| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,619,480 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,402,359 |
| Landlocked Countries | 0 | - | 4.99 | 419,778 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 570,426 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,524 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,356 |
| Himalayan Countries | 0 | - | 4.95 | 137,786 |
| Andean Countries | 0 | - | 4.95 | 84,108 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,342 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,886 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,974 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,452 |
| Danube Countries | 0 | - | 4.97 | 71,747 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,675 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,147 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,818 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,891 |
| European Landlocked Countries | 0 | - | 4.99 | 146,871 |
| 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 | 70,413 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,460 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,627 |
| 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 | 95,227 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,559 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,473 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,353 |
| 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 | 100,382 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,268 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,028 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,631 |
| 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 | 79,266 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,285 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,381 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,122 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,630 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,673 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,785 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,468 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,050 |
| Largest Countries By Category | 0 | - | 4.97 | 157,797 |
| Countries by Countries | 0 | - | 4.97 | 62,934 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,341 |
| 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 | 108,834 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,728 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,423 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,740 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,847 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,826 |
| Island Countries | 0 | - | 4.99 | 710,124 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,032 |
| Northernmost Countries | 0 | - | 4.99 | 360,900 |
| Countries of South America | 0 | - | 5.00 | 924,132 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,829 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,518 |
| "Land" Countries | 0 | - | 4.98 | 336,012 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,799 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,715 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,278 |
| Countries with Megacities | 0 | - | 4.99 | 262,537 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,113 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,127 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,412 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,176 |
| Countries by Official Language | 0 | - | 4.95 | 194,810 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,764 |
| Countries in their Native Language | 0 | - | 4.99 | 198,354 |
| Independence from Whom | 0 | - | 4.99 | 211,547 |
| Subdivisions by Country | 0 | - | 4.86 | 50,329 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,863 |
| Megadiverse Countries | 0 | - | 4.96 | 134,828 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,682 |
| 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 | 162,820 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,439 |
| 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 | 77,192 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,764 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,044 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,831 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,210 |
| 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 | 110,453 |
| World Map Quiz | 0 | - | 4.81 | 64,742 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 137,673 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,017 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,127 |
| Countries of the World With a Disappearing Map | 0 | - | 5.00 | 112,429 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,874 |
| Countries by Sports in 60 Seconds | 0 | - | 4.92 | 145,013 |
| Countries by Founding Story | 0 | - | 4.95 | 77,147 |
| Countries by Road Signs | 0 | - | 4.98 | 53,736 |
| Countries That Do Not Border | 0 | - | 4.99 | 60,195 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,668 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,023 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,758 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,608 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,626 |
| 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 | 129,445 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,406 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,067 |
| 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 | 148,324 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,643 |
| 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 | 94,867 |
| Countries with Double Letters | 0 | - | 4.97 | 95,265 |
| Countries that End in N | 0 | - | 4.95 | 170,274 |
| Countries with Five Letters | 0 | - | 4.96 | 281,024 |
| Countries with Six Letters | 0 | - | 4.94 | 212,708 |
| Countries with W | 0 | - | 4.97 | 159,643 |
| Countries with Z | 0 | - | 4.98 | 290,487 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,888 |
| Countries That End in U | 0 | - | 4.95 | 120,477 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,903 |
| Countries that End in O | 0 | - | 4.92 | 159,255 |
| Countries that End in R | 0 | - | 4.87 | 118,773 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,550 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,499 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,261 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,167 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,780 |
| 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 | 183,624 |
| 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 | 148,923 |
| 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 | 126,596 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,731 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,944 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,338 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,718 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,250 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,388 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,746 |
| 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 | 116,925 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,651 |
| Countries with the Highest Scrabble Score | 0 | - | 4.97 | 63,515 |
| Countries that End in L | 0 | - | 4.94 | 156,608 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,459 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,173 |
| 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 | 248,950 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,310 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,730 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,239 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,733 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,651 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,992 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,617 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,730 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 382,984 |
| Smallest Countries with at Least Two Borders | 0 | - | 4.97 | 42,578 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,623 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,071 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,826,075 |
| One Border Countries | 0 | - | 4.98 | 468,199 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,336 |
| Countries with the Highest Minimum Elevation | 0 | - | 4.86 | 16,157 |
| 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 | 86,647 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,621 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,808 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,343 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,467 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,015 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,067 |
