| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,626,677 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 721,496 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,102,837 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,101 |
| Countries with Four Letters | 0 | - | 4.99 | 422,806 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 165,963 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,574 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,615 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,523 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,724 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,727 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,502,926 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,815 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 182,861 |
| Country Chain | 0 | - | 4.96 | 217,189 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 977,364 |
| Countries by Emojis | 0 | - | 4.99 | 239,943 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,997 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,938 |
| Islands by Country #1 | 0 | - | 4.88 | 175,347 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,574 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,936 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,761 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,209 |
| Name a Valid Country #1 | 0 | - | 4.99 | 290,320 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,942 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,798 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,186 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,583 |
| Landlocked Countries | 0 | - | 4.99 | 421,028 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,771,335 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 240,108 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,013 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,252 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,175 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,795 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,515 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,778 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,250 |
| Small Countries with Large Economies | 0 | - | 4.63 | 90,018 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,284 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,228 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,333 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,936 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,129 |
| Random Countries by Borders | 0 | - | 4.99 | 82,503 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,194 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,354 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,734 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,225 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,610 |
| Island Countries | 0 | - | 4.99 | 710,656 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,998 |
| Himalayan Countries | 0 | - | 4.95 | 138,303 |
| Andean Countries | 0 | - | 4.93 | 84,373 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,593 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,510 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,225 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,626 |
| Danube Countries | 0 | - | 4.97 | 71,900 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,875 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,294 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,092 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,562 |
| European Landlocked Countries | 0 | - | 4.99 | 147,029 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,460 |
| Countries with the Most Species | 0 | - | 4.99 | 103,149 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,612 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,534 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,675 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,468 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,150 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,555 |
| Countries in the Alps | 0 | - | 4.87 | 118,040 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,318 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,834 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,579 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,505 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,380 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,873 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,539 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,399 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,111 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,745 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,585 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,444 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,118 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,384 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,418 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,663 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,213 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,726 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,886 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,452 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,819 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,141 |
| Largest Countries By Category | 0 | - | 4.97 | 158,018 |
| Countries by Countries | 0 | - | 4.96 | 63,081 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,110 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,540 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,237 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,565 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,575 |
| Northernmost Countries | 0 | - | 4.99 | 361,509 |
| Countries of South America | 0 | - | 5.00 | 925,840 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,068 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,873,758 |
| "Land" Countries | 0 | - | 4.98 | 336,990 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 383,801 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 138,204 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,594 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,550 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,626 |
| Countries with Megacities | 0 | - | 4.99 | 263,868 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,475 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,329 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,751 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,379 |
| Countries by Official Language | 0 | - | 4.95 | 195,043 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,107 |
| Countries in their Native Language | 0 | - | 4.99 | 198,552 |
| Independence from Whom | 0 | - | 4.99 | 211,857 |
| Subdivisions by Country | 0 | - | 4.86 | 50,385 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,547 |
| Megadiverse Countries | 0 | - | 4.96 | 134,926 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,908 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,287 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,869 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,075 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,988 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,529 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,327 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,972 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,593 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,051 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,462 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,818 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,129 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,907 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,292 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,438 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,882 |
| World Map Quiz | 0 | - | 4.81 | 64,950 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,711 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,250 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,886 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,159 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,881 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,930 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,796 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,920 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,213 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,388 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,498 |
| Widest Countries East to West | 0 | - | 4.92 | 129,561 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,425 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,253 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,086 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,686 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,473 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,759 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,332 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,779 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 336,805 |
| Countries with Double Letters | 0 | - | 4.96 | 95,936 |
| Countries that End in N | 0 | - | 4.95 | 170,842 |
| Countries with Five Letters | 0 | - | 4.96 | 281,956 |
| Countries with Six Letters | 0 | - | 4.94 | 213,261 |
| Countries with W | 0 | - | 4.97 | 160,112 |
| Countries with Z | 0 | - | 4.98 | 291,130 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,473 |
| Countries That End in U | 0 | - | 4.95 | 120,730 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,241 |
| Countries that End in O | 0 | - | 4.92 | 159,430 |
| Countries that End in R | 0 | - | 4.87 | 118,897 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,665 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,845 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,537 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,372 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,268 |
| Countries That End in Y | 0 | - | 4.91 | 185,804 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,728 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,721 |
| Countries that End in I | 0 | - | 4.94 | 135,027 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,897 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,748 |
| Countries That End in NIA | 0 | - | 4.92 | 109,697 |
| Countries That End in BIA | 0 | - | 4.93 | 149,090 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,974 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,305 |
| Countries That End in RIA | 0 | - | 4.93 | 126,730 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,898 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,295 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,531 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,934 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,505 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,502 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,917 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,411 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,407 |
