| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,619,417 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,401,546 |
| Landlocked Countries | 0 | - | 4.99 | 419,774 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 570,398 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,437 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,347 |
| Himalayan Countries | 0 | - | 4.95 | 137,782 |
| Andean Countries | 0 | - | 4.95 | 84,106 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,341 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,884 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,973 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,452 |
| Danube Countries | 0 | - | 4.97 | 71,747 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,673 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,146 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,815 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,891 |
| European Landlocked Countries | 0 | - | 4.99 | 146,869 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,253 |
| Countries with the Most Species | 0 | - | 4.99 | 103,014 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,411 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,458 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,625 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,376 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,047 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,446 |
| Countries in the Alps | 0 | - | 4.87 | 117,832 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,224 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,557 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,473 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,349 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,216 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,783 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,381 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,265 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,026 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,630 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,527 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,375 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,996 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,265 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,284 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,376 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,121 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,630 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,672 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,781 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,463 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,045 |
| Largest Countries By Category | 0 | - | 4.97 | 157,796 |
| Countries by Countries | 0 | - | 4.97 | 62,933 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,339 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,184 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,490 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,829 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,725 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,419 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,735 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,843 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,824 |
| Island Countries | 0 | - | 4.99 | 710,115 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,027 |
| Northernmost Countries | 0 | - | 4.99 | 360,896 |
| Countries of South America | 0 | - | 5.00 | 924,118 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,814 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,474 |
| "Land" Countries | 0 | - | 4.98 | 336,010 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,769 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,714 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,275 |
| Countries with Megacities | 0 | - | 4.99 | 262,520 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,109 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,125 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,407 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,174 |
| Countries by Official Language | 0 | - | 4.95 | 194,807 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,763 |
| Countries in their Native Language | 0 | - | 4.99 | 198,353 |
| Independence from Whom | 0 | - | 4.99 | 211,545 |
| Subdivisions by Country | 0 | - | 4.86 | 50,329 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,861 |
| Megadiverse Countries | 0 | - | 4.96 | 134,827 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,679 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,222 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,794 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,039 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,818 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,438 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,100 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,897 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,532 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,021 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,189 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,764 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,043 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,831 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,209 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,379 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,418 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,447 |
| World Map Quiz | 0 | - | 4.81 | 64,742 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 137,666 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,013 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,126 |
| Countries of the World With a Disappearing Map | 0 | - | 5.00 | 112,428 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,870 |
| Countries by Sports in 60 Seconds | 0 | - | 4.92 | 145,009 |
| Countries by Founding Story | 0 | - | 4.95 | 77,145 |
| Countries by Road Signs | 0 | - | 4.98 | 53,735 |
| Countries That Do Not Border | 0 | - | 4.99 | 60,194 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,664 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,022 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,756 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,606 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,625 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,771 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,908 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,320 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,362 |
| Widest Countries East to West | 0 | - | 4.92 | 129,444 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,406 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,066 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,033 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,587 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,323 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,641 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,280 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,743 |
| Countries With the Tallest People | 0 | - | 4.93 | 94,865 |
| Countries with Double Letters | 0 | - | 4.97 | 95,264 |
| Countries that End in N | 0 | - | 4.95 | 170,273 |
| Countries with Five Letters | 0 | - | 4.96 | 281,017 |
| Countries with Six Letters | 0 | - | 4.94 | 212,707 |
| Countries with W | 0 | - | 4.97 | 159,643 |
| Countries with Z | 0 | - | 4.98 | 290,486 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,887 |
| Countries That End in U | 0 | - | 4.95 | 120,476 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,902 |
| Countries that End in O | 0 | - | 4.92 | 159,253 |
| Countries that End in R | 0 | - | 4.87 | 118,773 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,548 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,496 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,258 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,166 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,779 |
| Countries That End in Y | 0 | - | 4.91 | 185,687 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,432 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,525 |
| Countries that End in I | 0 | - | 4.94 | 134,914 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,621 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,627 |
| Countries That End in NIA | 0 | - | 4.92 | 109,576 |
| Countries That End in BIA | 0 | - | 4.93 | 148,921 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,822 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,148 |
| Countries That End in RIA | 0 | - | 4.93 | 126,595 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,731 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,940 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,336 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,715 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,247 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,387 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,745 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,324 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,239 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,247 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,923 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,651 |
| Countries with the Highest Scrabble Score | 0 | - | 4.97 | 63,513 |
| Countries that End in L | 0 | - | 4.94 | 156,606 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,455 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,172 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,882 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,784 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,828 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,945 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,308 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,729 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,238 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,730 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,650 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,991 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,617 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,729 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 382,968 |
| Smallest Countries with at Least Two Borders | 0 | - | 4.97 | 42,578 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,601 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,067 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,826,027 |
| One Border Countries | 0 | - | 4.98 | 468,195 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,335 |
| Countries with the Highest Minimum Elevation | 0 | - | 4.86 | 16,156 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,167 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,646 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,617 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,806 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,343 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,466 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,015 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,057 |
