| Country Chain | 0 | - | 4.96 | 218,258 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,854 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,614 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,946 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,370 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,746 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,572 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,794,421 |
| Landlocked Countries | 0 | - | 4.99 | 424,682 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,111,286 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,871 |
| Countries with Four Letters | 0 | - | 4.99 | 425,239 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,337 |
| Capital Cities Chain | 0 | - | 4.84 | 83,258 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,706 |
| Himalayan Countries | 0 | - | 4.93 | 139,831 |
| Andean Countries | 0 | - | 4.94 | 85,213 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,392 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,692 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,956 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,257 |
| Danube Countries | 0 | - | 4.97 | 72,286 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,436 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,723 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,892 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,388 |
| European Landlocked Countries | 0 | - | 4.99 | 147,473 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,113 |
| Countries with the Most Species | 0 | - | 4.99 | 103,502 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,261 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,715 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,828 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,778 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,761 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,199 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,493 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,917 |
| Countries in the Alps | 0 | - | 4.87 | 118,614 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,367 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,634 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,888 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,912 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,835 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,148 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,274 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,779 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,350 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,082 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,801 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,671 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,464 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,702 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,790 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,558 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,532 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,584 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,511 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,268 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,884 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,440 |
| Largest Countries By Category | 0 | - | 4.97 | 158,685 |
| Countries by Emojis | 0 | - | 4.99 | 241,508 |
| Countries by Countries | 0 | - | 4.96 | 63,528 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,457 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,281 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,130 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,368 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,645 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,997 |
| Islands by Country #1 | 0 | - | 4.90 | 176,187 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,132 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,456 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,316 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 218,481 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,649 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,533 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,727 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,773 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,661 |
| Name a Valid Country #6 | 0 | - | 4.95 | 144,187 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 739,681 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,570 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,360 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,070 |
| Island Countries | 0 | - | 4.99 | 712,135 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,478 |
| Northernmost Countries | 0 | - | 4.99 | 363,491 |
| Countries of South America | 0 | - | 5.00 | 931,159 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,494 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,898 |
| "Land" Countries | 0 | - | 4.98 | 338,097 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,596 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,613 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,568 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,016 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,818 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,090 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,282 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,548 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,823 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,780 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,456 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,819 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,462 |
| Random Countries by Borders | 0 | - | 4.99 | 82,927 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,375 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,858 |
| Countries with Megacities | 0 | - | 4.99 | 266,521 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,567 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,950 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,861 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,058 |
| Countries by Official Language | 0 | - | 4.95 | 195,805 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,355 |
| Countries in their Native Language | 0 | - | 4.99 | 199,584 |
| Independence from Whom | 0 | - | 4.99 | 212,819 |
| Subdivisions by Country | 0 | - | 4.87 | 50,573 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,266 |
| Megadiverse Countries | 0 | - | 4.96 | 135,207 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,787 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,487 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,393 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,195 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,466 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,777 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,961 |
| 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 | 45,228 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,270 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,322 |
| 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 | 75,522 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,644 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,080 |
| World Map Quiz | 0 | - | 4.81 | 65,490 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,707 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,602 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,034 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,971 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,452 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,285 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,305 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,430 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,625 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,628 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,294 |
| Widest Countries East to West | 0 | - | 4.92 | 130,347 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,570 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,129 |
| 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 | 94,993 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,885 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,384 |
| 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 | 171,724 |
| Countries with Five Letters | 0 | - | 4.96 | 283,455 |
| Countries with Six Letters | 0 | - | 4.94 | 214,205 |
| Countries with W | 0 | - | 4.96 | 160,778 |
| Countries with Z | 0 | - | 4.98 | 292,182 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,125 |
| Countries That End in U | 0 | - | 4.95 | 121,087 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,935 |
| Countries that End in O | 0 | - | 4.92 | 159,736 |
| Countries that End in R | 0 | - | 4.87 | 119,123 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,877 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,630 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,024 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,734 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,657 |
| Countries That End in Y | 0 | - | 4.91 | 186,037 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,325 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,162 |
| Countries that End in I | 0 | - | 4.94 | 135,260 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,488 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,989 |
| Countries That End in NIA | 0 | - | 4.92 | 109,976 |
| Countries That End in BIA | 0 | - | 4.93 | 149,492 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,409 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,686 |
| Countries That End in RIA | 0 | - | 4.93 | 126,998 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,285 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,338 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,057 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,492 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,057 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,752 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,247 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,516 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,801 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,593 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,606 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,289 |
| Countries that End in L | 0 | - | 4.94 | 157,049 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,245 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,322 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,033 |
