| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,721 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 739,621 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,608 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,937 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,363 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,745 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,566 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,792,284 |
| Landlocked Countries | 0 | - | 4.99 | 424,653 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,111,222 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,857 |
| Countries with Four Letters | 0 | - | 4.99 | 425,233 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,181 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,695 |
| Himalayan Countries | 0 | - | 4.93 | 139,826 |
| Andean Countries | 0 | - | 4.94 | 85,210 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,389 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,684 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,956 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,249 |
| Danube Countries | 0 | - | 4.97 | 72,285 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,435 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,723 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,889 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,385 |
| European Landlocked Countries | 0 | - | 4.99 | 147,472 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,111 |
| Countries with the Most Species | 0 | - | 4.99 | 103,498 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,260 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,715 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,827 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,771 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,761 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,191 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,493 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,915 |
| Countries in the Alps | 0 | - | 4.87 | 118,611 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,360 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,631 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,887 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,906 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,832 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,147 |
| Country Chain | 0 | - | 4.96 | 218,252 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,269 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,778 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,349 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,082 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,800 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,667 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,461 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,702 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,788 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,555 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,530 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,574 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,510 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,265 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,878 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,440 |
| Largest Countries By Category | 0 | - | 4.97 | 158,681 |
| Countries by Emojis | 0 | - | 4.99 | 241,496 |
| Countries by Countries | 0 | - | 4.96 | 63,523 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,455 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,270 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,123 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,367 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,645 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,995 |
| Islands by Country #1 | 0 | - | 4.90 | 176,186 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,130 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,454 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,316 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 218,473 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,665 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,637 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,509 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,723 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,766 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,653 |
| Name a Valid Country #6 | 0 | - | 4.95 | 144,155 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,556 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,352 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,054 |
| Island Countries | 0 | - | 4.99 | 712,130 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,438 |
| Northernmost Countries | 0 | - | 4.99 | 363,478 |
| Countries of South America | 0 | - | 5.00 | 931,078 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,462 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,837 |
| "Land" Countries | 0 | - | 4.98 | 338,094 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,594 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,611 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,566 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,015 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,818 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,038 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,281 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,546 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,816 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,772 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,451 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,814 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,456 |
| Random Countries by Borders | 0 | - | 4.99 | 82,924 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,358 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,856 |
| Countries with Megacities | 0 | - | 4.99 | 266,512 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,561 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,946 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,853 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,054 |
| Countries by Official Language | 0 | - | 4.95 | 195,799 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,348 |
| Countries in their Native Language | 0 | - | 4.99 | 199,582 |
| Independence from Whom | 0 | - | 4.99 | 212,809 |
| Subdivisions by Country | 0 | - | 4.87 | 50,571 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,261 |
| Megadiverse Countries | 0 | - | 4.96 | 135,207 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,783 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,487 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,391 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,194 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,463 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,776 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,958 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,516 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,783 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,228 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,258 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,321 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,384 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,111 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,521 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,644 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,076 |
| World Map Quiz | 0 | - | 4.81 | 65,489 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,698 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,598 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,032 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,964 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,449 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,276 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,303 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,428 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,623 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,628 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,278 |
| Widest Countries East to West | 0 | - | 4.92 | 130,343 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,569 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,127 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,476 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,992 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,883 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,382 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,468 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,870 |
| Countries with Double Letters | 0 | - | 4.96 | 96,840 |
| Countries that End in N | 0 | - | 4.95 | 171,719 |
| Countries with Five Letters | 0 | - | 4.96 | 283,446 |
| Countries with Six Letters | 0 | - | 4.94 | 214,201 |
| Countries with W | 0 | - | 4.96 | 160,772 |
| Countries with Z | 0 | - | 4.98 | 292,177 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,123 |
| Countries That End in U | 0 | - | 4.95 | 121,087 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,931 |
| Countries that End in O | 0 | - | 4.92 | 159,735 |
| Countries that End in R | 0 | - | 4.87 | 119,123 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,874 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,626 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,022 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,732 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,655 |
| Countries That End in Y | 0 | - | 4.91 | 186,037 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,320 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,160 |
| Countries that End in I | 0 | - | 4.94 | 135,260 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,482 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,988 |
| Countries That End in NIA | 0 | - | 4.92 | 109,976 |
| Countries That End in BIA | 0 | - | 4.93 | 149,489 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,407 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,684 |
| Countries That End in RIA | 0 | - | 4.93 | 126,997 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,283 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,332 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,056 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,488 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,055 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,749 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,244 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,515 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,800 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,592 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,603 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,288 |
| Countries that End in L | 0 | - | 4.94 | 157,049 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,200 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,319 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,016 |
