| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,619,321 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 720,027 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,610 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,147 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,399,748 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,100,182 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,219 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,479 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,136 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,380 |
| Countries with Four Letters | 0 | - | 4.99 | 422,049 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,438 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,461 |
| Landlocked Countries | 0 | - | 4.99 | 419,744 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 975,997 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,163 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,329 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 180,449 |
| Country Chain | 0 | - | 4.96 | 216,986 |
| Countries by Emojis | 0 | - | 4.99 | 239,400 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,842 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,315 |
| Islands by Country #1 | 0 | - | 4.88 | 175,203 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,470 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,809 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,682 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,317 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,788 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,414 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,377 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,791 |
| Name a Valid Country #1 | 0 | - | 4.99 | 289,374 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,436 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,328 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,712 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,218 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,336 |
| Himalayan Countries | 0 | - | 4.95 | 137,772 |
| Andean Countries | 0 | - | 4.95 | 84,103 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,341 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,880 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,971 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,449 |
| Danube Countries | 0 | - | 4.97 | 71,746 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,672 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,145 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,811 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,886 |
| European Landlocked Countries | 0 | - | 4.99 | 146,867 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,248 |
| Countries with the Most Species | 0 | - | 4.99 | 103,012 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,406 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,458 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,622 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,376 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,047 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,446 |
| Countries in the Alps | 0 | - | 4.87 | 117,828 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,222 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,553 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,473 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,334 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,214 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,782 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,377 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,262 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,024 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,629 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,526 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,375 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,995 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,263 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,284 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,368 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,120 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,628 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,662 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,767 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,456 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,044 |
| Largest Countries By Category | 0 | - | 4.97 | 157,795 |
| Countries by Countries | 0 | - | 4.96 | 62,930 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,337 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,184 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,417 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,717 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,835 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,807 |
| Island Countries | 0 | - | 4.99 | 710,105 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,002 |
| Northernmost Countries | 0 | - | 4.99 | 360,884 |
| Countries of South America | 0 | - | 5.00 | 924,091 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,752 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,383 |
| "Land" Countries | 0 | - | 4.98 | 335,999 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,810 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,106 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,044 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,712 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,403 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,709 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,869 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,843 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,037 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,705 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,039 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,601 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 135,656 |
| Random Countries by Borders | 0 | - | 4.99 | 82,366 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,902 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 239,553 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,271 |
| Countries with Megacities | 0 | - | 4.99 | 262,490 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,101 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,124 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,403 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,171 |
| Countries by Official Language | 0 | - | 4.95 | 194,803 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,761 |
| Countries in their Native Language | 0 | - | 4.99 | 198,348 |
| Independence from Whom | 0 | - | 4.99 | 211,544 |
| Subdivisions by Country | 0 | - | 4.86 | 50,328 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,859 |
| Megadiverse Countries | 0 | - | 4.96 | 134,827 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,675 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,222 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,794 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,037 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,817 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,435 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,096 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,896 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,531 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,020 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,183 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,764 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,040 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,829 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,207 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,375 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,438 |
| World Map Quiz | 0 | - | 4.81 | 64,735 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 137,661 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,996 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,123 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,663 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,021 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,753 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,592 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,621 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,769 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,906 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,318 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,358 |
| Widest Countries East to West | 0 | - | 4.92 | 129,444 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,406 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,062 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,032 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,584 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,322 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,641 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,280 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,742 |
| Countries with Double Letters | 0 | - | 4.97 | 95,259 |
| Countries that End in N | 0 | - | 4.95 | 170,264 |
| Countries with Five Letters | 0 | - | 4.96 | 281,005 |
| Countries with Six Letters | 0 | - | 4.94 | 212,700 |
| Countries with W | 0 | - | 4.97 | 159,637 |
| Countries with Z | 0 | - | 4.98 | 290,467 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,881 |
| Countries That End in U | 0 | - | 4.95 | 120,473 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,896 |
| Countries that End in O | 0 | - | 4.92 | 159,251 |
| Countries that End in R | 0 | - | 4.87 | 118,771 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,547 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,490 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,253 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,161 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,773 |
| Countries That End in Y | 0 | - | 4.91 | 185,685 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,428 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,524 |
| Countries that End in I | 0 | - | 4.94 | 134,912 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,614 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,624 |
| Countries That End in NIA | 0 | - | 4.92 | 109,573 |
| Countries That End in BIA | 0 | - | 4.93 | 148,919 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,821 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,144 |
| Countries That End in RIA | 0 | - | 4.93 | 126,593 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,730 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,932 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,335 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,715 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,245 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,386 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,744 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,321 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,235 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,245 |
