| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,931 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,104,820 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 217,311 |
| Random Countries by Borders | 0 | - | 4.99 | 82,601 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,371 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,631,383 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,264 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,835 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,746 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,880 |
| Random Capital to Country | 0 | - | 4.99 | 2,594,128 |
| Random Country to Capital | 0 | - | 4.98 | 922,452 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,570,394 |
| Landlocked Countries | 0 | - | 4.99 | 421,794 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,461 |
| Countries with Four Letters | 0 | - | 4.99 | 423,217 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 384,586 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 138,565 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,777,649 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,368 |
| Himalayan Countries | 0 | - | 4.95 | 138,644 |
| Andean Countries | 0 | - | 4.93 | 84,565 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,756 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,759 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,389 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,778 |
| Danube Countries | 0 | - | 4.97 | 71,989 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,991 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,406 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,268 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,746 |
| European Landlocked Countries | 0 | - | 4.99 | 147,125 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,611 |
| Countries with the Most Species | 0 | - | 4.99 | 103,223 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,734 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,577 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,715 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,013 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,529 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,258 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,212 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,643 |
| Countries in the Alps | 0 | - | 4.87 | 118,184 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,006 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,004 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,632 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,583 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,491 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,937 |
| Country Chain | 0 | - | 4.96 | 217,364 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,658 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,473 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,169 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,827 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,644 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,510 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,209 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,452 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,503 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,857 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,292 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,544 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,051 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,850 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,053 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,212 |
| Largest Countries By Category | 0 | - | 4.97 | 158,188 |
| Countries by Emojis | 0 | - | 4.99 | 240,289 |
| Countries by Countries | 0 | - | 4.96 | 63,200 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,088 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,639 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,663 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,278 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,560 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,664 |
| Islands by Country #1 | 0 | - | 4.88 | 175,449 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,619 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,012 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,796 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,571 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,072 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,374 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,535 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,569 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,902 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 722,475 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,457 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,462 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,100 |
| Island Countries | 0 | - | 4.99 | 710,983 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,668 |
| Northernmost Countries | 0 | - | 4.99 | 361,890 |
| Countries of South America | 0 | - | 5.00 | 927,170 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,613 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,803 |
| "Land" Countries | 0 | - | 4.98 | 337,288 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,131 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,312 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,253 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,845 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,584 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,249 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,899 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,327 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,609 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,521 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,572 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,091 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,180 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,841 |
| Countries with Megacities | 0 | - | 4.99 | 264,454 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,704 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,449 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,961 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,513 |
| Countries by Official Language | 0 | - | 4.95 | 195,221 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,320 |
| Countries in their Native Language | 0 | - | 4.99 | 199,012 |
| Independence from Whom | 0 | - | 4.99 | 212,054 |
| Subdivisions by Country | 0 | - | 4.86 | 50,425 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,698 |
| Megadiverse Countries | 0 | - | 4.96 | 135,000 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,054 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,339 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,229 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,096 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,117 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,585 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,446 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,021 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,642 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,139 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,653 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,866 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,195 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,952 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,341 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,483 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,138 |
| World Map Quiz | 0 | - | 4.81 | 65,058 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,213 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,340 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,054 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,265 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,980 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,152 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,873 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,995 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,285 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,433 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,561 |
| Widest Countries East to West | 0 | - | 4.92 | 129,628 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,448 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,360 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,115 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,758 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,581 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,853 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,369 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,795 |
| Countries with Double Letters | 0 | - | 4.96 | 96,194 |
| Countries that End in N | 0 | - | 4.95 | 171,070 |
| Countries with Five Letters | 0 | - | 4.96 | 282,370 |
| Countries with Six Letters | 0 | - | 4.94 | 213,498 |
| Countries with W | 0 | - | 4.97 | 160,295 |
| Countries with Z | 0 | - | 4.98 | 291,396 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,662 |
| Countries That End in U | 0 | - | 4.95 | 120,828 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,422 |
| Countries that End in O | 0 | - | 4.92 | 159,495 |
| Countries that End in R | 0 | - | 4.87 | 118,954 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,712 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,040 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,667 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,454 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,368 |
| Countries That End in Y | 0 | - | 4.91 | 185,859 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,881 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,828 |
| Countries that End in I | 0 | - | 4.94 | 135,075 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,059 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,809 |
| Countries That End in NIA | 0 | - | 4.92 | 109,768 |
| Countries That End in BIA | 0 | - | 4.93 | 149,176 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,086 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,403 |
| Countries That End in RIA | 0 | - | 4.93 | 126,795 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,999 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,538 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,672 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,077 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,631 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,562 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,000 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,436 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,507 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,405 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,261 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,962 |
| Countries that End in L | 0 | - | 4.94 | 156,818 |
