| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,825 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,723 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,676 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,579 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,815,886 |
| Landlocked Countries | 0 | - | 4.99 | 417,197 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 563,370 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,206,043 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,257 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,291 |
| All Countries by Northernmost Point on Land | 0 | - | 4.89 | 125,776 |
| 20 Countries on an Empty Map #1 | 0 | - | 4.94 | 62,122 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,981 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,192 |
| Himalayan Countries | 0 | - | 4.95 | 136,741 |
| Andean Countries | 0 | - | 4.95 | 83,591 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,852 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,144 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,515 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,117 |
| Danube Countries | 0 | - | 4.97 | 71,483 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,294 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,891 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,283 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,276 |
| European Landlocked Countries | 0 | - | 4.99 | 146,187 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,859 |
| Countries with the Most Species | 0 | - | 4.99 | 102,338 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,992 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,353 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,533 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,203 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,847 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,228 |
| Countries in the Alps | 0 | - | 4.86 | 117,421 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,957 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,027 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,295 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,797 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,894 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,313 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,061 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,034 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,856 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,389 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,390 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,232 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,781 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,045 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,051 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,828 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,933 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,463 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,297 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,315 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,727 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,870 |
| Largest Countries By Category | 0 | - | 4.97 | 157,350 |
| Countries by Countries | 0 | - | 4.96 | 62,656 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,945 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,101 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,417 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,926 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,451 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,137 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,744,714 |
| Pixelated World Map | 0 | - | 5.00 | 142,954 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,256 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,946 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,169 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,727 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,459 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,058 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,165 |
| Island Countries | 0 | - | 4.99 | 709,061 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,021 |
| Northernmost Countries | 0 | - | 4.99 | 359,673 |
| Countries of South America | 0 | - | 5.00 | 920,442 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,977 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,598 |
| "Land" Countries | 0 | - | 4.98 | 335,078 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,471 |
| Countries with Megacities | 0 | - | 4.99 | 249,376 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,320 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,653 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,642 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,626 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,557 |
| Countries by Official Language | 0 | - | 4.95 | 194,206 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,014 |
| Countries in their Native Language | 0 | - | 4.99 | 197,811 |
| Independence from Whom | 0 | - | 4.99 | 210,948 |
| Subdivisions by Country | 0 | - | 4.86 | 50,219 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,434 |
| Megadiverse Countries | 0 | - | 4.96 | 134,595 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,972 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,104 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,658 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,960 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,509 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,266 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,685 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,590 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,400 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,818 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,456 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,609 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,709 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,681 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,890 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,245 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,787 |
| World Map Quiz | 0 | - | 4.81 | 64,205 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,764 |
| Countries by Sports in 60 Seconds | 0 | - | 4.91 | 143,364 |
| Countries by Founding Story | 0 | - | 4.95 | 76,928 |
| Countries by Road Signs | 0 | - | 4.98 | 53,476 |
| Countries That Do Not Border | 0 | - | 4.99 | 59,811 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,164 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,730 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,466 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,857 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,334 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,516 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,680 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,174 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,028 |
| Widest Countries East to West | 0 | - | 4.92 | 129,214 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,339 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,726 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,945 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,990 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,040 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,411 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,147 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,688 |
| Countries With the Tallest People | 0 | - | 4.91 | 94,709 |
| Countries with Double Letters | 0 | - | 4.96 | 94,476 |
| Countries that End in N | 0 | - | 4.95 | 168,429 |
| Countries with Five Letters | 0 | - | 4.96 | 270,226 |
| Countries with Six Letters | 0 | - | 4.93 | 211,689 |
| Countries with W | 0 | - | 4.97 | 159,076 |
| Countries with Z | 0 | - | 4.98 | 289,152 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,277 |
| Countries That End in U | 0 | - | 4.95 | 120,131 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,326 |
| Countries that End in O | 0 | - | 4.92 | 158,994 |
| Countries that End in R | 0 | - | 4.87 | 118,583 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,370 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,918 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,850 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,893 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,475 |
| Countries That End in Y | 0 | - | 4.90 | 185,498 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,954 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,181 |
| Countries that End in I | 0 | - | 4.94 | 134,720 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,781 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,453 |
| Countries That End in NIA | 0 | - | 4.92 | 109,343 |
| Countries That End in BIA | 0 | - | 4.93 | 148,641 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,497 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,841 |
| Countries That End in RIA | 0 | - | 4.93 | 126,390 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,414 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,221 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,952 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,280 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,900 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,190 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,512 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,037 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,914 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,076 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,606 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,305 |
| Countries that End in L | 0 | - | 4.94 | 156,358 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,194 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,097 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,743 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,601 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,659 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,424 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,885 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,419 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,885 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,338 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,096 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,886 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,314 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,540 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,545 |
| ALL First-Level Subdivisions of the World With a Map | 0 | - | 5.00 | 145,993 |
| All First-Level Subdivisions of Europe by Proximity | 0 | - | 4.84 | 76,740 |
| Top World Languages on a Map | 0 | - | 4.93 | 102,570 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.99 | 116,010 |
| 407 Islands on the World Map | 0 | - | 4.99 | 34,942 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,477 |
| Smallest Countries with at Least Two Borders | 0 | - | 4.97 | 42,194 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,776 |
