| Landlocked Countries | 0 | - | 4.99 | 420,407 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,450,823 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,658 |
| Himalayan Countries | 0 | - | 4.95 | 138,054 |
| Andean Countries | 0 | - | 4.95 | 84,245 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,467 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,297 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,102 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,547 |
| Danube Countries | 0 | - | 4.97 | 71,821 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,771 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,216 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,949 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,391 |
| European Landlocked Countries | 0 | - | 4.99 | 146,954 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,360 |
| Countries with the Most Species | 0 | - | 4.99 | 103,077 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,520 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,496 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,656 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,434 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,112 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,498 |
| Countries in the Alps | 0 | - | 4.87 | 117,948 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,199 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,675 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,543 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,439 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,293 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,828 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,458 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,329 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,068 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,698 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,561 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,417 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,062 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,341 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,354 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,500 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,172 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,683 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,799 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,118 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,636 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,102 |
| Largest Countries By Category | 0 | - | 4.97 | 157,909 |
| Countries by Countries | 0 | - | 4.97 | 63,002 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,449 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,213 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,493 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,884 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 145,801 |
| Countries by Satellite Image #5 | 0 | - | 4.89 | 82,672 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 48,940 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 144,795 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,026 |
| Flags with the Most Stars | 0 | - | 4.91 | 136,491 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,321 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,402 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.93 | 146,072 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,206 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,575 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,557 |
| Pixelated World Map | 0 | - | 5.00 | 143,387 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,489 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,537 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,646 |
| Country Flags with the Most Orange | 0 | - | 4.96 | 99,419 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,116 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,444 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 80,771 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 65,978 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,076 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 31,901 |
| Countries by Coat of Arms #1 | 0 | - | 4.93 | 72,764 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,501 |
| World Coats of Arms | 0 | - | 4.99 | 64,511 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,471 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 35,949 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,461 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,203 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,015 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,171 |
| Island Countries | 0 | - | 4.99 | 710,349 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,412 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,095 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,725 |
| Every Country Shape | 0 | - | 5.00 | 465,326 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,741 |
| Northernmost Countries | 0 | - | 4.99 | 361,181 |
| Countries of South America | 0 | - | 5.00 | 924,952 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,854 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,590 |
| "Land" Countries | 0 | - | 4.98 | 336,212 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,392 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.93 | 30,960 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,440 |
| Countries with Megacities | 0 | - | 4.99 | 263,306 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,279 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,231 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,262 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,576 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,270 |
| Countries by Official Language | 0 | - | 4.95 | 194,919 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,930 |
| Countries in their Native Language | 0 | - | 4.99 | 198,444 |
| Independence from Whom | 0 | - | 4.99 | 211,689 |
| Subdivisions by Country | 0 | - | 4.86 | 50,357 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,968 |
| Megadiverse Countries | 0 | - | 4.96 | 134,872 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,777 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,252 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,186 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 138,228 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,841 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,058 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,898 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,473 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,205 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,933 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,559 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,038 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,325 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,789 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,089 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,863 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,251 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,410 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,636 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,863 |
| World Map Quiz | 0 | - | 4.81 | 64,847 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,183 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,916 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,513 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 164,152 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 36,789 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 104,462 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 111,504 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 122,154 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,309 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,656 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,183 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,880 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,769 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,082 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,821 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,750 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,707 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,840 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,002 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,347 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,424 |
| Widest Countries East to West | 0 | - | 4.92 | 129,493 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,156 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,059 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,634 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,402 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,696 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,307 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,763 |
| Countries with Double Letters | 0 | - | 4.97 | 95,379 |
| Countries that End in N | 0 | - | 4.95 | 170,412 |
| Countries with Five Letters | 0 | - | 4.96 | 281,335 |
| Countries with Six Letters | 0 | - | 4.94 | 212,829 |
| Countries with W | 0 | - | 4.97 | 159,724 |
| Countries with Z | 0 | - | 4.98 | 290,633 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,981 |
| Countries That End in U | 0 | - | 4.95 | 120,522 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,003 |
| Countries that End in O | 0 | - | 4.92 | 159,291 |
| Countries that End in R | 0 | - | 4.87 | 118,808 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,576 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,607 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,327 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,221 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,832 |
| Countries That End in Y | 0 | - | 4.91 | 185,728 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,535 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,605 |
| Countries that End in I | 0 | - | 4.94 | 134,957 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,728 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,671 |
| Countries That End in NIA | 0 | - | 4.92 | 109,629 |
| Countries That End in BIA | 0 | - | 4.93 | 148,983 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,882 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,208 |
| Countries That End in RIA | 0 | - | 4.93 | 126,649 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,777 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,098 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,414 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,805 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,341 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,415 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,801 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,358 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,299 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,288 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,717 |
