| Landlocked Countries | 0 | - | 4.99 | 422,943 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,658,302 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,993 |
| Himalayan Countries | 0 | - | 4.95 | 139,153 |
| Andean Countries | 0 | - | 4.93 | 84,863 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,078 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,212 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,663 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,971 |
| Danube Countries | 0 | - | 4.97 | 72,128 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,179 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,532 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,518 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,022 |
| European Landlocked Countries | 0 | - | 4.99 | 147,265 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,823 |
| Countries with the Most Species | 0 | - | 4.99 | 103,342 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,951 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,646 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,765 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,612 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,355 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,778 |
| Countries in the Alps | 0 | - | 4.87 | 118,353 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,718 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,267 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,751 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,701 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,624 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,034 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,806 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,600 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,246 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,946 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,717 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,586 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,315 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,559 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,628 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,142 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,395 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,702 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,238 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,461 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,408 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,308 |
| Largest Countries By Category | 0 | - | 4.97 | 158,387 |
| Countries by Countries | 0 | - | 4.96 | 63,354 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,832 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,321 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,780 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,785,402 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,348 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 82,934 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,104 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 145,418 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,573 |
| Flags with the Most Stars | 0 | - | 4.91 | 137,129 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,690 |
| Flags that are Red & White Only | 0 | - | 4.97 | 164,915 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 146,599 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 76,832 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 47,933 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 68,866 |
| Pixelated World Map | 0 | - | 5.00 | 143,760 |
| Country Flags with the Most Red | 0 | - | 4.98 | 120,875 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 92,864 |
| Country Flags with the Most Green | 0 | - | 4.96 | 99,952 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,282 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,730 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,082 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,295 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,362 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,260 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 72,905 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,564 |
| World Coats of Arms | 0 | - | 4.99 | 64,810 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,617 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,063 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,709 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,454 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,808 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,929 |
| Island Countries | 0 | - | 4.99 | 711,388 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,239 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,437 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,630 |
| Every Country Shape | 0 | - | 5.00 | 468,438 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,075 |
| Northernmost Countries | 0 | - | 4.99 | 362,443 |
| Countries of South America | 0 | - | 5.00 | 928,698 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,612 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,292 |
| "Land" Countries | 0 | - | 4.98 | 337,608 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,046 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,089 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,176 |
| Countries with Megacities | 0 | - | 4.99 | 265,262 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,005 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,626 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,617 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,260 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,699 |
| Countries by Official Language | 0 | - | 4.95 | 195,453 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,650 |
| Countries in their Native Language | 0 | - | 4.99 | 199,224 |
| Independence from Whom | 0 | - | 4.99 | 212,322 |
| Subdivisions by Country | 0 | - | 4.87 | 50,478 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,896 |
| Megadiverse Countries | 0 | - | 4.96 | 135,091 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,256 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,407 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,989 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 138,866 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,291 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,139 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,262 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,655 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,605 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,415 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,704 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,180 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,888 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,946 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,263 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,010 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,418 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,543 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,509 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,155 |
| World Map Quiz | 0 | - | 4.81 | 65,237 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,444 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,613 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,189 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 164,697 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 38,960 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 33,018 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 104,807 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 111,834 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 122,472 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,610 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,909 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,423 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 86,117 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,291 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,395 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,103 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,541 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,004 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,113 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,389 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,494 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,645 |
| Widest Countries East to West | 0 | - | 4.92 | 129,743 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,478 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,502 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,268 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,831 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,690 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,962 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,407 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,819 |
| Countries with Double Letters | 0 | - | 4.96 | 96,455 |
| Countries that End in N | 0 | - | 4.95 | 171,339 |
| Countries with Five Letters | 0 | - | 4.96 | 282,876 |
| Countries with Six Letters | 0 | - | 4.94 | 213,797 |
| Countries with W | 0 | - | 4.96 | 160,485 |
| Countries with Z | 0 | - | 4.98 | 291,701 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,847 |
| Countries That End in U | 0 | - | 4.95 | 120,932 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,616 |
| Countries that End in O | 0 | - | 4.92 | 159,586 |
| Countries that End in R | 0 | - | 4.87 | 119,017 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,776 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,296 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,802 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,573 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,479 |
| Countries That End in Y | 0 | - | 4.91 | 185,937 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,051 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,976 |
| Countries that End in I | 0 | - | 4.94 | 135,163 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,236 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,874 |
| Countries That End in NIA | 0 | - | 4.92 | 109,852 |
| Countries That End in BIA | 0 | - | 4.93 | 149,302 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,210 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,514 |
| Countries That End in RIA | 0 | - | 4.93 | 126,876 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,100 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,868 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,839 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,268 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,816 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,635 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,104 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,466 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,620 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,483 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,087 |
