| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,964 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,132 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,629 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,351 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,808,010 |
| Landlocked Countries | 0 | - | 4.99 | 415,326 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 557,795 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,054,784 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,861 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,683 |
| All Countries by Northernmost Point on Land | 0 | - | 4.89 | 125,365 |
| 20 Countries on an Empty Map #1 | 0 | - | 4.94 | 61,946 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,402 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,280 |
| Himalayan Countries | 0 | - | 4.95 | 135,964 |
| Andean Countries | 0 | - | 4.94 | 83,165 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,484 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,622 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,182 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,825 |
| Danube Countries | 0 | - | 4.97 | 71,261 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,993 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,709 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,863 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,802 |
| European Landlocked Countries | 0 | - | 4.99 | 145,962 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,516 |
| Countries with the Most Species | 0 | - | 4.99 | 95,347 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,642 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,268 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,439 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,064 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,717 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,072 |
| Countries in the Alps | 0 | - | 4.86 | 117,116 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,756 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,586 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,158 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,584 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,376 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,136 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,796 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,895 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,687 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,205 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,273 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,137 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,615 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,878 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,888 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,450 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,797 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,350 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,022 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,248 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,178 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,729 |
| Largest Countries By Category | 0 | - | 4.97 | 157,023 |
| Countries by Countries | 0 | - | 4.96 | 62,441 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,662 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,023 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,376 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,284 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,270 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,936 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,730,563 |
| Pixelated World Map | 0 | - | 5.00 | 142,693 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,975 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,730 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,015 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,525 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,798 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,798 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,774 |
| Island Countries | 0 | - | 4.99 | 708,312 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,662 |
| Northernmost Countries | 0 | - | 4.99 | 358,675 |
| Countries of South America | 0 | - | 5.00 | 917,741 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,105 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,203 |
| "Land" Countries | 0 | - | 4.98 | 334,091 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,899 |
| Countries with Megacities | 0 | - | 4.99 | 248,168 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,785 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,355 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,164 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,292 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,188 |
| Countries by Official Language | 0 | - | 4.95 | 193,178 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,710 |
| Countries in their Native Language | 0 | - | 4.99 | 197,011 |
| Independence from Whom | 0 | - | 4.99 | 210,141 |
| Subdivisions by Country | 0 | - | 4.86 | 50,147 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,060 |
| Megadiverse Countries | 0 | - | 4.96 | 134,444 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,170 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,010 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,545 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,906 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,879 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,123 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,324 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,444 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,300 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,786 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,912 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,516 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,621 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,581 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,795 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,121 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,597 |
| World Map Quiz | 0 | - | 4.81 | 63,791 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,581 |
| Countries by Founding Story | 0 | - | 4.95 | 76,714 |
| Countries by Road Signs | 0 | - | 4.98 | 53,272 |
| Countries That Do Not Border | 0 | - | 4.99 | 59,596 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,774 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,517 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,238 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,333 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,110 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,308 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,501 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,076 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,527 |
| Widest Countries East to West | 0 | - | 4.92 | 129,022 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,284 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,481 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,651 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,863 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,821 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,228 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,650 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,641 |
| Countries With the Tallest People | 0 | - | 4.91 | 94,627 |
| Countries with Double Letters | 0 | - | 4.96 | 93,686 |
| Countries that End in N | 0 | - | 4.94 | 157,147 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,037 |
| Countries with Six Letters | 0 | - | 4.93 | 210,696 |
| Countries with W | 0 | - | 4.97 | 158,420 |
| Countries with Z | 0 | - | 4.98 | 288,245 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,761 |
| Countries That End in U | 0 | - | 4.95 | 119,615 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,875 |
| Countries that End in O | 0 | - | 4.92 | 158,660 |
| Countries that End in R | 0 | - | 4.87 | 118,379 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,934 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,421 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,563 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,652 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,200 |
| Countries That End in Y | 0 | - | 4.90 | 185,289 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,623 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,901 |
| Countries that End in I | 0 | - | 4.94 | 134,544 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,478 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,301 |
| Countries That End in NIA | 0 | - | 4.92 | 109,121 |
| Countries That End in BIA | 0 | - | 4.92 | 147,851 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,261 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,636 |
| Countries That End in RIA | 0 | - | 4.93 | 126,200 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,184 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,729 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,686 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,039 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,587 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,028 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,286 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,800 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,684 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,898 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,348 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,996 |
| Countries that End in L | 0 | - | 4.94 | 156,157 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,149 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,021 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,625 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,457 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,532 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,984 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,633 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,730 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,653 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,030 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,925 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,819 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,245 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,467 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,423 |
| ALL First-Level Subdivisions of the World With a Map | 0 | - | 5.00 | 145,326 |
| All First-Level Subdivisions of Europe by Proximity | 0 | - | 4.84 | 76,507 |
| Top World Languages on a Map | 0 | - | 4.93 | 102,385 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.99 | 115,555 |
| 407 Islands on the World Map | 0 | - | 4.99 | 34,824 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,319 |
| Smallest Countries with at Least Two Borders | 0 | - | 4.96 | 40,385 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,879 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,358 |
