| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,603,349 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 715,943 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,319 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,118 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,797 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,635 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,809 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,151,452 |
| Landlocked Countries | 0 | - | 4.99 | 416,513 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,083 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,970 |
| Countries with Four Letters | 0 | - | 4.99 | 420,232 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,739,544 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,862 |
| Himalayan Countries | 0 | - | 4.95 | 136,439 |
| Andean Countries | 0 | - | 4.95 | 83,451 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,721 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,949 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,396 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,997 |
| Danube Countries | 0 | - | 4.97 | 71,379 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,190 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,839 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,124 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,082 |
| European Landlocked Countries | 0 | - | 4.99 | 146,115 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,738 |
| Countries with the Most Species | 0 | - | 4.99 | 101,252 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,870 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,322 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,502 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,944 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,144 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 170,100 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,798 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,172 |
| Countries in the Alps | 0 | - | 4.86 | 117,307 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,883 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,854 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,242 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,730 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,806 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,243 |
| Country Chain | 0 | - | 4.96 | 216,385 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,966 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,988 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,789 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,320 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,351 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,197 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,709 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,984 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,996 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,676 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,879 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,419 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,218 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,914 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,531 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,813 |
| Largest Countries By Category | 0 | - | 4.97 | 157,230 |
| Countries by Emojis | 0 | - | 4.99 | 237,739 |
| Countries by Countries | 0 | - | 4.96 | 62,580 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,424 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,565 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,859 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,075 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,071 |
| Islands by Country #1 | 0 | - | 4.87 | 174,806 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,168 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,515 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,492 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,946 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,242 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,616 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,849 |
| Name a Valid Country #2 | 0 | - | 4.98 | 248,932 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,927 |
| Name a Valid Country #5 | 0 | - | 4.99 | 204,557 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,226 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,683 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,779 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,660 |
| Island Countries | 0 | - | 4.99 | 708,754 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,160 |
| Northernmost Countries | 0 | - | 4.99 | 359,295 |
| Countries of South America | 0 | - | 5.00 | 919,474 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,386 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,096 |
| "Land" Countries | 0 | - | 4.98 | 334,545 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,868 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,682 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,717 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,509 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,098 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,068 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,167 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,897 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,623 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,756 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,150 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,040 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,155 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,821 |
| Random Countries by Borders | 0 | - | 4.99 | 81,935 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,058 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,233 |
| Countries with Megacities | 0 | - | 4.99 | 248,859 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,085 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,522 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,448 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,473 |
| Countries by Official Language | 0 | - | 4.95 | 193,971 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,477 |
| Countries in their Native Language | 0 | - | 4.99 | 197,598 |
| Independence from Whom | 0 | - | 4.99 | 210,759 |
| Subdivisions by Country | 0 | - | 4.86 | 50,190 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,297 |
| Megadiverse Countries | 0 | - | 4.96 | 134,526 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,798 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,072 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,620 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,946 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,422 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,207 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,557 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,535 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,362 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,804 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,141 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,577 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,680 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,634 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,847 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,195 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,496 |
| World Map Quiz | 0 | - | 4.81 | 64,057 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,289 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,675 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,033 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,651 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,379 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,663 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,251 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,447 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,609 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,138 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,627 |
| Widest Countries East to West | 0 | - | 4.92 | 129,127 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,324 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,628 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,905 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,943 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,960 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,340 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,073 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,668 |
| Countries with Double Letters | 0 | - | 4.96 | 94,056 |
| Countries that End in N | 0 | - | 4.95 | 164,630 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,492 |
| Countries with Six Letters | 0 | - | 4.93 | 211,060 |
| Countries with W | 0 | - | 4.97 | 158,754 |
| Countries with Z | 0 | - | 4.98 | 288,672 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,989 |
| Countries That End in U | 0 | - | 4.95 | 119,873 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,118 |
| Countries that End in O | 0 | - | 4.92 | 158,829 |
| Countries that End in R | 0 | - | 4.87 | 118,484 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,066 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,689 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,710 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,793 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,354 |
| Countries That End in Y | 0 | - | 4.90 | 185,399 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,801 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,057 |
| Countries that End in I | 0 | - | 4.94 | 134,650 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,668 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,395 |
| Countries That End in NIA | 0 | - | 4.92 | 109,280 |
| Countries That End in BIA | 0 | - | 4.93 | 148,536 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,407 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,750 |
| Countries That End in RIA | 0 | - | 4.93 | 126,319 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,309 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,040 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,840 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,180 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,754 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,131 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,421 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,923 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,819 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,986 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,499 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,174 |
| Countries that End in L | 0 | - | 4.94 | 156,268 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,805 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,058 |
