| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,668 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,110,627 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 218,384 |
| Random Countries by Borders | 0 | - | 4.99 | 82,904 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,289 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,646,622 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,520 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,863 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,319 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,516 |
| Random Capital to Country | 0 | - | 4.99 | 2,599,066 |
| Random Country to Capital | 0 | - | 4.98 | 926,109 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,775,076 |
| Landlocked Countries | 0 | - | 4.99 | 424,424 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,752 |
| Countries with Four Letters | 0 | - | 4.99 | 425,108 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 386,662 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,561 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,795,741 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,591 |
| Himalayan Countries | 0 | - | 4.94 | 139,740 |
| Andean Countries | 0 | - | 4.94 | 85,168 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,347 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,602 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,918 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,208 |
| Danube Countries | 0 | - | 4.97 | 72,264 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,401 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,693 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,843 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,336 |
| European Landlocked Countries | 0 | - | 4.99 | 147,445 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,070 |
| Countries with the Most Species | 0 | - | 4.99 | 103,473 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,210 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,707 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,819 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,719 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,737 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,126 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,470 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,896 |
| Countries in the Alps | 0 | - | 4.87 | 118,569 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,282 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,583 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,854 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,874 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,798 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,127 |
| Country Chain | 0 | - | 4.96 | 218,193 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,116 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,739 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,332 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,056 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,786 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,656 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,443 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,675 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,765 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,493 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,515 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,506 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,476 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,168 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,818 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,421 |
| Largest Countries By Category | 0 | - | 4.97 | 158,635 |
| Countries by Emojis | 0 | - | 4.99 | 241,414 |
| Countries by Countries | 0 | - | 4.96 | 63,500 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,432 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,146 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,082 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,361 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,643 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,971 |
| Islands by Country #1 | 0 | - | 4.90 | 176,141 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,106 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,429 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,291 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,520 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,322 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,582 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,628 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,509 |
| Name a Valid Country #6 | 0 | - | 4.95 | 143,667 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 738,966 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,157 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,286 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,898 |
| Island Countries | 0 | - | 4.99 | 712,032 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,179 |
| Northernmost Countries | 0 | - | 4.99 | 363,376 |
| Countries of South America | 0 | - | 5.00 | 930,801 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,165 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,173 |
| "Land" Countries | 0 | - | 4.98 | 338,041 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,565 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,594 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,544 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,000 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,798 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,529 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,248 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,524 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,731 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,678 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,381 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,760 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,452 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,778 |
| Countries with Megacities | 0 | - | 4.99 | 266,342 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,488 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,897 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,784 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,006 |
| Countries by Official Language | 0 | - | 4.95 | 195,762 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,290 |
| Countries in their Native Language | 0 | - | 4.99 | 199,544 |
| Independence from Whom | 0 | - | 4.99 | 212,743 |
| Subdivisions by Country | 0 | - | 4.87 | 50,562 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,211 |
| Megadiverse Countries | 0 | - | 4.96 | 135,190 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,755 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,480 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,380 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,179 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,434 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,752 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,896 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,503 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,774 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,222 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,191 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,306 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,374 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,093 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,514 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,629 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,001 |
| World Map Quiz | 0 | - | 4.81 | 65,434 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,578 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,577 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,978 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,939 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,427 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,218 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,284 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,402 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,593 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,617 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,057 |
| Widest Countries East to West | 0 | - | 4.92 | 130,302 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,558 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,101 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,465 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,977 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,856 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,355 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,467 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,862 |
| Countries with Double Letters | 0 | - | 4.96 | 96,794 |
| Countries that End in N | 0 | - | 4.95 | 171,682 |
| Countries with Five Letters | 0 | - | 4.96 | 283,383 |
| Countries with Six Letters | 0 | - | 4.94 | 214,144 |
| Countries with W | 0 | - | 4.96 | 160,740 |
| Countries with Z | 0 | - | 4.98 | 292,118 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,090 |
| Countries That End in U | 0 | - | 4.95 | 121,073 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,895 |
| Countries that End in O | 0 | - | 4.92 | 159,720 |
| Countries that End in R | 0 | - | 4.87 | 119,111 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,856 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,578 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,998 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,711 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,642 |
| Countries That End in Y | 0 | - | 4.91 | 186,025 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,282 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,135 |
| Countries that End in I | 0 | - | 4.94 | 135,253 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,453 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,974 |
| Countries That End in NIA | 0 | - | 4.92 | 109,959 |
| Countries That End in BIA | 0 | - | 4.93 | 149,459 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,391 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,663 |
| Countries That End in RIA | 0 | - | 4.93 | 126,976 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,264 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,253 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,026 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,460 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,027 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,732 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,229 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,508 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,779 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,579 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,585 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,266 |
| Countries that End in L | 0 | - | 4.94 | 157,031 |
