| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,661,461 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,816 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,966 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,995 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,414 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,277 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,992,652 |
| Landlocked Countries | 0 | - | 4.99 | 427,547 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,129,007 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,219 |
| Countries with Four Letters | 0 | - | 4.99 | 426,613 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,814,510 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,056 |
| Himalayan Countries | 0 | - | 4.93 | 140,952 |
| Andean Countries | 0 | - | 4.94 | 85,865 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,971 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,585 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,518 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,734 |
| Danube Countries | 0 | - | 4.97 | 72,586 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,847 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,000 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,496 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,971 |
| European Landlocked Countries | 0 | - | 4.99 | 147,805 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,577 |
| Countries with the Most Species | 0 | - | 4.99 | 103,661 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,685 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,824 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,965 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,367 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,946 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,732 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,699 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,156 |
| Countries in the Alps | 0 | - | 4.87 | 119,019 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,073 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,213 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,081 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,205 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,174 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,411 |
| Country Chain | 0 | - | 4.96 | 218,709 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,628 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,020 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,529 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,338 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,968 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,846 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,694 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,945 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,046 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,206 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,759 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,663 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,874 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,471 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,585 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,633 |
| Largest Countries By Category | 0 | - | 4.97 | 159,141 |
| Countries by Emojis | 0 | - | 4.99 | 242,933 |
| Countries by Countries | 0 | - | 4.97 | 63,833 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,739 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,494 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,493 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,453 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,716 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,268 |
| Islands by Country #1 | 0 | - | 4.90 | 176,667 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,369 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,690 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,498 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,606 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,474 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,319 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,702 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,702 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,512 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,743 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 746,295 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,885 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,133 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,539 |
| Island Countries | 0 | - | 4.99 | 713,109 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,517 |
| Northernmost Countries | 0 | - | 4.99 | 364,750 |
| Countries of South America | 0 | - | 5.00 | 934,722 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,998 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,082 |
| "Land" Countries | 0 | - | 4.98 | 339,118 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,937 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,852 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,801 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,232 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,048 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,980 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,740 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,920 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,705 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,524 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 194,104 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,398 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,656 |
| Random Countries by Borders | 0 | - | 4.99 | 83,222 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,961 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,633 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,593 |
| Countries with Megacities | 0 | - | 4.99 | 268,054 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,239 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,383 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,563 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,487 |
| Countries by Official Language | 0 | - | 4.95 | 196,288 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,029 |
| Countries in their Native Language | 0 | - | 4.99 | 200,009 |
| Independence from Whom | 0 | - | 4.99 | 213,479 |
| Subdivisions by Country | 0 | - | 4.87 | 50,678 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,731 |
| Megadiverse Countries | 0 | - | 4.96 | 149,587 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,193 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,591 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,833 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,266 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,520 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,943 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,345 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,643 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,196 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,292 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,846 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,510 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,524 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,236 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,658 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,998 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,835 |
| World Map Quiz | 0 | - | 4.81 | 65,964 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,071 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,847 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,584 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,270 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,744 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,016 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,592 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,705 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,886 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,781 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,990 |
| Widest Countries East to West | 0 | - | 4.92 | 130,889 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,447 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,578 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,180 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,258 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,637 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,930 |
| Countries with Double Letters | 0 | - | 4.96 | 97,735 |
| Countries that End in N | 0 | - | 4.95 | 172,726 |
| Countries with Five Letters | 0 | - | 4.96 | 284,769 |
| Countries with Six Letters | 0 | - | 4.94 | 215,063 |
| Countries with W | 0 | - | 4.96 | 161,384 |
| Countries with Z | 0 | - | 4.98 | 293,131 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,754 |
| Countries That End in U | 0 | - | 4.95 | 121,439 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,508 |
| Countries that End in O | 0 | - | 4.92 | 160,410 |
| Countries that End in R | 0 | - | 4.87 | 119,304 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,080 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,225 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,283 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,268 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,943 |
| Countries That End in Y | 0 | - | 4.91 | 186,193 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,464 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,463 |
| Countries that End in I | 0 | - | 4.94 | 135,452 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,409 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,169 |
| Countries That End in NIA | 0 | - | 4.92 | 110,181 |
| Countries That End in BIA | 0 | - | 4.93 | 149,776 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,981 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,932 |
| Countries That End in RIA | 0 | - | 4.93 | 127,183 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,575 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,027 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,439 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,906 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,462 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,944 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,492 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,617 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,095 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,759 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,947 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,659 |
| Countries that End in L | 0 | - | 4.94 | 157,280 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,725 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,388 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,909 |
