| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,968 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 745,662 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,735 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,887 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,939 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,348 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,228 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,973,034 |
| Landlocked Countries | 0 | - | 4.99 | 427,289 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,128,312 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,108 |
| Countries with Four Letters | 0 | - | 4.99 | 426,484 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,778 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,937 |
| Himalayan Countries | 0 | - | 4.93 | 140,846 |
| Andean Countries | 0 | - | 4.94 | 85,811 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,926 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,501 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,470 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,698 |
| Danube Countries | 0 | - | 4.97 | 72,564 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,805 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,975 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,452 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,924 |
| European Landlocked Countries | 0 | - | 4.99 | 147,746 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,544 |
| Countries with the Most Species | 0 | - | 4.99 | 103,652 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,647 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,815 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,953 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,317 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,927 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,680 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,682 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,139 |
| Countries in the Alps | 0 | - | 4.87 | 118,982 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,007 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,139 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,056 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,175 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,132 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,395 |
| Country Chain | 0 | - | 4.96 | 218,669 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,601 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,996 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,517 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,316 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,954 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,831 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,679 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,927 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,024 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,155 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,739 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,490 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,844 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,327 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,505 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,620 |
| Largest Countries By Category | 0 | - | 4.97 | 159,101 |
| Countries by Emojis | 0 | - | 4.99 | 242,858 |
| Countries by Countries | 0 | - | 4.97 | 63,813 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,714 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,381 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,455 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,451 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,705 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,236 |
| Islands by Country #1 | 0 | - | 4.90 | 176,500 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,340 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,658 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,472 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,515 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,240 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,399 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,137 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,624 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,614 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,435 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,662 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,645 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,054 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,386 |
| Island Countries | 0 | - | 4.99 | 713,030 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,219 |
| Northernmost Countries | 0 | - | 4.99 | 364,613 |
| Countries of South America | 0 | - | 5.00 | 934,337 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,597 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,196 |
| "Land" Countries | 0 | - | 4.98 | 339,011 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,904 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,827 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,777 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,212 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,023 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,201 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,694 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,880 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,625 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,461 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 194,034 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,353 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,634 |
| Random Countries by Borders | 0 | - | 4.99 | 83,203 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,911 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,513 |
| Countries with Megacities | 0 | - | 4.99 | 267,883 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,167 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,345 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,493 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,446 |
| Countries by Official Language | 0 | - | 4.95 | 196,232 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,957 |
| Countries in their Native Language | 0 | - | 4.99 | 199,965 |
| Independence from Whom | 0 | - | 4.99 | 213,418 |
| Subdivisions by Country | 0 | - | 4.87 | 50,669 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,673 |
| Megadiverse Countries | 0 | - | 4.96 | 149,150 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,142 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,582 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,812 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,260 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,481 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,289 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,629 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,171 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,784 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,491 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,510 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,220 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,643 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,981 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,746 |
| World Map Quiz | 0 | - | 4.81 | 65,931 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,911 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,821 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,527 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,240 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,711 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,947 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,558 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,669 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,857 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,765 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,949 |
| Widest Countries East to West | 0 | - | 4.92 | 130,861 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,629 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,407 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,567 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,164 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,123 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,618 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,537 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,922 |
| Countries with Double Letters | 0 | - | 4.96 | 97,647 |
| Countries that End in N | 0 | - | 4.95 | 172,647 |
| Countries with Five Letters | 0 | - | 4.96 | 284,670 |
| Countries with Six Letters | 0 | - | 4.94 | 214,977 |
| Countries with W | 0 | - | 4.96 | 161,324 |
| Countries with Z | 0 | - | 4.98 | 293,025 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,688 |
| Countries That End in U | 0 | - | 4.95 | 121,396 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,441 |
| Countries that End in O | 0 | - | 4.92 | 160,373 |
| Countries that End in R | 0 | - | 4.87 | 119,283 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,063 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,166 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 186,107 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,208 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,812 |
| Countries That End in Y | 0 | - | 4.91 | 186,177 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,322 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,430 |
| Countries that End in I | 0 | - | 4.94 | 135,431 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,299 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,150 |
| Countries That End in NIA | 0 | - | 4.92 | 110,161 |
| Countries That End in BIA | 0 | - | 4.93 | 149,745 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,944 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,912 |
| Countries That End in RIA | 0 | - | 4.93 | 127,155 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,548 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,960 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,401 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,869 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,414 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,929 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,464 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,612 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,065 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,740 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,915 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,625 |
| Countries that End in L | 0 | - | 4.94 | 157,253 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,610 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,381 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,890 |
