| Countries of Europe Quiz | 0 | - | 5.00 | 3,205,127 |
| Countries of South America | 0 | - | 5.00 | 804,780 |
| Countries of Oceania | 0 | - | 5.00 | 907,040 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,598,898 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 135,606 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,500,844 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 331,239 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,140,496 |
| Members of the Arab League | 0 | - | 4.85 | 65,112 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,310 |
| Himalayan Countries | 0 | - | 4.94 | 107,294 |
| Andean Countries | 0 | - | 4.91 | 59,681 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,755 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,448 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,827 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,636 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,959 |
| Danube Countries | 0 | - | 4.96 | 57,059 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,081 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,169 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,262 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,091 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,384 |
| European Landlocked Countries | 0 | - | 4.99 | 136,753 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,498 |
| Countries with the Most Species | 0 | - | 4.99 | 89,761 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,990 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,915 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,220 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,812 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,736 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,997 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,660 |
| Countries in the Alps | 0 | - | 4.84 | 103,493 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,105 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,726 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,062 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,132 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,638 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,101 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,264 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,583 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,585 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,181 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,941 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,888 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,914 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,318 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,455 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,028 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,779 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,765 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,845 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 200,436 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,545 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,667 |
| Largest Countries By Category | 0 | - | 4.97 | 145,992 |
| African Island Countries | 0 | - | 4.96 | 90,624 |
| Countries by Countries | 0 | - | 4.96 | 55,304 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,652 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,059 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 45,000 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,170 |
| Islands by Country #1 | 0 | - | 4.87 | 164,496 |
| Countries of North America Quiz | 0 | - | 5.00 | 891,751 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,584 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 360,257 |
| Island Countries Quiz | 0 | - | 4.99 | 666,114 |
| Biggest Countries by Area | 0 | - | 5.00 | 942,755 |
| Northernmost Countries | 0 | - | 4.99 | 329,976 |
| Richest Island Countries | 0 | - | 4.87 | 88,905 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 128,075 |
| Countries with Megacities | 0 | - | 4.99 | 200,461 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 174,047 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,269 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,417 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,269 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 251,384 |
| Countries by Official Language | 0 | - | 4.96 | 174,506 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,836 |
| Countries in their Native Language | 0 | - | 4.98 | 179,655 |
| Independence from Whom | 0 | - | 4.99 | 188,041 |
| Subdivisions by Country | 0 | - | 4.82 | 46,759 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,929 |
| Megadiverse Countries | 0 | - | 4.96 | 126,288 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,819 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,278 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,685 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,578 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,625 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,097 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,801 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,485 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,728 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,669 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,038 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,698 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,213 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,132 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,770 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 84,975 |
| World Map Quiz | 0 | - | 4.91 | 50,769 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,865 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,342 |
| Countries by Founding Story | 0 | - | 4.93 | 55,584 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,943 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,150 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,402 |
| Countries With the Most Languages | 0 | - | 4.91 | 176,353 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,382 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,660 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,742 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,751 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,234 |
| Widest Countries East to West | 0 | - | 4.93 | 120,188 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,041 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,041 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,526 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,089 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,302 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,234 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,898 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,686 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,298 |
| Countries with Double Letters | 0 | - | 4.96 | 70,960 |
| Countries that End in N | 0 | - | 4.94 | 135,193 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 232,526 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,687 |
| Countries with W | 0 | - | 4.96 | 125,009 |
| Countries with Z | 0 | - | 4.98 | 262,523 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,975 |
| Countries That End in U | 0 | - | 4.95 | 108,951 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 91,659 |
| Countries that End in O | 0 | - | 4.92 | 148,288 |
| Countries that End in R | 0 | - | 4.85 | 97,116 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,846 |
| Countries Ending in "IA" | 0 | - | 4.99 | 173,233 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,207 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,323 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,271 |
| Countries That End in Y | 0 | - | 4.90 | 162,164 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,375 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 121,970 |
| Countries that End in I | 0 | - | 4.92 | 115,008 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,053 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,116 |
| Countries That End in NIA | 0 | - | 4.93 | 101,521 |
| Countries That End in BIA | 0 | - | 4.91 | 126,944 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,626 |
| Countries Whose Names Start with Saint | 0 | - | 4.89 | 110,584 |
| Countries That End in RIA | 0 | - | 4.90 | 101,617 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,301 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,494 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,040 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,108 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,689 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,461 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,688 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,417 |
| Countries with the Word "And" | 0 | - | 4.98 | 84,539 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,920 |
| Countries that End in L | 0 | - | 4.95 | 135,458 |
| "Land" Countries | 0 | - | 4.98 | 291,632 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,756 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 79,393 |
| City to Country Quiz #1 | 0 | - | 4.94 | 135,013 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,791 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,280 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 210,175 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 169,385 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,377 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,280 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,576 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,867 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,370 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,983 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,980 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,099 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,323,089 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 352,235 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,100,399 |
| One Border Countries | 0 | - | 4.98 | 413,687 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,446,076 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,548 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,019 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 247,240 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,073 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 103,995 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 71,712 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 51,087 |
| Countries by National Anthem | 0 | - | 4.95 | 62,098 |
| NATO Countries Quiz | 0 | - | 4.98 | 228,185 |
| EU Countries Quiz | 0 | - | 4.99 | 230,307 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 145,724 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,216 |
| Countries That Use the Euro | 0 | - | 4.93 | 65,116 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 228,420 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 233,450 |
| German-Speaking Countries | 0 | - | 4.88 | 118,044 |
| Countries with Wild Tigers | 0 | - | 4.95 | 112,072 |
