| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,624,957 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 721,139 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,848 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,461 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,555 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,659 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,661 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,479,909 |
| Landlocked Countries | 0 | - | 4.99 | 420,786 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,102,250 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,981 |
| Countries with Four Letters | 0 | - | 4.99 | 422,617 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,769,293 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,853 |
| Himalayan Countries | 0 | - | 4.95 | 138,190 |
| Andean Countries | 0 | - | 4.95 | 84,315 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,540 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,422 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,168 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,597 |
| Danube Countries | 0 | - | 4.97 | 71,860 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,833 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,264 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,027 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,485 |
| European Landlocked Countries | 0 | - | 4.99 | 147,000 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,409 |
| Countries with the Most Species | 0 | - | 4.99 | 103,123 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,567 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,521 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,669 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,746 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,457 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 182,675 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,132 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,525 |
| Countries in the Alps | 0 | - | 4.87 | 117,992 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,871 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,776 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,557 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,471 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,341 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,847 |
| Country Chain | 0 | - | 4.96 | 217,132 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,494 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,364 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,093 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,720 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,573 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,428 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,089 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,365 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,387 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,597 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,189 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,712 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,851 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,312 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,741 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,127 |
| Largest Countries By Category | 0 | - | 4.97 | 157,972 |
| Countries by Emojis | 0 | - | 4.99 | 239,808 |
| Countries by Countries | 0 | - | 4.96 | 63,048 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,969 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,792 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,493 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,227 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,522 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,537 |
| Islands by Country #1 | 0 | - | 4.88 | 175,315 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,556 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,911 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,745 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,859 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,423 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,120 |
| Name a Valid Country #1 | 0 | - | 4.99 | 290,085 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,826 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,686 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,092 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,494 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,495 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,123 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,414 |
| Island Countries | 0 | - | 4.99 | 710,531 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,219 |
| Northernmost Countries | 0 | - | 4.99 | 361,356 |
| Countries of South America | 0 | - | 5.00 | 925,398 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,440 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,685 |
| "Land" Countries | 0 | - | 4.98 | 336,806 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,974 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,222 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,144 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,770 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,490 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,414 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,730 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,226 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,170 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,137 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,255 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,875 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,109 |
| Random Countries by Borders | 0 | - | 4.99 | 82,471 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,128 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,553 |
| Countries with Megacities | 0 | - | 4.99 | 263,628 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,387 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,295 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,666 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,332 |
| Countries by Official Language | 0 | - | 4.95 | 194,989 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,016 |
| Countries in their Native Language | 0 | - | 4.99 | 198,496 |
| Independence from Whom | 0 | - | 4.99 | 211,769 |
| Subdivisions by Country | 0 | - | 4.86 | 50,376 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,038 |
| Megadiverse Countries | 0 | - | 4.96 | 134,903 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,834 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,275 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,857 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,065 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,947 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,497 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,254 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,952 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,577 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,047 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,397 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,802 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,113 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,886 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,261 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,426 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,777 |
| World Map Quiz | 0 | - | 4.81 | 64,905 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,538 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,215 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,831 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,121 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,850 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,843 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,754 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,888 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,191 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,367 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,463 |
| Widest Countries East to West | 0 | - | 4.92 | 129,529 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,420 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,209 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,073 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,653 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,437 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,724 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,322 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,771 |
| Countries with Double Letters | 0 | - | 4.97 | 95,748 |
| Countries that End in N | 0 | - | 4.95 | 170,712 |
| Countries with Five Letters | 0 | - | 4.96 | 281,761 |
| Countries with Six Letters | 0 | - | 4.94 | 213,126 |
| Countries with W | 0 | - | 4.97 | 160,009 |
| Countries with Z | 0 | - | 4.98 | 290,969 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,355 |
| Countries That End in U | 0 | - | 4.95 | 120,657 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,158 |
| Countries that End in O | 0 | - | 4.92 | 159,381 |
| Countries that End in R | 0 | - | 4.87 | 118,862 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,628 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,754 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,417 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,290 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,905 |
| Countries That End in Y | 0 | - | 4.91 | 185,781 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,607 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,669 |
| Countries that End in I | 0 | - | 4.94 | 134,993 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,795 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,712 |
| Countries That End in NIA | 0 | - | 4.92 | 109,657 |
| Countries That End in BIA | 0 | - | 4.93 | 149,039 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,923 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,262 |
| Countries That End in RIA | 0 | - | 4.93 | 126,693 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,836 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,219 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,480 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,869 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,430 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,467 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,866 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,390 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,358 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,321 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,088 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,792 |
| Countries that End in L | 0 | - | 4.94 | 156,704 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,979 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,221 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,929 |
