| Landlocked Countries | 0 | - | 4.99 | 420,567 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,462,803 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,720 |
| Himalayan Countries | 0 | - | 4.95 | 138,094 |
| Andean Countries | 0 | - | 4.95 | 84,271 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,492 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,340 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,123 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,568 |
| Danube Countries | 0 | - | 4.97 | 71,836 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,799 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,240 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,979 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,432 |
| European Landlocked Countries | 0 | - | 4.99 | 146,969 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,383 |
| Countries with the Most Species | 0 | - | 4.99 | 103,095 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,534 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,508 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,659 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,446 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,117 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,506 |
| Countries in the Alps | 0 | - | 4.87 | 117,963 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,520 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,719 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,549 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,455 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,307 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,833 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,471 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,341 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,079 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,705 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,568 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,421 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,072 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,349 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,369 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,547 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,181 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,691 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,823 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,194 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,678 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,113 |
| Largest Countries By Category | 0 | - | 4.97 | 157,934 |
| Countries by Countries | 0 | - | 4.97 | 63,015 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,468 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,218 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,513 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,512 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,833 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,322 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,056 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,252 |
| Island Countries | 0 | - | 4.99 | 710,404 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,924 |
| Northernmost Countries | 0 | - | 4.99 | 361,241 |
| Countries of South America | 0 | - | 5.00 | 925,138 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,081 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,017 |
| "Land" Countries | 0 | - | 4.98 | 336,460 |
| Countries With the Most Expats | 0 | - | 4.69 | 49,507 |
| Countries with the Most Immigrants per Capita | 0 | - | 4.53 | 62,383 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,782 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,473 |
| Countries with Megacities | 0 | - | 4.99 | 263,449 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,312 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,255 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,609 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,291 |
| Countries by Official Language | 0 | - | 4.95 | 194,943 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,962 |
| Countries in their Native Language | 0 | - | 4.99 | 198,467 |
| Independence from Whom | 0 | - | 4.99 | 211,725 |
| Subdivisions by Country | 0 | - | 4.86 | 50,363 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,990 |
| Megadiverse Countries | 0 | - | 4.96 | 134,888 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,810 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,262 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,846 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,060 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,918 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,485 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,227 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,938 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,565 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,045 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,352 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,796 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,095 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,873 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,419 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,692 |
| World Map Quiz | 0 | - | 4.81 | 64,876 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,429 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,198 |
| Countries by Founding Story | 0 | - | 4.95 | 77,225 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,789 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,099 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,832 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,790 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,729 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,863 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,165 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,354 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,443 |
| Widest Countries East to West | 0 | - | 4.92 | 129,507 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,417 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,168 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,063 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,643 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,418 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,710 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,311 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,764 |
| Countries with Double Letters | 0 | - | 4.97 | 95,406 |
| Countries that End in N | 0 | - | 4.95 | 170,448 |
| Countries with Five Letters | 0 | - | 4.96 | 281,411 |
| Countries with Six Letters | 0 | - | 4.94 | 212,867 |
| Countries with W | 0 | - | 4.97 | 159,738 |
| Countries with Z | 0 | - | 4.98 | 290,673 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,002 |
| Countries That End in U | 0 | - | 4.95 | 120,529 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,027 |
| Countries that End in O | 0 | - | 4.92 | 159,298 |
| Countries that End in R | 0 | - | 4.87 | 118,811 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,583 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,643 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,341 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,231 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,851 |
| Countries That End in Y | 0 | - | 4.91 | 185,733 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,547 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,632 |
| Countries that End in I | 0 | - | 4.94 | 134,963 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,747 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,676 |
| Countries That End in NIA | 0 | - | 4.92 | 109,635 |
| Countries That End in BIA | 0 | - | 4.93 | 148,994 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,893 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,218 |
| Countries That End in RIA | 0 | - | 4.93 | 126,656 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,789 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,136 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,436 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,822 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,351 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,427 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,812 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,363 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,310 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,294 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,024 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,742 |
| Countries that End in L | 0 | - | 4.94 | 156,672 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,849 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,195 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,916 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,832 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,885 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,444 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,412 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,821 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,351 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,852 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,731 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,021 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,669 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,643 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,768 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,783 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,361 |
| One Border Countries | 0 | - | 4.98 | 468,650 |
| Countries by Net Migration | 0 | - | 4.52 | 83,856 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,133 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,623,619 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,722 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,818 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,913 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,395 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,543 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,089 |
| Countries by National Anthem | 0 | - | 4.93 | 71,246 |
| NATO Countries | 0 | - | 4.98 | 280,444 |
| EU Countries Quiz | 0 | - | 4.99 | 274,272 |
| Recently Independent Countries | 0 | - | 4.98 | 159,255 |
| French-Speaking Countries | 0 | - | 4.85 | 270,520 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,827 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,057 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,397 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,250 |
| German-Speaking Countries | 0 | - | 4.92 | 145,570 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,822 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,172 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,759 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,545 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,394 |
