| Landlocked Countries | 0 | - | 4.99 | 426,435 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,914,486 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,512 |
| Himalayan Countries | 0 | - | 4.93 | 140,452 |
| Andean Countries | 0 | - | 4.94 | 85,591 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,736 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,185 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,298 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,537 |
| Danube Countries | 0 | - | 4.97 | 72,464 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,672 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,895 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,244 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,718 |
| European Landlocked Countries | 0 | - | 4.99 | 147,658 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,383 |
| Countries with the Most Species | 0 | - | 4.99 | 103,599 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,493 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,788 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,910 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,871 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,612 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,063 |
| Countries in the Alps | 0 | - | 4.87 | 118,844 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,766 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,976 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,006 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,080 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,025 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,311 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,466 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,909 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,459 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,224 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,907 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,774 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,598 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,841 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,939 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,965 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,653 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,304 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,732 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,910 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,273 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,547 |
| Largest Countries By Category | 0 | - | 4.97 | 158,941 |
| Countries by Countries | 0 | - | 4.96 | 63,699 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,320 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,422 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,143 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,807,384 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,922 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 83,213 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,292 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 146,440 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 117,437 |
| Flags with the Most Stars | 0 | - | 4.91 | 138,012 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 63,251 |
| Flags that are Red & White Only | 0 | - | 4.97 | 165,689 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 147,408 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 77,756 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 48,470 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 69,405 |
| Pixelated World Map | 0 | - | 5.00 | 144,148 |
| Country Flags with the Most Red | 0 | - | 4.98 | 121,420 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 93,343 |
| Country Flags with the Most Green | 0 | - | 4.96 | 100,409 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,519 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 100,109 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,458 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,707 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,779 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,748 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 73,081 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,656 |
| World Coats of Arms | 0 | - | 4.99 | 65,215 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,809 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,261 |
| Country Flags With Blue Removed | 0 | - | 4.89 | 45,047 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,914 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,822 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,952 |
| Island Countries | 0 | - | 4.99 | 712,727 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,239 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,922 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,643 |
| Every Country Shape | 0 | - | 5.00 | 471,608 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,264 |
| Northernmost Countries | 0 | - | 4.99 | 364,238 |
| Countries of South America | 0 | - | 5.00 | 933,307 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,292 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,755 |
| "Land" Countries | 0 | - | 4.98 | 338,522 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,040 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,245 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,296 |
| Countries with Megacities | 0 | - | 4.99 | 267,402 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,970 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,219 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,018 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,297 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,323 |
| Countries by Official Language | 0 | - | 4.95 | 196,095 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,757 |
| Countries in their Native Language | 0 | - | 4.99 | 199,824 |
| Independence from Whom | 0 | - | 4.99 | 213,197 |
| Subdivisions by Country | 0 | - | 4.87 | 50,640 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,549 |
| Megadiverse Countries | 0 | - | 4.96 | 142,257 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,019 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,553 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,769 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 139,511 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,744 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,235 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,337 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,883 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,169 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,588 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,114 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,272 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,624 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,422 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,462 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,170 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,602 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,909 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,498 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,529 |
| World Map Quiz | 0 | - | 4.81 | 65,807 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,750 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,535 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,908 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 165,302 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 40,090 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 34,390 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 105,187 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 112,172 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 123,016 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,969 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 81,159 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,675 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 86,408 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,359 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,148 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,609 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,708 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,481 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,595 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,786 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,717 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,832 |
| Widest Countries East to West | 0 | - | 4.92 | 130,773 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,613 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,297 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,533 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,093 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,031 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,524 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,515 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,905 |
| Countries with Double Letters | 0 | - | 4.96 | 97,203 |
| Countries that End in N | 0 | - | 4.95 | 172,217 |
| Countries with Five Letters | 0 | - | 4.96 | 284,150 |
| Countries with Six Letters | 0 | - | 4.94 | 214,613 |
| Countries with W | 0 | - | 4.96 | 161,040 |
| Countries with Z | 0 | - | 4.98 | 292,581 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,376 |
| Countries That End in U | 0 | - | 4.95 | 121,240 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,185 |
| Countries that End in O | 0 | - | 4.92 | 160,260 |
| Countries that End in R | 0 | - | 4.87 | 119,213 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,976 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,950 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,218 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,874 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,803 |
| Countries That End in Y | 0 | - | 4.91 | 186,110 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,527 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,322 |
| Countries that End in I | 0 | - | 4.94 | 135,351 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,688 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,087 |
| Countries That End in NIA | 0 | - | 4.92 | 110,094 |
| Countries That End in BIA | 0 | - | 4.93 | 149,636 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,722 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,809 |
| Countries That End in RIA | 0 | - | 4.93 | 127,087 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,441 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,721 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,253 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,701 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,249 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,837 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,362 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,554 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,956 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,669 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,481 |
