| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,565 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,093,640 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,839 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,074 |
| Random Countries by Borders | 0 | - | 4.99 | 81,918 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,946 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,602,033 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,222 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,035 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,752 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,750 |
| Random Capital to Country | 0 | - | 4.99 | 2,583,472 |
| Random Country to Capital | 0 | - | 4.98 | 914,559 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,129,186 |
| Landlocked Countries | 0 | - | 4.99 | 416,215 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,836 |
| Countries with Four Letters | 0 | - | 4.99 | 420,072 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 380,345 |
| Empty World Map without 20 Random Countries | 0 | - | 4.93 | 136,169 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,581 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,718 |
| Himalayan Countries | 0 | - | 4.95 | 136,322 |
| Andean Countries | 0 | - | 4.95 | 83,383 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,645 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,875 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,342 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,947 |
| Danube Countries | 0 | - | 4.97 | 71,350 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,145 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,811 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,068 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,017 |
| European Landlocked Countries | 0 | - | 4.99 | 146,075 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,691 |
| Countries with the Most Species | 0 | - | 4.99 | 99,601 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,839 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,310 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,485 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,862 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,126 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,974 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,779 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,150 |
| Countries in the Alps | 0 | - | 4.86 | 117,277 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,863 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,794 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,225 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,688 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,724 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,216 |
| Country Chain | 0 | - | 4.96 | 216,352 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,935 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,965 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,763 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,296 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,336 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,188 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,685 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,959 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,969 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,627 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,865 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,399 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,149 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,754 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,461 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,789 |
| Largest Countries By Category | 0 | - | 4.97 | 157,200 |
| Countries by Emojis | 0 | - | 4.99 | 237,664 |
| Countries by Countries | 0 | - | 4.96 | 62,554 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,399 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,362 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,815 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,067 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,402 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,044 |
| Islands by Country #1 | 0 | - | 4.87 | 174,771 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,142 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,497 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,477 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,387 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,481 |
| Name a Valid Country #2 | 0 | - | 4.98 | 248,643 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,687 |
| Name a Valid Country #5 | 0 | - | 4.99 | 203,866 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,047 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 715,584 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,493 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,632 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,442 |
| Island Countries | 0 | - | 4.99 | 708,668 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,827 |
| Northernmost Countries | 0 | - | 4.99 | 359,142 |
| Countries of South America | 0 | - | 5.00 | 919,077 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,913 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,238 |
| "Land" Countries | 0 | - | 4.98 | 334,315 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,826 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,657 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,700 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,492 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,078 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,372 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,130 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,874 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,530 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,669 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,071 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,988 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,801 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,159 |
| Countries with Megacities | 0 | - | 4.99 | 248,699 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,024 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,478 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,391 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,430 |
| Countries by Official Language | 0 | - | 4.95 | 193,874 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,347 |
| Countries in their Native Language | 0 | - | 4.99 | 197,514 |
| Independence from Whom | 0 | - | 4.99 | 210,434 |
| Subdivisions by Country | 0 | - | 4.86 | 50,176 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,251 |
| Megadiverse Countries | 0 | - | 4.96 | 134,510 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,709 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,060 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,610 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,939 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,373 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,185 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,501 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,514 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,347 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,797 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,101 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,560 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,659 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,628 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,832 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,181 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,407 |
| World Map Quiz | 0 | - | 4.81 | 63,985 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,143 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,660 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,982 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,619 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,341 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,590 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,221 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,410 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,589 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,125 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,608 |
| Widest Countries East to West | 0 | - | 4.92 | 129,105 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,318 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,598 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,880 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,925 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,941 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,319 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,013 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,660 |
| Countries with Double Letters | 0 | - | 4.96 | 93,841 |
| Countries that End in N | 0 | - | 4.94 | 157,277 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,243 |
| Countries with Six Letters | 0 | - | 4.93 | 210,866 |
| Countries with W | 0 | - | 4.97 | 158,531 |
| Countries with Z | 0 | - | 4.98 | 288,429 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,869 |
| Countries That End in U | 0 | - | 4.95 | 119,671 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,034 |
| Countries that End in O | 0 | - | 4.92 | 158,711 |
| Countries that End in R | 0 | - | 4.87 | 118,422 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,977 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,598 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,651 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,738 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,306 |
| Countries That End in Y | 0 | - | 4.90 | 185,331 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,753 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,011 |
| Countries that End in I | 0 | - | 4.94 | 134,605 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,614 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,371 |
| Countries That End in NIA | 0 | - | 4.92 | 109,238 |
| Countries That End in BIA | 0 | - | 4.93 | 148,472 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,360 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,715 |
| Countries That End in RIA | 0 | - | 4.93 | 126,279 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,267 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,966 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,793 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,148 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,698 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,091 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,372 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,890 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,782 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,952 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,455 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,114 |
