| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,275 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,534 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,552 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,654 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,850,729 |
| Landlocked Countries | 0 | - | 4.99 | 426,555 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 590,061 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,920,332 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,059 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,903 |
| All Countries by Northernmost Point on Land | 0 | - | 4.90 | 127,449 |
| 20 Countries on an Empty Map #1 | 0 | - | 4.94 | 62,875 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,291 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,546 |
| Himalayan Countries | 0 | - | 4.93 | 140,484 |
| Andean Countries | 0 | - | 4.94 | 85,619 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,750 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,220 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,317 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,549 |
| Danube Countries | 0 | - | 4.97 | 72,471 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,681 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,902 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,266 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,737 |
| European Landlocked Countries | 0 | - | 4.99 | 147,671 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,399 |
| Countries with the Most Species | 0 | - | 4.99 | 103,605 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,510 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,791 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,913 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,876 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,616 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,072 |
| Countries in the Alps | 0 | - | 4.87 | 118,858 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,793 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,995 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,011 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,091 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,039 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,322 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,471 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,925 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,464 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,238 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,915 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,782 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,612 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,850 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,949 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,995 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,659 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,584 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,753 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,954 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,307 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,553 |
| Largest Countries By Category | 0 | - | 4.97 | 158,951 |
| Countries by Countries | 0 | - | 4.97 | 63,711 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,333 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,426 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,689 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,173 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,471 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,154 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,807,882 |
| Pixelated World Map | 0 | - | 5.00 | 144,158 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,644 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,793 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,932 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,842 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,971 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,853 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,001 |
| Island Countries | 0 | - | 4.99 | 712,760 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,379 |
| Northernmost Countries | 0 | - | 4.99 | 364,287 |
| Countries of South America | 0 | - | 5.00 | 933,409 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,403 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,000 |
| "Land" Countries | 0 | - | 4.98 | 338,545 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,320 |
| Countries with Megacities | 0 | - | 4.99 | 267,464 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,986 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,228 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,315 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,332 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,402 |
| Countries by Official Language | 0 | - | 4.95 | 196,119 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,783 |
| Countries in their Native Language | 0 | - | 4.99 | 199,842 |
| Independence from Whom | 0 | - | 4.99 | 213,225 |
| Subdivisions by Country | 0 | - | 4.87 | 50,642 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,559 |
| Megadiverse Countries | 0 | - | 4.96 | 145,050 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,032 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,555 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,748 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,238 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,347 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,889 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,183 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,591 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,122 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,275 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,639 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,432 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,464 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,175 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,602 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,915 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,553 |
| World Map Quiz | 0 | - | 4.81 | 65,824 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,757 |
| Countries by Sports in 60 Seconds | 0 | - | 4.92 | 148,261 |
| Countries by Founding Story | 0 | - | 4.95 | 77,855 |
| Countries by Road Signs | 0 | - | 4.98 | 54,393 |
| Countries That Do Not Border | 0 | - | 4.99 | 60,911 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,378 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,156 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,621 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,733 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,483 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,604 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,789 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,725 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,847 |
| Widest Countries East to West | 0 | - | 4.92 | 130,778 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,616 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,305 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,535 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,098 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,040 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,534 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,517 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,906 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,214 |
| Countries with Double Letters | 0 | - | 4.96 | 97,222 |
| Countries that End in N | 0 | - | 4.95 | 172,315 |
| Countries with Five Letters | 0 | - | 4.96 | 284,186 |
| Countries with Six Letters | 0 | - | 4.94 | 214,634 |
| Countries with W | 0 | - | 4.96 | 161,054 |
| Countries with Z | 0 | - | 4.98 | 292,617 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,394 |
| Countries That End in U | 0 | - | 4.95 | 121,248 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,204 |
| Countries that End in O | 0 | - | 4.92 | 160,268 |
| Countries that End in R | 0 | - | 4.87 | 119,216 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,979 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,966 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,226 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,880 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,809 |
| Countries That End in Y | 0 | - | 4.91 | 186,114 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,538 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,327 |
| Countries that End in I | 0 | - | 4.94 | 135,362 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,697 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,091 |
| Countries That End in NIA | 0 | - | 4.92 | 110,098 |
| Countries That End in BIA | 0 | - | 4.93 | 149,644 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,807 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,812 |
| Countries That End in RIA | 0 | - | 4.93 | 127,091 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,447 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,752 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,262 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,716 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,276 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,842 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,370 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,555 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,970 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,675 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,797 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,492 |
| Countries that End in L | 0 | - | 4.94 | 157,183 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,233 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,362 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,576 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,048 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,493 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,529 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,214 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,467 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,336 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,063 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,265 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,261 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,956 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,852 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,294 |
| ALL First-Level Subdivisions of the World With a Map | 0 | - | 5.00 | 149,861 |
| All First-Level Subdivisions of Europe by Proximity | 0 | - | 4.86 | 77,791 |
| Top World Languages on a Map | 0 | - | 4.94 | 104,067 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.99 | 117,708 |
| 407 Islands on the World Map | 0 | - | 4.99 | 35,667 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,179 |
| Smallest Countries with at Least Two Borders | 0 | - | 4.97 | 43,247 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,985 |
