| Countries of Europe Quiz | 0 | - | 5.00 | 3,727,473 |
| Countries of South America | 0 | - | 5.00 | 917,110 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,265 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,882 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,806,288 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,594,811 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,024,628 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,767 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,543 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,298 |
| Landlocked Countries | 0 | - | 4.99 | 414,944 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 556,692 |
| Countries and Capitals of the World With a Map | 0 | - | 5.00 | 65,369 |
| Pixelated World Map | 0 | - | 5.00 | 142,626 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,907 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,699 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,977 |
| Countries of Europe before World War II with a Map | 0 | - | 4.94 | 52,509 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,014,312 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,478 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,123 |
| Himalayan Countries | 0 | - | 4.95 | 135,824 |
| Andean Countries | 0 | - | 4.94 | 83,097 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,420 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,527 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,122 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,778 |
| Danube Countries | 0 | - | 4.97 | 71,219 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,945 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,669 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,774 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,689 |
| European Landlocked Countries | 0 | - | 4.99 | 145,918 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,438 |
| Countries with the Most Species | 0 | - | 4.99 | 95,317 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,583 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,249 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,422 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,037 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,688 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,050 |
| Countries in the Alps | 0 | - | 4.86 | 117,045 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,715 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,511 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,133 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,546 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,332 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,113 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,743 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,866 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,652 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,174 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,255 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,119 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,578 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,852 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,862 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,359 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,761 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,333 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,974 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,040 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,085 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,700 |
| Largest Countries By Category | 0 | - | 4.97 | 156,964 |
| Countries by Countries | 0 | - | 4.96 | 62,403 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,595 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,008 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,369 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,171 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,245 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,903 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,487 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,587 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,536 |
| Island Countries | 0 | - | 4.99 | 708,137 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,232 |
| Northernmost Countries | 0 | - | 4.99 | 358,485 |
| "Land" Countries | 0 | - | 4.98 | 334,001 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,896 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,542 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,320 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,787 |
| Countries with Megacities | 0 | - | 4.99 | 247,950 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,671 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,285 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,053 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,239 |
| Countries by Official Language | 0 | - | 4.95 | 193,057 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,540 |
| Countries in their Native Language | 0 | - | 4.99 | 196,906 |
| Independence from Whom | 0 | - | 4.99 | 210,043 |
| Subdivisions by Country | 0 | - | 4.86 | 50,122 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,992 |
| Megadiverse Countries | 0 | - | 4.97 | 134,017 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,071 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,986 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,499 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,894 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,826 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,095 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,271 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,347 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,275 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,775 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,826 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,486 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,590 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,570 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,763 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,106 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 100,932 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,991 |
| World Map Quiz | 0 | - | 4.81 | 63,714 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 135,476 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,419 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,514 |
| Countries of the World With a Disappearing Map | 0 | - | 5.00 | 111,291 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,286 |
| Countries by Sports in 60 Seconds | 0 | - | 4.91 | 142,019 |
| Countries by Founding Story | 0 | - | 4.95 | 76,673 |
| Countries by Road Signs | 0 | - | 4.98 | 53,247 |
| Countries That Do Not Border | 0 | - | 4.99 | 59,508 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,700 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,456 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,192 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,197 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,070 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,271 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,463 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,042 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,501 |
| Widest Countries East to West | 0 | - | 4.92 | 128,991 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,277 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,424 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,634 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,831 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,777 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,187 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,127 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,632 |
| Countries With the Tallest People | 0 | - | 4.91 | 94,596 |
| Countries with Double Letters | 0 | - | 4.97 | 93,632 |
| Countries that End in N | 0 | - | 4.94 | 157,094 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,964 |
| Countries with Six Letters | 0 | - | 4.93 | 210,625 |
| Countries with W | 0 | - | 4.97 | 158,388 |
| Countries with Z | 0 | - | 4.98 | 288,168 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,716 |
| Countries That End in U | 0 | - | 4.95 | 119,595 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,829 |
| Countries that End in O | 0 | - | 4.92 | 158,633 |
| Countries that End in R | 0 | - | 4.87 | 118,355 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,917 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,358 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,503 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,617 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,165 |
| Countries That End in Y | 0 | - | 4.90 | 185,273 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,569 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,863 |
| Countries that End in I | 0 | - | 4.94 | 134,521 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,408 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,281 |
| Countries That End in NIA | 0 | - | 4.92 | 109,096 |
| Countries That End in BIA | 0 | - | 4.92 | 147,830 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,217 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,611 |
| Countries That End in RIA | 0 | - | 4.93 | 126,181 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,145 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,625 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,643 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,998 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,524 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,010 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,258 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,766 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,656 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,877 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,302 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,959 |
| Countries with the Highest Scrabble Score | 0 | - | 4.97 | 63,126 |
| Countries that End in L | 0 | - | 4.94 | 156,138 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,937 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,017 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,605 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,421 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,502 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,855 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,579 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,377 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,605 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,965 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,885 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,795 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,230 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,453 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,401 |
| Smallest Countries with at Least Two Borders | 0 | - | 4.96 | 38,137 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,330 |
