| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,592,915 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 712,956 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,999,569 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,089,995 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,204 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,565 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,425 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,435 |
| Countries of Africa | 0 | - | 5.00 | 2,512,151 |
| Countries with Four Letters | 0 | - | 4.99 | 419,102 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,091 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,404 |
| Landlocked Countries | 0 | - | 4.99 | 414,589 |
| Countries of the World - One Minute Sprint | 0 | - | 4.35 | 957,040 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,628 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,522 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,636 |
| Country Chain | 0 | - | 4.96 | 215,935 |
| Countries by Emojis | 0 | - | 4.99 | 236,983 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,212 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,463 |
| Islands by Country #1 | 0 | - | 4.87 | 174,593 |
| Regions of Countries #1 | 0 | - | 4.97 | 159,002 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,350 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,390 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,724,866 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,195 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,132 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,291 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,810 |
| Name a Valid Country #4 | 0 | - | 4.97 | 252,161 |
| Name a Valid Country #5 | 0 | - | 4.99 | 190,143 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,695 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,997 |
| Himalayan Countries | 0 | - | 4.95 | 135,700 |
| Andean Countries | 0 | - | 4.94 | 83,026 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,374 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,436 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,077 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,735 |
| Danube Countries | 0 | - | 4.97 | 71,182 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,899 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,638 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,703 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,607 |
| European Landlocked Countries | 0 | - | 4.99 | 145,876 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,365 |
| Countries with the Most Species | 0 | - | 4.99 | 95,299 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,532 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,235 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,404 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,015 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,653 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,023 |
| Countries in the Alps | 0 | - | 4.86 | 116,983 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,682 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,455 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,107 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,512 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,297 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,093 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,697 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,839 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,595 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,151 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,230 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,099 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,537 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,827 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,830 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,291 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,736 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,312 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,938 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,839 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,997 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,683 |
| Largest Countries By Category | 0 | - | 4.97 | 156,909 |
| Countries by Countries | 0 | - | 4.96 | 62,360 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,551 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,999 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,357 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,858 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,179 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,484 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,334 |
| Island Countries | 0 | - | 4.99 | 708,001 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,789 |
| Northernmost Countries | 0 | - | 4.99 | 358,266 |
| Countries of South America | 0 | - | 5.00 | 916,575 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,612 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,783 |
| "Land" Countries | 0 | - | 4.98 | 333,913 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,587 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,535 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,436 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,409 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,933 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,074 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,866 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,735 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,905 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,116 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,598 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,643 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,662 |
| Random Countries by Borders | 0 | - | 4.99 | 81,760 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,452 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 236,953 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,698 |
| Countries with Megacities | 0 | - | 4.99 | 247,745 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,549 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,236 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,952 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,178 |
| Countries by Official Language | 0 | - | 4.95 | 192,975 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,428 |
| Countries in their Native Language | 0 | - | 4.99 | 196,837 |
| Independence from Whom | 0 | - | 4.99 | 209,949 |
| Subdivisions by Country | 0 | - | 4.86 | 50,114 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,929 |
| Megadiverse Countries | 0 | - | 4.97 | 133,977 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,007 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,967 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,481 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,886 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,785 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,068 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,212 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,230 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,263 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,767 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,763 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,465 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,567 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,554 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,747 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,076 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,878 |
| World Map Quiz | 0 | - | 4.81 | 63,681 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 135,315 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,235 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,438 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,605 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,376 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,119 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,097 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,018 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,211 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,411 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,019 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,455 |
| Widest Countries East to West | 0 | - | 4.92 | 128,954 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,260 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,364 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,615 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,782 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,723 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,153 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 74,106 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,625 |
| Countries with Double Letters | 0 | - | 4.96 | 93,577 |
| Countries that End in N | 0 | - | 4.94 | 157,056 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,894 |
| Countries with Six Letters | 0 | - | 4.93 | 210,560 |
| Countries with W | 0 | - | 4.97 | 158,353 |
| Countries with Z | 0 | - | 4.98 | 288,086 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,677 |
| Countries That End in U | 0 | - | 4.95 | 119,586 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,779 |
| Countries that End in O | 0 | - | 4.92 | 158,615 |
| Countries that End in R | 0 | - | 4.87 | 118,337 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,907 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,292 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,466 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,590 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,130 |
| Countries That End in Y | 0 | - | 4.90 | 185,255 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,523 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,820 |
| Countries that End in I | 0 | - | 4.94 | 134,498 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,357 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,256 |
| Countries That End in NIA | 0 | - | 4.92 | 109,077 |
| Countries That End in BIA | 0 | - | 4.92 | 147,797 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,181 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,585 |
| Countries That End in RIA | 0 | - | 4.93 | 126,153 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,114 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,553 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,617 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,980 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,472 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,979 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,214 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,737 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,615 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,857 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,251 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,918 |
