| Word Scramble - Countries | 0 | - | 4.87 | 2,111,469 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,634 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,969 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,377 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,586 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,287 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,552 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,648,115 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,798,788 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,888 |
| Countries with Four Letters | 0 | - | 4.99 | 425,273 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,759 |
| Landlocked Countries | 0 | - | 4.99 | 424,732 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,792 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,211 |
| Country Chain | 0 | - | 4.96 | 218,265 |
| Countries by Emojis | 0 | - | 4.99 | 241,529 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,462 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,323 |
| Islands by Country #1 | 0 | - | 4.90 | 176,198 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,142 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,463 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,319 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,723 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,666 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,201 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,441 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 218,502 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,679 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,578 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,764 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,800 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,684 |
| Name a Valid Country #6 | 0 | - | 4.95 | 144,283 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 739,791 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,734 |
| Himalayan Countries | 0 | - | 4.93 | 139,849 |
| Andean Countries | 0 | - | 4.94 | 85,221 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,395 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,707 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,960 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,265 |
| Danube Countries | 0 | - | 4.97 | 72,291 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,440 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,728 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,899 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,399 |
| European Landlocked Countries | 0 | - | 4.99 | 147,480 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,124 |
| Countries with the Most Species | 0 | - | 4.99 | 103,503 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,269 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,719 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,829 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,764 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,497 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,920 |
| Countries in the Alps | 0 | - | 4.87 | 118,626 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,388 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,644 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,890 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,917 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,841 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,153 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,280 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,786 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,354 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,084 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,803 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,674 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,466 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,704 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,794 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,567 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,536 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,600 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,517 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,281 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,899 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,443 |
| Largest Countries By Category | 0 | - | 4.97 | 158,694 |
| Countries by Countries | 0 | - | 4.96 | 63,533 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,133 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,368 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,004 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,613 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,378 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,092 |
| Island Countries | 0 | - | 4.99 | 712,156 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,533 |
| Northernmost Countries | 0 | - | 4.99 | 363,514 |
| Countries of South America | 0 | - | 5.00 | 931,239 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,552 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,054 |
| "Land" Countries | 0 | - | 4.98 | 338,115 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,603 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,619 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,571 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,017 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,823 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,225 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,845 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,801 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,465 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,832 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,467 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 238,383 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,210 |
| Random Countries by Borders | 0 | - | 4.99 | 82,935 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,389 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,871 |
| Countries with Megacities | 0 | - | 4.99 | 266,550 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,579 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,959 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,874 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,065 |
| Countries by Official Language | 0 | - | 4.95 | 195,817 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,367 |
| Countries in their Native Language | 0 | - | 4.99 | 199,599 |
| Independence from Whom | 0 | - | 4.99 | 212,834 |
| Subdivisions by Country | 0 | - | 4.87 | 50,575 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,275 |
| Megadiverse Countries | 0 | - | 4.96 | 135,210 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,796 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,491 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,396 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,195 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,472 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,780 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,970 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,519 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,783 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,229 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,290 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,324 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,385 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,112 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,526 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,645 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,091 |
| World Map Quiz | 0 | - | 4.81 | 65,530 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,666 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,735 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,608 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,040 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,975 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,455 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,302 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,310 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,432 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,630 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,631 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,320 |
| Widest Countries East to West | 0 | - | 4.92 | 130,350 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,571 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,143 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,477 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,997 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,885 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,385 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,469 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,870 |
| Countries with Double Letters | 0 | - | 4.96 | 96,853 |
| Countries that End in N | 0 | - | 4.95 | 171,736 |
| Countries with Five Letters | 0 | - | 4.96 | 283,470 |
| Countries with Six Letters | 0 | - | 4.94 | 214,213 |
| Countries with W | 0 | - | 4.96 | 160,786 |
| Countries with Z | 0 | - | 4.98 | 292,193 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,135 |
| Countries That End in U | 0 | - | 4.95 | 121,093 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,949 |
| Countries that End in O | 0 | - | 4.92 | 159,739 |
| Countries that End in R | 0 | - | 4.87 | 119,125 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,882 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,639 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,032 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,742 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,669 |
| Countries That End in Y | 0 | - | 4.91 | 186,040 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,331 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,168 |
| Countries that End in I | 0 | - | 4.94 | 135,261 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,499 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,992 |
| Countries That End in NIA | 0 | - | 4.92 | 109,981 |
| Countries That End in BIA | 0 | - | 4.93 | 149,498 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,416 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,688 |
| Countries That End in RIA | 0 | - | 4.93 | 127,001 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,287 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,355 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,060 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,497 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,062 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,756 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,251 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,516 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,805 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,594 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,616 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,295 |
