| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,597,007 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 713,931 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,861 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,057,285 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,091,929 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,463 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,836 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 116,722 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,552 |
| Countries with Four Letters | 0 | - | 4.99 | 419,539 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,282 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 237,490 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,545 |
| Landlocked Countries | 0 | - | 4.99 | 415,348 |
| Countries of the World - One Minute Sprint | 0 | - | 4.35 | 957,688 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,670 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,778 |
| Country Chain | 0 | - | 4.96 | 216,100 |
| Countries by Emojis | 0 | - | 4.99 | 237,298 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,302 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,858 |
| Islands by Country #1 | 0 | - | 4.87 | 174,667 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,063 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,400 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,423 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,730,843 |
| Name a Valid Country #3 | 0 | - | 4.99 | 260,448 |
| Name a Valid Country #1 | 0 | - | 4.99 | 284,964 |
| Name a Valid Country #2 | 0 | - | 4.98 | 247,240 |
| Name a Valid Country #4 | 0 | - | 4.97 | 252,594 |
| Name a Valid Country #5 | 0 | - | 4.99 | 192,658 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,997 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,032 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,291 |
| Himalayan Countries | 0 | - | 4.95 | 135,972 |
| Andean Countries | 0 | - | 4.94 | 83,169 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,490 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,628 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,185 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,830 |
| Danube Countries | 0 | - | 4.97 | 71,266 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,997 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,712 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,866 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,814 |
| European Landlocked Countries | 0 | - | 4.99 | 145,964 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,521 |
| Countries with the Most Species | 0 | - | 4.99 | 95,348 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,647 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,268 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,440 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,066 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,718 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,075 |
| Countries in the Alps | 0 | - | 4.86 | 117,122 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,760 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,595 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,160 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,587 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,379 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,139 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,800 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,897 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,692 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,206 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,273 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,138 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,618 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,880 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,889 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,459 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,799 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,350 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,026 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,263 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,189 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,732 |
| Largest Countries By Category | 0 | - | 4.97 | 157,027 |
| Countries by Countries | 0 | - | 4.96 | 62,443 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,669 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,024 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,942 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,833 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,805 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,790 |
| Island Countries | 0 | - | 4.99 | 708,322 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,703 |
| Northernmost Countries | 0 | - | 4.99 | 358,688 |
| Countries of South America | 0 | - | 5.00 | 917,801 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,161 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,317 |
| "Land" Countries | 0 | - | 4.98 | 334,098 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,588 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,714 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,591 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,516 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,443 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,997 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,071 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,007 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,802 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,171 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,330 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,811 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,781 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,714 |
| European Countries with One Border | 0 | - | 4.97 | 181,908 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,810 |
| Random Countries by Borders | 0 | - | 4.99 | 81,826 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,659 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,904 |
| Countries with Megacities | 0 | - | 4.99 | 248,189 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,797 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,358 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,174 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,295 |
| Countries by Official Language | 0 | - | 4.95 | 193,185 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,721 |
| Countries in their Native Language | 0 | - | 4.99 | 197,020 |
| Independence from Whom | 0 | - | 4.99 | 210,153 |
| Subdivisions by Country | 0 | - | 4.86 | 50,149 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,065 |
| Megadiverse Countries | 0 | - | 4.96 | 134,449 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,182 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,011 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,546 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,907 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,882 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,126 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,329 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,447 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,301 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,787 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,922 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,519 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,622 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,582 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,796 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,122 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,139 |
| World Map Quiz | 0 | - | 4.81 | 63,796 |
| Empty World Map without 20 Random Countries | 0 | - | 4.93 | 135,691 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,649 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,584 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,782 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,520 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,244 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,339 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,114 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,312 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,506 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,079 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,530 |
| Widest Countries East to West | 0 | - | 4.92 | 129,025 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,285 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,486 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,653 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,866 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,828 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,229 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,675 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,641 |
| Countries with Double Letters | 0 | - | 4.96 | 93,692 |
| Countries that End in N | 0 | - | 4.94 | 157,151 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,041 |
| Countries with Six Letters | 0 | - | 4.93 | 210,713 |
| Countries with W | 0 | - | 4.97 | 158,425 |
| Countries with Z | 0 | - | 4.98 | 288,253 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,768 |
| Countries That End in U | 0 | - | 4.95 | 119,616 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,883 |
| Countries that End in O | 0 | - | 4.92 | 158,660 |
| Countries that End in R | 0 | - | 4.87 | 118,379 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,938 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,428 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,566 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,652 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,201 |
| Countries That End in Y | 0 | - | 4.90 | 185,290 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,628 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,906 |
| Countries that End in I | 0 | - | 4.94 | 134,545 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,483 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,303 |
| Countries That End in NIA | 0 | - | 4.92 | 109,123 |
| Countries That End in BIA | 0 | - | 4.92 | 147,853 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,264 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,637 |
| Countries That End in RIA | 0 | - | 4.93 | 126,203 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,187 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,742 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,691 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,042 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,588 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,029 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,287 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,802 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,690 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,900 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,000 |
