| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,606,958 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 716,981 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,548 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,325 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,927 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,819 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,956 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,208,537 |
| Landlocked Countries | 0 | - | 4.99 | 417,228 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,336 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,316 |
| Countries with Four Letters | 0 | - | 4.99 | 420,704 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,744,962 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,204 |
| Himalayan Countries | 0 | - | 4.95 | 136,745 |
| Andean Countries | 0 | - | 4.95 | 83,596 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,858 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,152 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,522 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,121 |
| Danube Countries | 0 | - | 4.97 | 71,486 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,294 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,895 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,291 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,284 |
| European Landlocked Countries | 0 | - | 4.99 | 146,190 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,869 |
| Countries with the Most Species | 0 | - | 4.99 | 102,361 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,998 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,354 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,535 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,143 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,203 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 170,422 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,854 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,233 |
| Countries in the Alps | 0 | - | 4.86 | 117,425 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,962 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,034 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,302 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,800 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,896 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,316 |
| Country Chain | 0 | - | 4.96 | 216,523 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,067 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,040 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,859 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,390 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,392 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,236 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,786 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,048 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,057 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,832 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,937 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,467 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,302 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,325 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,736 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,871 |
| Largest Countries By Category | 0 | - | 4.97 | 157,353 |
| Countries by Emojis | 0 | - | 4.99 | 238,019 |
| Countries by Countries | 0 | - | 4.96 | 62,662 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,509 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,007 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,950 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,107 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,422 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,140 |
| Islands by Country #1 | 0 | - | 4.87 | 174,896 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,216 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,571 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,540 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,321 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,438 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,917 |
| Name a Valid Country #1 | 0 | - | 4.99 | 287,448 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,354 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,302 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,407 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,493 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,502 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,075 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,187 |
| Island Countries | 0 | - | 4.99 | 709,071 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,071 |
| Northernmost Countries | 0 | - | 4.99 | 359,697 |
| Countries of South America | 0 | - | 5.00 | 920,480 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,034 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,704 |
| "Land" Countries | 0 | - | 4.98 | 335,120 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,986 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,765 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,784 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,534 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,168 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,926 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,276 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,960 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,933 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,021 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,372 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,229 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,445 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,873 |
| Random Countries by Borders | 0 | - | 4.99 | 82,086 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,283 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,477 |
| Countries with Megacities | 0 | - | 4.99 | 249,396 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,327 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,656 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,653 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,633 |
| Countries by Official Language | 0 | - | 4.95 | 194,223 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,036 |
| Countries in their Native Language | 0 | - | 4.99 | 197,821 |
| Independence from Whom | 0 | - | 4.99 | 210,962 |
| Subdivisions by Country | 0 | - | 4.86 | 50,221 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,439 |
| Megadiverse Countries | 0 | - | 4.96 | 134,598 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,986 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,105 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,660 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,961 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,511 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,270 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,692 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,594 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,405 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,819 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,462 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,613 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,712 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,682 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,890 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,246 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,729 |
| World Map Quiz | 0 | - | 4.81 | 64,216 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,691 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,768 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,178 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,736 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,469 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,872 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,341 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,519 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,682 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,176 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,072 |
| Widest Countries East to West | 0 | - | 4.92 | 129,216 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,340 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,734 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,946 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,995 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,041 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,412 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,150 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,690 |
| Countries with Double Letters | 0 | - | 4.96 | 94,514 |
| Countries that End in N | 0 | - | 4.95 | 168,528 |
| Countries with Five Letters | 0 | - | 4.96 | 271,406 |
| Countries with Six Letters | 0 | - | 4.93 | 211,756 |
| Countries with W | 0 | - | 4.97 | 159,108 |
| Countries with Z | 0 | - | 4.98 | 289,195 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,309 |
| Countries That End in U | 0 | - | 4.95 | 120,164 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,358 |
| Countries that End in O | 0 | - | 4.92 | 159,011 |
| Countries that End in R | 0 | - | 4.87 | 118,595 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,378 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,942 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,864 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,899 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,485 |
| Countries That End in Y | 0 | - | 4.90 | 185,507 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,970 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,188 |
| Countries that End in I | 0 | - | 4.94 | 134,724 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,791 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,459 |
| Countries That End in NIA | 0 | - | 4.92 | 109,350 |
| Countries That End in BIA | 0 | - | 4.93 | 148,645 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,504 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,852 |
| Countries That End in RIA | 0 | - | 4.93 | 126,392 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,425 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,232 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,959 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,284 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,913 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,193 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,517 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,039 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,918 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,088 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,614 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,310 |
| Countries that End in L | 0 | - | 4.94 | 156,366 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,218 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,097 |
