| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,631,782 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 722,541 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,284 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,863 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,759 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,944 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,887 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,575,282 |
| Landlocked Countries | 0 | - | 4.99 | 421,868 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,104,940 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,487 |
| Countries with Four Letters | 0 | - | 4.99 | 423,246 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,001 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,392 |
| Himalayan Countries | 0 | - | 4.95 | 138,668 |
| Andean Countries | 0 | - | 4.93 | 84,580 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,774 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,779 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,403 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,790 |
| Danube Countries | 0 | - | 4.97 | 71,998 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,002 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,417 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,280 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,764 |
| European Landlocked Countries | 0 | - | 4.99 | 147,137 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,622 |
| Countries with the Most Species | 0 | - | 4.99 | 103,236 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,748 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,584 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,719 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,027 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,537 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,283 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,218 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,650 |
| Countries in the Alps | 0 | - | 4.87 | 118,192 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,056 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,014 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,637 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,591 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,501 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,944 |
| Country Chain | 0 | - | 4.96 | 217,373 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,664 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,481 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,174 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,832 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,647 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,518 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,216 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,462 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,509 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,884 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,301 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,653 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,057 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,880 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,075 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,219 |
| Largest Countries By Category | 0 | - | 4.97 | 158,196 |
| Countries by Emojis | 0 | - | 4.99 | 240,325 |
| Countries by Countries | 0 | - | 4.96 | 63,213 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,094 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,669 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,669 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,282 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,564 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,671 |
| Islands by Country #1 | 0 | - | 4.88 | 175,462 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,623 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,014 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,798 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 217,330 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,789 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,597 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,133 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,406 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,569 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,597 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,927 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,502 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,477 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,139 |
| Island Countries | 0 | - | 4.99 | 711,012 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,747 |
| Northernmost Countries | 0 | - | 4.99 | 361,918 |
| Countries of South America | 0 | - | 5.00 | 927,235 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,692 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,947 |
| "Land" Countries | 0 | - | 4.98 | 337,310 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,141 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,317 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,256 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,848 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,589 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,425 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,910 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,329 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,628 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,549 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,589 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,100 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,183 |
| Random Countries by Borders | 0 | - | 4.99 | 82,605 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,383 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,861 |
| Countries with Megacities | 0 | - | 4.99 | 264,485 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,716 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,457 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,977 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,521 |
| Countries by Official Language | 0 | - | 4.95 | 195,232 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,343 |
| Countries in their Native Language | 0 | - | 4.99 | 199,026 |
| Independence from Whom | 0 | - | 4.99 | 212,069 |
| Subdivisions by Country | 0 | - | 4.86 | 50,428 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,712 |
| Megadiverse Countries | 0 | - | 4.96 | 135,003 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,064 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,345 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,231 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,097 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,131 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,591 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,456 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,027 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,650 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,144 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,654 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,871 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,196 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,957 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,343 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,488 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,152 |
| World Map Quiz | 0 | - | 4.81 | 65,064 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,242 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,343 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,070 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,267 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,989 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,165 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,880 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,002 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,292 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,435 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,565 |
| Widest Countries East to West | 0 | - | 4.92 | 129,631 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,450 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,365 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,117 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,763 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,590 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,860 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,370 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,796 |
| Countries with Double Letters | 0 | - | 4.96 | 96,213 |
| Countries that End in N | 0 | - | 4.95 | 171,088 |
| Countries with Five Letters | 0 | - | 4.96 | 282,397 |
| Countries with Six Letters | 0 | - | 4.94 | 213,513 |
| Countries with W | 0 | - | 4.97 | 160,303 |
| Countries with Z | 0 | - | 4.98 | 291,412 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,674 |
| Countries That End in U | 0 | - | 4.95 | 120,839 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,437 |
| Countries that End in O | 0 | - | 4.92 | 159,499 |
| Countries that End in R | 0 | - | 4.87 | 118,959 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,718 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,052 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,677 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,461 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,379 |
| Countries That End in Y | 0 | - | 4.91 | 185,860 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,889 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,837 |
| Countries that End in I | 0 | - | 4.94 | 135,082 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,075 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,814 |
| Countries That End in NIA | 0 | - | 4.92 | 109,773 |
| Countries That End in BIA | 0 | - | 4.93 | 149,180 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,104 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,405 |
| Countries That End in RIA | 0 | - | 4.93 | 126,797 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,008 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,560 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,679 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,088 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,645 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,566 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,006 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,437 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,510 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,406 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,267 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,964 |
| Countries that End in L | 0 | - | 4.94 | 156,822 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,675 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,258 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,009 |
