829 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,670 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,924 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,019 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,143 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,730 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,417 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,832 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,284 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,487 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,614 |
| Largest Countries By Category | 0 | - | 4.97 | 159,084 |
| Countries by Countries | 0 | - | 4.97 | 63,800 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,436 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,448 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,226 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,131 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 147,058 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 83,269 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,333 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 146,612 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 117,603 |
| Flags with the Most Stars | 0 | - | 4.91 | 138,206 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 63,348 |
| Flags that are Red & White Only | 0 | - | 4.97 | 165,808 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 147,578 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 77,901 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 48,570 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 69,490 |
| Pixelated World Map | 0 | - | 5.00 | 144,263 |
| Country Flags with the Most Red | 0 | - | 4.98 | 121,547 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 93,439 |
| Country Flags with the Most Green | 0 | - | 4.96 | 100,484 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,551 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 100,185 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,537 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,790 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,871 |
| Countries by Partial Flag Images #7 | 0 | - | 4.89 | 32,843 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 73,130 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,683 |
| World Coats of Arms | 0 | - | 4.99 | 65,313 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,859 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,302 |
| Country Flags With Blue Removed | 0 | - | 4.89 | 45,094 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,586 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,032 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,341 |
| Island Countries | 0 | - | 4.99 | 713,002 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,444 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 910,221 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,820 |
| Every Country Shape | 0 | - | 5.00 | 472,425 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,123 |
| Northernmost Countries | 0 | - | 4.99 | 364,584 |
| Countries of South America | 0 | - | 5.00 | 934,238 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,449 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,902 |
| "Land" Countries | 0 | - | 4.98 | 338,987 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,953 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,280 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,489 |
| Countries with Megacities | 0 | - | 4.99 | 267,828 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,137 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,334 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,104 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,466 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,431 |
| Countries by Official Language | 0 | - | 4.95 | 196,213 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,938 |
| Countries in their Native Language | 0 | - | 4.99 | 199,951 |
| Independence from Whom | 0 | - | 4.99 | 213,397 |
| Subdivisions by Country | 0 | - | 4.87 | 50,664 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,659 |
| Megadiverse Countries | 0 | - | 4.96 | 148,968 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,133 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,575 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,930 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 139,649 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,803 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,257 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,465 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,273 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,623 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,163 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,286 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,761 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,487 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,506 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,216 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,638 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,974 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,718 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,594 |
| World Map Quiz | 0 | - | 4.81 | 65,924 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,814 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,670 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 227,047 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 165,408 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 40,318 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 34,683 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 105,258 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 112,234 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 123,097 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 109,028 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 81,204 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,735 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 86,455 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,507 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,232 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,704 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,925 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,547 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,662 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,848 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,764 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,938 |
| Widest Countries East to West | 0 | - | 4.92 | 130,849 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,627 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,398 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,560 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,158 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,106 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,613 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,534 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,922 |
| Countries with Double Letters | 0 | - | 4.96 | 97,617 |
| Countries that End in N | 0 | - | 4.95 | 172,623 |
| Countries with Five Letters | 0 | - | 4.96 | 284,627 |
| Countries with Six Letters | 0 | - | 4.94 | 214,952 |
| Countries with W | 0 | - | 4.96 | 161,303 |
| Countries with Z | 0 | - | 4.98 | 292,992 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,664 |
| Countries That End in U | 0 | - | 4.95 | 121,389 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,423 |
| Countries that End in O | 0 | - | 4.92 | 160,369 |
| Countries that End in R | 0 | - | 4.87 | 119,276 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,061 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,143 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,609 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,191 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,748 |
| Countries That End in Y | 0 | - | 4.91 | 186,174 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,257 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,419 |
| Countries that End in I | 0 | - | 4.94 | 135,422 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,250 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,146 |
| Countries That End in NIA | 0 | - | 4.92 | 110,158 |
| Countries That End in BIA | 0 | - | 4.93 | 149,734 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,930 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,905 |
| Countries That End in RIA | 0 | - | 4.93 | 127,144 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,544 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,934 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,386 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,849 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,401 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,919 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,457 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,605 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,052 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,732 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,610 |
