| Country Chain | 0 | - | 4.96 | 216,354 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,602,061 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,226 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,040 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,753 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,570 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,750 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,130,051 |
| Landlocked Countries | 0 | - | 4.99 | 416,233 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,093,652 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,839 |
| Countries with Four Letters | 0 | - | 4.99 | 420,081 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,620 |
| Capital Cities Chain | 0 | - | 4.84 | 82,201 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,725 |
| Himalayan Countries | 0 | - | 4.95 | 136,327 |
| Andean Countries | 0 | - | 4.95 | 83,387 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,650 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,878 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,346 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,953 |
| Danube Countries | 0 | - | 4.97 | 71,352 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,146 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,812 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,069 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,020 |
| European Landlocked Countries | 0 | - | 4.99 | 146,078 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,691 |
| Countries with the Most Species | 0 | - | 4.99 | 99,735 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,840 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,310 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,486 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,863 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,128 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,975 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,779 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,151 |
| Countries in the Alps | 0 | - | 4.86 | 117,277 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,866 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,797 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,226 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,691 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,737 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,216 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,943 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,966 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,765 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,297 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,337 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,188 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,689 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,959 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,969 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,630 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,866 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,399 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,152 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,761 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,462 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,789 |
| Largest Countries By Category | 0 | - | 4.97 | 157,201 |
| Countries by Emojis | 0 | - | 4.99 | 237,666 |
| Countries by Countries | 0 | - | 4.96 | 62,556 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,402 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,367 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,816 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,068 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,403 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,046 |
| Islands by Country #1 | 0 | - | 4.87 | 174,772 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,142 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,497 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,477 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,844 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,396 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,500 |
| Name a Valid Country #2 | 0 | - | 4.98 | 248,653 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,698 |
| Name a Valid Country #5 | 0 | - | 4.99 | 203,913 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,056 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 715,603 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,502 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,637 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,459 |
| Island Countries | 0 | - | 4.99 | 708,670 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,845 |
| Northernmost Countries | 0 | - | 4.99 | 359,153 |
| Countries of South America | 0 | - | 5.00 | 919,094 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,914 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,253 |
| "Land" Countries | 0 | - | 4.98 | 334,315 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,827 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,658 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,701 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,492 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,079 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,410 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,132 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,875 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,533 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,671 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,075 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,988 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,077 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,801 |
| Random Countries by Borders | 0 | - | 4.99 | 81,919 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,951 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,163 |
| Countries with Megacities | 0 | - | 4.99 | 248,705 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,027 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,481 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,395 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,431 |
| Countries by Official Language | 0 | - | 4.95 | 193,877 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,351 |
| Countries in their Native Language | 0 | - | 4.99 | 197,517 |
| Independence from Whom | 0 | - | 4.99 | 210,435 |
| Subdivisions by Country | 0 | - | 4.86 | 50,176 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,252 |
| Megadiverse Countries | 0 | - | 4.96 | 134,511 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,712 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,061 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,610 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,939 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,386 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,185 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,503 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,514 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,349 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,797 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,106 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,560 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,659 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,628 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,832 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,181 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,407 |
| World Map Quiz | 0 | - | 4.81 | 63,988 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,144 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,661 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,982 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,622 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,348 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,594 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,223 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,411 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,590 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,125 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,611 |
| Widest Countries East to West | 0 | - | 4.92 | 129,105 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,318 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,599 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,888 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,927 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,942 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,319 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,013 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,660 |
| Countries with Double Letters | 0 | - | 4.96 | 93,845 |
| Countries that End in N | 0 | - | 4.94 | 157,277 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,243 |
| Countries with Six Letters | 0 | - | 4.93 | 210,867 |
| Countries with W | 0 | - | 4.97 | 158,533 |
| Countries with Z | 0 | - | 4.98 | 288,435 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,871 |
| Countries That End in U | 0 | - | 4.95 | 119,672 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,035 |
| Countries that End in O | 0 | - | 4.92 | 158,712 |
| Countries that End in R | 0 | - | 4.87 | 118,422 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,978 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,599 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,652 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,739 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,307 |
| Countries That End in Y | 0 | - | 4.90 | 185,331 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,753 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,014 |
| Countries that End in I | 0 | - | 4.94 | 134,606 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,618 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,373 |
| Countries That End in NIA | 0 | - | 4.92 | 109,239 |
| Countries That End in BIA | 0 | - | 4.93 | 148,474 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,362 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,716 |
| Countries That End in RIA | 0 | - | 4.93 | 126,280 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,267 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,969 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,794 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,149 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,698 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,091 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,373 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,892 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,783 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,952 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,455 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,116 |
| Countries that End in L | 0 | - | 4.94 | 156,217 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,666 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,040 |
