| Word Scramble - Countries | 0 | - | 4.88 | 2,128,412 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,743 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,896 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,952 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,233 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,660,237 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,976,734 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,129 |
| Countries with Four Letters | 0 | - | 4.99 | 426,502 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,355 |
| Landlocked Countries | 0 | - | 4.99 | 427,329 |
| Solve the Secret Capital City | 0 | - | 4.80 | 164,741 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,325 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,689 |
| Country Chain | 0 | - | 4.96 | 218,677 |
| Countries by Emojis | 0 | - | 4.99 | 242,874 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,719 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,406 |
| Islands by Country #1 | 0 | - | 4.90 | 176,504 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,343 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,661 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,475 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,813,083 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 145,383 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 60,122 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,989 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,413 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,157 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,640 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,628 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,444 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,676 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 745,805 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,957 |
| Himalayan Countries | 0 | - | 4.93 | 140,859 |
| Andean Countries | 0 | - | 4.94 | 85,820 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,932 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,512 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,478 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,702 |
| Danube Countries | 0 | - | 4.97 | 72,565 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,808 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,979 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,463 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,931 |
| European Landlocked Countries | 0 | - | 4.99 | 147,773 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,551 |
| Countries with the Most Species | 0 | - | 4.99 | 103,654 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,652 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,817 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,957 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,930 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,684 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,139 |
| Countries in the Alps | 0 | - | 4.87 | 118,992 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,022 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,151 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,059 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,183 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,137 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,396 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,605 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,001 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,517 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,321 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,955 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,832 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,681 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,935 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,028 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,159 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,742 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,520 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,849 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,355 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,521 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,621 |
| Largest Countries By Category | 0 | - | 4.97 | 159,103 |
| Countries by Countries | 0 | - | 4.97 | 63,815 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,461 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,451 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,238 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,694 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,068 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,423 |
| Island Countries | 0 | - | 4.99 | 713,037 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,283 |
| Northernmost Countries | 0 | - | 4.99 | 364,641 |
| Countries of South America | 0 | - | 5.00 | 934,399 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,677 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,342 |
| "Land" Countries | 0 | - | 4.98 | 339,037 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,800 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,909 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,831 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,778 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,216 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,026 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,393 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,699 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,889 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,635 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,471 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 194,044 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,363 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,635 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 78,872 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,703 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 196,355 |
| Random Countries by Borders | 0 | - | 4.99 | 83,207 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,914 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,524 |
| Countries with Megacities | 0 | - | 4.99 | 267,916 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,181 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,351 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,505 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,455 |
| Countries by Official Language | 0 | - | 4.95 | 196,240 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,972 |
| Countries in their Native Language | 0 | - | 4.99 | 199,971 |
| Independence from Whom | 0 | - | 4.99 | 213,429 |
| Subdivisions by Country | 0 | - | 4.87 | 50,671 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,679 |
| Megadiverse Countries | 0 | - | 4.96 | 149,256 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,149 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,583 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,814 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,262 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,487 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,926 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,297 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,633 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,174 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,802 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,496 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,511 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,222 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,648 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,981 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,764 |
| World Map Quiz | 0 | - | 4.81 | 65,933 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,476 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,825 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,539 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,245 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,717 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,962 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,567 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,675 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,866 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,770 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,957 |
| Widest Countries East to West | 0 | - | 4.92 | 130,865 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,631 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,417 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,568 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,168 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,127 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,622 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,538 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,923 |
| Countries with Double Letters | 0 | - | 4.96 | 97,666 |
| Countries that End in N | 0 | - | 4.95 | 172,661 |
| Countries with Five Letters | 0 | - | 4.96 | 284,694 |
| Countries with Six Letters | 0 | - | 4.94 | 214,990 |
| Countries with W | 0 | - | 4.96 | 161,340 |
| Countries with Z | 0 | - | 4.98 | 293,048 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,700 |
| Countries That End in U | 0 | - | 4.95 | 121,402 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,457 |
| Countries that End in O | 0 | - | 4.92 | 160,381 |
| Countries that End in R | 0 | - | 4.87 | 119,286 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,068 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,178 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 186,384 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,220 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,844 |
| Countries That End in Y | 0 | - | 4.91 | 186,180 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,357 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,438 |
| Countries that End in I | 0 | - | 4.94 | 135,434 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,325 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,151 |
| Countries That End in NIA | 0 | - | 4.92 | 110,166 |
| Countries That End in BIA | 0 | - | 4.93 | 149,749 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,948 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,919 |
| Countries That End in RIA | 0 | - | 4.93 | 127,159 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,555 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,978 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,409 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,872 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,429 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,931 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,472 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,613 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,071 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,742 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,635 |
