| Country Chain | 0 | - | 4.96 | 216,329 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,601,480 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,176 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,004 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,735 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,537 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,728 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,120,467 |
| Landlocked Countries | 0 | - | 4.99 | 416,086 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,093,473 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,790 |
| Countries with Four Letters | 0 | - | 4.99 | 420,013 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,736,777 |
| Capital Cities Chain | 0 | - | 4.84 | 82,183 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,650 |
| Himalayan Countries | 0 | - | 4.95 | 136,263 |
| Andean Countries | 0 | - | 4.95 | 83,345 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,617 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,829 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,316 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,932 |
| Danube Countries | 0 | - | 4.97 | 71,337 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,122 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,797 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,030 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,983 |
| European Landlocked Countries | 0 | - | 4.99 | 146,055 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,666 |
| Countries with the Most Species | 0 | - | 4.99 | 98,286 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,810 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,307 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,481 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,832 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,121 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,952 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,764 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,137 |
| Countries in the Alps | 0 | - | 4.86 | 117,261 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,850 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,767 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,215 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,671 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,609 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,209 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,918 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,956 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,755 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,287 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,329 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,184 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,680 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,943 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,946 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,612 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,856 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,391 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,137 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,697 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,440 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,784 |
| Largest Countries By Category | 0 | - | 4.97 | 157,182 |
| Countries by Emojis | 0 | - | 4.99 | 237,627 |
| Countries by Countries | 0 | - | 4.96 | 62,538 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,389 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,311 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,803 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,063 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,400 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,037 |
| Islands by Country #1 | 0 | - | 4.87 | 174,761 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,135 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,488 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,472 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,776 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,294 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,348 |
| Name a Valid Country #2 | 0 | - | 4.98 | 248,505 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,585 |
| Name a Valid Country #5 | 0 | - | 4.99 | 203,312 |
| Name a Valid Country #6 | 0 | - | 4.94 | 127,972 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 715,427 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,427 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,559 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,341 |
| Island Countries | 0 | - | 4.99 | 708,629 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,696 |
| Northernmost Countries | 0 | - | 4.99 | 359,089 |
| Countries of South America | 0 | - | 5.00 | 918,937 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,704 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,828 |
| "Land" Countries | 0 | - | 4.98 | 334,292 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,815 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,651 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,684 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,485 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,070 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,068 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,117 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,869 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,492 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,631 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,043 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,971 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,048 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,782 |
| Random Countries by Borders | 0 | - | 4.99 | 81,904 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,927 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,137 |
| Countries with Megacities | 0 | - | 4.99 | 248,647 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,996 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,469 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,380 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,419 |
| Countries by Official Language | 0 | - | 4.95 | 193,809 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,306 |
| Countries in their Native Language | 0 | - | 4.99 | 197,466 |
| Independence from Whom | 0 | - | 4.99 | 210,415 |
| Subdivisions by Country | 0 | - | 4.86 | 50,174 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,226 |
| Megadiverse Countries | 0 | - | 4.96 | 134,501 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,672 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,058 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,601 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,936 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,187 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,180 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,482 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,507 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,338 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,086 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,557 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,654 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,624 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,829 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,171 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,376 |
| World Map Quiz | 0 | - | 4.81 | 63,958 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,080 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,650 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,960 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,610 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,333 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,553 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,201 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,395 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,575 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,116 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,602 |
| Widest Countries East to West | 0 | - | 4.92 | 129,097 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,308 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,584 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,802 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,926 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,310 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,990 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,657 |
| Countries with Double Letters | 0 | - | 4.96 | 93,827 |
| Countries that End in N | 0 | - | 4.94 | 157,263 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,222 |
| Countries with Six Letters | 0 | - | 4.93 | 210,853 |
| Countries with W | 0 | - | 4.97 | 158,517 |
| Countries with Z | 0 | - | 4.98 | 288,414 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,861 |
| Countries That End in U | 0 | - | 4.95 | 119,668 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,018 |
| Countries that End in O | 0 | - | 4.92 | 158,699 |
| Countries that End in R | 0 | - | 4.87 | 118,417 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,969 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,579 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,643 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,727 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,298 |
| Countries That End in Y | 0 | - | 4.90 | 185,327 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,744 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,006 |
| Countries that End in I | 0 | - | 4.94 | 134,597 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,604 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,365 |
| Countries That End in NIA | 0 | - | 4.92 | 109,227 |
| Countries That End in BIA | 0 | - | 4.93 | 148,464 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,351 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,707 |
| Countries That End in RIA | 0 | - | 4.93 | 126,267 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,257 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,931 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,776 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,134 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,680 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,079 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,367 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,886 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,770 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,947 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,440 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,104 |
| Countries that End in L | 0 | - | 4.94 | 156,214 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,588 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,039 |
