| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,591,632 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 712,488 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,457 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,348 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,376 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,030 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,364 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,979,315 |
| Landlocked Countries | 0 | - | 4.99 | 414,352 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,089,462 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,096 |
| Countries with Four Letters | 0 | - | 4.99 | 418,945 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,722,811 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,888 |
| Himalayan Countries | 0 | - | 4.95 | 135,612 |
| Andean Countries | 0 | - | 4.94 | 82,965 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,329 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,375 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,030 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,706 |
| Danube Countries | 0 | - | 4.97 | 71,152 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,854 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,610 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,634 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,549 |
| European Landlocked Countries | 0 | - | 4.99 | 145,849 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,311 |
| Countries with the Most Species | 0 | - | 4.99 | 95,287 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,464 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,223 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,394 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,465 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,998 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,581 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,638 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,007 |
| Countries in the Alps | 0 | - | 4.86 | 116,944 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,651 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,395 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,075 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,483 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,264 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,067 |
| Country Chain | 0 | - | 4.96 | 215,879 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,666 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,820 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,546 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,125 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,222 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,086 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,508 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,807 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,803 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,220 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,716 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,295 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,871 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,674 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,914 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,656 |
| Largest Countries By Category | 0 | - | 4.97 | 156,878 |
| Countries by Emojis | 0 | - | 4.99 | 236,907 |
| Countries by Countries | 0 | - | 4.96 | 62,329 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,187 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,366 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,520 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,991 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,351 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,839 |
| Islands by Country #1 | 0 | - | 4.87 | 174,572 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,988 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,328 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,376 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,096 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,564 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,037 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,053 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,675 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,842 |
| Name a Valid Country #5 | 0 | - | 4.99 | 190,017 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,595 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,870 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,395 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,204 |
| Island Countries | 0 | - | 4.99 | 707,893 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,462 |
| Northernmost Countries | 0 | - | 4.99 | 358,116 |
| Countries of South America | 0 | - | 5.00 | 916,036 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,151 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,877 |
| "Land" Countries | 0 | - | 4.98 | 333,843 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,552 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,511 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,420 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,393 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,907 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,387 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,818 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,699 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,819 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,045 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,547 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,595 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 137,393 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,646 |
| Random Countries by Borders | 0 | - | 4.99 | 81,739 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,389 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,623 |
| Countries with Megacities | 0 | - | 4.99 | 247,558 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,457 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,203 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,875 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,128 |
| Countries by Official Language | 0 | - | 4.95 | 192,927 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,347 |
| Countries in their Native Language | 0 | - | 4.99 | 196,780 |
| Independence from Whom | 0 | - | 4.99 | 209,880 |
| Subdivisions by Country | 0 | - | 4.86 | 50,103 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,892 |
| Megadiverse Countries | 0 | - | 4.97 | 133,962 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,945 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,952 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,464 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,877 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,754 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,051 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,180 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,215 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,247 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,761 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,734 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,455 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,547 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,534 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,728 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,059 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,797 |
| World Map Quiz | 0 | - | 4.81 | 63,640 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,102 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,407 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,533 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,314 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,054 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,981 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,970 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,155 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,373 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,997 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,408 |
| Widest Countries East to West | 0 | - | 4.92 | 128,834 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,241 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,320 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,602 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,749 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,700 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,123 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 71,966 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,610 |
| Countries with Double Letters | 0 | - | 4.96 | 93,527 |
| Countries that End in N | 0 | - | 4.94 | 157,012 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,836 |
| Countries with Six Letters | 0 | - | 4.93 | 210,510 |
| Countries with W | 0 | - | 4.97 | 158,321 |
| Countries with Z | 0 | - | 4.98 | 288,046 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,639 |
| Countries That End in U | 0 | - | 4.95 | 119,564 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,718 |
| Countries that End in O | 0 | - | 4.92 | 158,598 |
| Countries that End in R | 0 | - | 4.87 | 118,319 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,883 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,235 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,431 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,562 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,104 |
| Countries That End in Y | 0 | - | 4.90 | 185,242 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,485 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,786 |
| Countries that End in I | 0 | - | 4.94 | 134,481 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,316 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,242 |
| Countries That End in NIA | 0 | - | 4.92 | 109,058 |
| Countries That End in BIA | 0 | - | 4.92 | 147,773 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,151 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,562 |
| Countries That End in RIA | 0 | - | 4.93 | 126,131 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,092 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,424 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,582 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,956 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,444 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,966 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,191 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,717 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,580 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,847 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,225 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,891 |
| Countries that End in L | 0 | - | 4.94 | 155,990 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,634 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,004 |
