| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,655,202 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,909,540 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,126,050 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,748 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,369 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,583 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,770 |
| Countries with Four Letters | 0 | - | 4.99 | 426,021 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,131 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,016 |
| Landlocked Countries | 0 | - | 4.99 | 426,347 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,132 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,492 |
| Country Chain | 0 | - | 4.96 | 218,519 |
| Countries by Emojis | 0 | - | 4.99 | 242,589 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,624 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,952 |
| Islands by Country #1 | 0 | - | 4.90 | 176,405 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,276 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,599 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,423 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,806,971 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,193 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,144 |
| Name a Valid Country #1 | 0 | - | 4.99 | 295,555 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,320 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,316 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,168 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,374 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 743,627 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,474 |
| Himalayan Countries | 0 | - | 4.93 | 140,425 |
| Andean Countries | 0 | - | 4.94 | 85,566 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,719 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,163 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,279 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,520 |
| Danube Countries | 0 | - | 4.97 | 72,453 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,665 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,886 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,228 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,701 |
| European Landlocked Countries | 0 | - | 4.99 | 147,649 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,366 |
| Countries with the Most Species | 0 | - | 4.99 | 103,593 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,475 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,788 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,904 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,868 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,605 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,054 |
| Countries in the Alps | 0 | - | 4.87 | 118,835 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,742 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,963 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,995 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,070 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,009 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,299 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,454 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,901 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,453 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,220 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,906 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,769 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,590 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,833 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,928 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,943 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,646 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,029 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,728 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,888 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,254 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,544 |
| Largest Countries By Category | 0 | - | 4.97 | 158,928 |
| Countries by Countries | 0 | - | 4.96 | 63,688 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,309 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,420 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,685 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,132 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,810 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,807 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,923 |
| Island Countries | 0 | - | 4.99 | 712,709 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,208 |
| Northernmost Countries | 0 | - | 4.99 | 364,207 |
| Countries of South America | 0 | - | 5.00 | 933,221 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,165 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,568 |
| "Land" Countries | 0 | - | 4.98 | 338,503 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,799 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,755 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,694 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,131 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,964 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,890 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,542 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,751 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,302 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,204 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,824 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,185 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,574 |
| Random Countries by Borders | 0 | - | 4.99 | 83,123 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,728 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,590 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,280 |
| Countries with Megacities | 0 | - | 4.99 | 267,360 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,952 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,208 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,268 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,312 |
| Countries by Official Language | 0 | - | 4.95 | 196,081 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,736 |
| Countries in their Native Language | 0 | - | 4.99 | 199,808 |
| Independence from Whom | 0 | - | 4.99 | 213,178 |
| Subdivisions by Country | 0 | - | 4.87 | 50,636 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,534 |
| Megadiverse Countries | 0 | - | 4.96 | 139,486 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,005 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,552 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,737 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,234 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,330 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,878 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,163 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,584 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,104 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,268 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,617 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,407 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,458 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,167 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,600 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,900 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,468 |
| World Map Quiz | 0 | - | 4.81 | 65,798 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,108 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,468 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,745 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,348 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,143 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,607 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,690 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,475 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,590 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,784 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,715 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,815 |
| Widest Countries East to West | 0 | - | 4.92 | 130,761 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,610 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,293 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,529 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,089 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,022 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,513 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,514 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,902 |
| Countries with Double Letters | 0 | - | 4.96 | 97,177 |
| Countries that End in N | 0 | - | 4.95 | 172,117 |
| Countries with Five Letters | 0 | - | 4.96 | 284,125 |
| Countries with Six Letters | 0 | - | 4.94 | 214,595 |
| Countries with W | 0 | - | 4.96 | 161,025 |
| Countries with Z | 0 | - | 4.98 | 292,562 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,364 |
| Countries That End in U | 0 | - | 4.95 | 121,233 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,179 |
| Countries that End in O | 0 | - | 4.92 | 160,253 |
| Countries that End in R | 0 | - | 4.87 | 119,207 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,975 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,935 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,209 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,871 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,794 |
| Countries That End in Y | 0 | - | 4.91 | 186,105 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,516 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,314 |
| Countries that End in I | 0 | - | 4.94 | 135,345 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,678 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,086 |
| Countries That End in NIA | 0 | - | 4.92 | 110,090 |
| Countries That End in BIA | 0 | - | 4.93 | 149,619 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,662 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,804 |
| Countries That End in RIA | 0 | - | 4.93 | 127,083 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,436 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,694 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,241 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,690 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,242 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,833 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,358 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,550 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,948 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,666 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,777 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,475 |
| Countries that End in L | 0 | - | 4.94 | 157,170 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,176 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,357 |
