| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,282 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,098 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,741 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,477 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,845,158 |
| Landlocked Countries | 0 | - | 4.99 | 424,752 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 585,708 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,800,609 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,798 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,513 |
| All Countries by Northernmost Point on Land | 0 | - | 4.90 | 127,239 |
| 20 Countries on an Empty Map #1 | 0 | - | 4.94 | 62,750 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,955 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,738 |
| Himalayan Countries | 0 | - | 4.93 | 139,853 |
| Andean Countries | 0 | - | 4.94 | 85,224 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,397 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,708 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,961 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,266 |
| Danube Countries | 0 | - | 4.97 | 72,291 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,444 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,731 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,902 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,403 |
| European Landlocked Countries | 0 | - | 4.99 | 147,482 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,126 |
| Countries with the Most Species | 0 | - | 4.99 | 103,504 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,273 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,719 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,829 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,766 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,500 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,925 |
| Countries in the Alps | 0 | - | 4.87 | 118,631 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,389 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,648 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,891 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,918 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,843 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,154 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,282 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,788 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,354 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,087 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,803 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,674 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,469 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,704 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,796 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,573 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,537 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,608 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,519 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,288 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,902 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,451 |
| Largest Countries By Category | 0 | - | 4.97 | 158,698 |
| Countries by Countries | 0 | - | 4.96 | 63,536 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,137 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,369 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,646 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,642 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,295 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,007 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,868 |
| Pixelated World Map | 0 | - | 5.00 | 143,982 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,445 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,682 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,805 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,682 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,629 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,391 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,103 |
| Island Countries | 0 | - | 4.99 | 712,164 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,548 |
| Northernmost Countries | 0 | - | 4.99 | 363,521 |
| Countries of South America | 0 | - | 5.00 | 931,250 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,580 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,101 |
| "Land" Countries | 0 | - | 4.98 | 338,117 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,875 |
| Countries with Megacities | 0 | - | 4.99 | 266,562 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,583 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,962 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,879 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,068 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,131 |
| Countries by Official Language | 0 | - | 4.95 | 195,819 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,379 |
| Countries in their Native Language | 0 | - | 4.99 | 199,602 |
| Independence from Whom | 0 | - | 4.99 | 212,840 |
| Subdivisions by Country | 0 | - | 4.87 | 50,575 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,276 |
| Megadiverse Countries | 0 | - | 4.96 | 135,210 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,799 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,491 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,397 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,196 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,475 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,781 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,974 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,520 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,783 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,229 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,296 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,326 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,387 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,112 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,528 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,647 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,434 |
| World Map Quiz | 0 | - | 4.81 | 65,531 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,611 |
| Countries by Sports in 60 Seconds | 0 | - | 4.92 | 147,540 |
| Countries by Founding Story | 0 | - | 4.95 | 77,707 |
| Countries by Road Signs | 0 | - | 4.98 | 54,278 |
| Countries That Do Not Border | 0 | - | 4.99 | 60,754 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,043 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,975 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,457 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,310 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,311 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,439 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,633 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,633 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,337 |
| Widest Countries East to West | 0 | - | 4.92 | 130,351 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,574 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,145 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,477 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,997 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,887 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,385 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,469 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,871 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,151 |
| Countries with Double Letters | 0 | - | 4.96 | 96,854 |
| Countries that End in N | 0 | - | 4.95 | 171,739 |
| Countries with Five Letters | 0 | - | 4.96 | 283,472 |
| Countries with Six Letters | 0 | - | 4.94 | 214,214 |
| Countries with W | 0 | - | 4.96 | 160,789 |
| Countries with Z | 0 | - | 4.98 | 292,198 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,139 |
| Countries That End in U | 0 | - | 4.95 | 121,097 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,950 |
| Countries that End in O | 0 | - | 4.92 | 159,740 |
| Countries that End in R | 0 | - | 4.87 | 119,127 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,883 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,649 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,036 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,744 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,671 |
| Countries That End in Y | 0 | - | 4.91 | 186,040 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,336 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,168 |
| Countries that End in I | 0 | - | 4.94 | 135,261 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,501 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,993 |
| Countries That End in NIA | 0 | - | 4.92 | 109,982 |
| Countries That End in BIA | 0 | - | 4.93 | 149,501 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,419 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,690 |
| Countries That End in RIA | 0 | - | 4.93 | 127,001 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,288 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,357 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,062 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,500 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,066 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,758 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,251 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,516 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,808 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,596 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,618 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,299 |
| Countries that End in L | 0 | - | 4.94 | 157,056 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,385 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,324 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,085 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,708 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,326 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,278 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,039 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,367 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,168 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,860 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,140 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,208 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,798 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,174 |
| ALL First-Level Subdivisions of the World With a Map | 0 | - | 5.00 | 149,185 |
| All First-Level Subdivisions of Europe by Proximity | 0 | - | 4.85 | 77,618 |
| Top World Languages on a Map | 0 | - | 4.94 | 103,454 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.99 | 117,421 |
| 407 Islands on the World Map | 0 | - | 4.99 | 35,527 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,073 |
| Smallest Countries with at Least Two Borders | 0 | - | 4.97 | 43,109 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,664 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,105 |
