| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,593,548 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 713,044 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,005,976 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,090,275 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,232 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,593 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,476 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,451 |
| Countries with Four Letters | 0 | - | 4.99 | 419,150 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,116 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,419 |
| Landlocked Countries | 0 | - | 4.99 | 414,688 |
| Countries of the World - One Minute Sprint | 0 | - | 4.35 | 957,099 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,648 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,535 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,654 |
| Country Chain | 0 | - | 4.96 | 215,945 |
| Countries by Emojis | 0 | - | 4.99 | 237,015 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,225 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,517 |
| Islands by Country #1 | 0 | - | 4.87 | 174,598 |
| Regions of Countries #1 | 0 | - | 4.97 | 159,010 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,356 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,395 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,725,474 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,224 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,166 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,363 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,854 |
| Name a Valid Country #4 | 0 | - | 4.97 | 252,218 |
| Name a Valid Country #5 | 0 | - | 4.99 | 190,177 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,720 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,036 |
| Himalayan Countries | 0 | - | 4.95 | 135,731 |
| Andean Countries | 0 | - | 4.94 | 83,040 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,388 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,464 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,085 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,748 |
| Danube Countries | 0 | - | 4.97 | 71,189 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,914 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,646 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,724 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,625 |
| European Landlocked Countries | 0 | - | 4.99 | 145,883 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,384 |
| Countries with the Most Species | 0 | - | 4.99 | 95,307 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,548 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,241 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,409 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,021 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,663 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,030 |
| Countries in the Alps | 0 | - | 4.86 | 117,002 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,688 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,469 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,114 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,516 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,306 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,096 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,708 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,847 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,610 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,158 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,236 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,106 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,553 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,833 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,836 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,315 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,743 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,314 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,957 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,891 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,032 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,686 |
| Largest Countries By Category | 0 | - | 4.97 | 156,923 |
| Countries by Countries | 0 | - | 4.96 | 62,378 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,560 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,002 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,361 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,869 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,264 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,511 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,386 |
| Island Countries | 0 | - | 4.99 | 708,038 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,909 |
| Northernmost Countries | 0 | - | 4.99 | 358,325 |
| Countries of South America | 0 | - | 5.00 | 916,695 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,739 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,057 |
| "Land" Countries | 0 | - | 4.98 | 333,930 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,599 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,540 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,442 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,410 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,941 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,254 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,892 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,750 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,934 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,142 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,625 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,658 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 137,524 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,668 |
| Random Countries by Borders | 0 | - | 4.99 | 81,770 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,470 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 236,999 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,722 |
| Countries with Megacities | 0 | - | 4.99 | 247,803 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,589 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,245 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,972 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,194 |
| Countries by Official Language | 0 | - | 4.95 | 192,996 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,449 |
| Countries in their Native Language | 0 | - | 4.99 | 196,855 |
| Independence from Whom | 0 | - | 4.99 | 209,972 |
| Subdivisions by Country | 0 | - | 4.86 | 50,116 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,941 |
| Megadiverse Countries | 0 | - | 4.97 | 133,987 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,020 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,971 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,484 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,889 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,793 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,076 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,230 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,262 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,268 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,770 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,773 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,472 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,570 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,559 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,753 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,083 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,915 |
| World Map Quiz | 0 | - | 4.81 | 63,690 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 135,356 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,278 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,458 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,629 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,405 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,139 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,116 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,038 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,227 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,425 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,027 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,467 |
| Widest Countries East to West | 0 | - | 4.92 | 128,962 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,261 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,371 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,617 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,793 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,734 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,164 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 74,672 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,628 |
| Countries with Double Letters | 0 | - | 4.97 | 93,590 |
| Countries that End in N | 0 | - | 4.94 | 157,070 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,910 |
| Countries with Six Letters | 0 | - | 4.93 | 210,582 |
| Countries with W | 0 | - | 4.97 | 158,361 |
| Countries with Z | 0 | - | 4.98 | 288,109 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,688 |
| Countries That End in U | 0 | - | 4.95 | 119,588 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,789 |
| Countries that End in O | 0 | - | 4.92 | 158,618 |
| Countries that End in R | 0 | - | 4.87 | 118,340 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,909 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,312 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,477 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,596 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,143 |
| Countries That End in Y | 0 | - | 4.90 | 185,261 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,538 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,830 |
| Countries that End in I | 0 | - | 4.94 | 134,507 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,372 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,264 |
| Countries That End in NIA | 0 | - | 4.92 | 109,080 |
| Countries That End in BIA | 0 | - | 4.92 | 147,807 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,190 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,590 |
| Countries That End in RIA | 0 | - | 4.93 | 126,159 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,124 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,563 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,623 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,983 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,485 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,987 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,222 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,744 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,627 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,861 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,259 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,929 |
