| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,586,091 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 711,095 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,042 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,010 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,175 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,758 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,128 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,890,514 |
| Landlocked Countries | 0 | - | 4.99 | 413,275 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,087,304 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,643 |
| Countries with Four Letters | 0 | - | 4.99 | 418,345 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,713,519 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,429 |
| Himalayan Countries | 0 | - | 4.95 | 135,211 |
| Andean Countries | 0 | - | 4.94 | 82,756 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,166 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,108 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,832 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,543 |
| Danube Countries | 0 | - | 4.97 | 71,044 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,707 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,498 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,392 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,317 |
| European Landlocked Countries | 0 | - | 4.99 | 145,714 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,141 |
| Countries with the Most Species | 0 | - | 4.99 | 95,223 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,286 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,191 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,356 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,246 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,938 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,377 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,548 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,919 |
| Countries in the Alps | 0 | - | 4.87 | 116,766 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,524 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,181 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,983 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,388 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,112 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,967 |
| Country Chain | 0 | - | 4.96 | 215,646 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,527 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,725 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,066 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,019 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,182 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,021 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,414 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,713 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,719 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,994 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,608 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,235 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,731 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,075 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,526 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,574 |
| Largest Countries By Category | 0 | - | 4.97 | 156,692 |
| Countries by Emojis | 0 | - | 4.99 | 236,029 |
| Countries by Countries | 0 | - | 4.96 | 62,223 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,074 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,848 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,322 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,952 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,316 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,721 |
| Islands by Country #1 | 0 | - | 4.87 | 174,445 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,879 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,252 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,317 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,680 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,314 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,711 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,248 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,278 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,441 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,701 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,322 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,457 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,003 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,550 |
| Island Countries | 0 | - | 4.99 | 707,468 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,011 |
| Northernmost Countries | 0 | - | 4.99 | 357,532 |
| Countries of South America | 0 | - | 5.00 | 914,104 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,654 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,991 |
| "Land" Countries | 0 | - | 4.98 | 333,550 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,384 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,418 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,304 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,316 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,809 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,347 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,615 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,605 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,451 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,699 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,223 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,370 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,575 |
| Random Countries by Borders | 0 | - | 4.99 | 81,631 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,146 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,990 |
| Countries with Megacities | 0 | - | 4.99 | 246,509 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,908 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,793 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,363 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,752 |
| Countries by Official Language | 0 | - | 4.95 | 192,697 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,024 |
| Countries in their Native Language | 0 | - | 4.99 | 196,555 |
| Independence from Whom | 0 | - | 4.99 | 209,590 |
| Subdivisions by Country | 0 | - | 4.86 | 50,049 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,676 |
| Megadiverse Countries | 0 | - | 4.97 | 133,864 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,731 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,903 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,404 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,600 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,970 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,829 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,115 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,200 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,731 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,495 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,396 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,471 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,485 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,645 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,003 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,472 |
| World Map Quiz | 0 | - | 4.81 | 63,444 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,473 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,284 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,270 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,938 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,902 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,634 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,822 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,027 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,234 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,920 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,303 |
| Widest Countries East to West | 0 | - | 4.92 | 128,569 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,209 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,162 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,546 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,666 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,588 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,002 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,045 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,565 |
| Countries with Double Letters | 0 | - | 4.97 | 93,306 |
| Countries that End in N | 0 | - | 4.94 | 156,368 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,598 |
| Countries with Six Letters | 0 | - | 4.93 | 210,281 |
| Countries with W | 0 | - | 4.97 | 158,175 |
| Countries with Z | 0 | - | 4.98 | 287,785 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,496 |
| Countries That End in U | 0 | - | 4.95 | 119,489 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,468 |
| Countries that End in O | 0 | - | 4.92 | 158,522 |
| Countries that End in R | 0 | - | 4.87 | 118,245 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,844 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,946 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,268 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,451 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,911 |
| Countries That End in Y | 0 | - | 4.90 | 185,181 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,296 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,618 |
| Countries that End in I | 0 | - | 4.94 | 134,373 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,119 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,175 |
| Countries That End in NIA | 0 | - | 4.92 | 108,968 |
| Countries That End in BIA | 0 | - | 4.92 | 147,670 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,023 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,445 |
| Countries That End in RIA | 0 | - | 4.93 | 126,052 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,970 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,113 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,485 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,862 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,318 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,908 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,083 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,609 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,462 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,800 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,084 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,766 |
| Countries that End in L | 0 | - | 4.94 | 155,688 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,979 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,975 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,494 |
