| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,615,556 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,245 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,170 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,859 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,218 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,239 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,281 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,343,949 |
| Landlocked Countries | 0 | - | 4.99 | 419,095 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,771 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,965 |
| Countries with Four Letters | 0 | - | 4.99 | 421,664 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,631 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,047 |
| Himalayan Countries | 0 | - | 4.94 | 137,495 |
| Andean Countries | 0 | - | 4.95 | 83,972 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,247 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,706 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,859 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,367 |
| Danube Countries | 0 | - | 4.97 | 71,680 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,577 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,067 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,681 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,753 |
| European Landlocked Countries | 0 | - | 4.99 | 146,792 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,158 |
| Countries with the Most Species | 0 | - | 4.99 | 102,924 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,291 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,436 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,597 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,490 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,319 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,712 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,000 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,373 |
| Countries in the Alps | 0 | - | 4.87 | 117,708 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,152 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,394 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,431 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,007 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,114 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,689 |
| Country Chain | 0 | - | 4.96 | 216,844 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,297 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,200 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,975 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,564 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,493 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,343 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,943 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,198 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,221 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,216 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,074 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,581 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,551 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,452 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,262 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,011 |
| Largest Countries By Category | 0 | - | 4.97 | 157,661 |
| Countries by Emojis | 0 | - | 4.99 | 238,858 |
| Countries by Countries | 0 | - | 4.96 | 62,852 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,745 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,947 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,234 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,168 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,475 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,336 |
| Islands by Country #1 | 0 | - | 4.88 | 175,125 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,394 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,738 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,634 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,111 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,952 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,552 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,802 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,117 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,027 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,420 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,993 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,111 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,643 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,177 |
| Island Countries | 0 | - | 4.99 | 709,821 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,196 |
| Northernmost Countries | 0 | - | 4.99 | 360,544 |
| Countries of South America | 0 | - | 5.00 | 923,082 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,284 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,765 |
| "Land" Countries | 0 | - | 4.98 | 335,828 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,589 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,946 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,963 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,655 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,317 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,994 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,521 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,091 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,610 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,592 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,836 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,581 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 139,029 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,001 |
| Random Countries by Borders | 0 | - | 4.99 | 82,296 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,745 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,074 |
| Countries with Megacities | 0 | - | 4.99 | 260,739 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,930 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,017 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,203 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,030 |
| Countries by Official Language | 0 | - | 4.95 | 194,657 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,572 |
| Countries in their Native Language | 0 | - | 4.99 | 198,212 |
| Independence from Whom | 0 | - | 4.99 | 211,347 |
| Subdivisions by Country | 0 | - | 4.86 | 50,292 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,733 |
| Megadiverse Countries | 0 | - | 4.96 | 134,779 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,562 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,190 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,760 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,022 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,726 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,390 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,999 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,850 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,492 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,996 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,024 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,726 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,003 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,788 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,163 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,331 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,232 |
| World Map Quiz | 0 | - | 4.81 | 64,548 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,674 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,046 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,533 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,937 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,655 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,361 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,530 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,682 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,839 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,270 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,295 |
| Widest Countries East to West | 0 | - | 4.92 | 129,387 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,386 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,969 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,997 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,518 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,231 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,562 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,241 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,729 |
| Countries with Double Letters | 0 | - | 4.97 | 95,117 |
| Countries that End in N | 0 | - | 4.95 | 170,037 |
| Countries with Five Letters | 0 | - | 4.96 | 280,359 |
| Countries with Six Letters | 0 | - | 4.94 | 212,514 |
| Countries with W | 0 | - | 4.97 | 159,533 |
| Countries with Z | 0 | - | 4.98 | 289,837 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,765 |
| Countries That End in U | 0 | - | 4.95 | 120,420 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,772 |
| Countries that End in O | 0 | - | 4.92 | 159,207 |
| Countries that End in R | 0 | - | 4.87 | 118,739 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,518 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,358 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,130 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,094 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,678 |
| Countries That End in Y | 0 | - | 4.90 | 185,653 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,244 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,444 |
| Countries that End in I | 0 | - | 4.94 | 134,877 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,106 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,584 |
| Countries That End in NIA | 0 | - | 4.92 | 109,523 |
| Countries That End in BIA | 0 | - | 4.93 | 148,857 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,741 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,073 |
| Countries That End in RIA | 0 | - | 4.93 | 126,546 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,647 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,738 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,254 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,618 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,135 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,338 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,692 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,252 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,140 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,205 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,844 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,556 |
| Countries that End in L | 0 | - | 4.94 | 156,547 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,078 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,157 |
