| Landlocked Countries | 0 | - | 4.99 | 417,753 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,249,414 |
| Country Name Etymologies #1 | 0 | - | 4.97 | 158,697 |
| Country Name Etymologies #2 | 0 | - | 4.96 | 86,395 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,418 |
| Himalayan Countries | 0 | - | 4.94 | 136,925 |
| Andean Countries | 0 | - | 4.95 | 83,682 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,944 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,277 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,605 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,193 |
| Danube Countries | 0 | - | 4.97 | 71,533 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,372 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,948 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,418 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,477 |
| European Landlocked Countries | 0 | - | 4.99 | 146,390 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,962 |
| Countries with the Most Species | 0 | - | 4.99 | 102,642 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,092 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,379 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,551 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,231 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,892 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,276 |
| Countries in the Alps | 0 | - | 4.86 | 117,505 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,010 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,136 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,341 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,855 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,955 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,368 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,130 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,087 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,889 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,436 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,421 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,271 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,828 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,101 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,114 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,953 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,976 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,506 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,372 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,716 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,907 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,912 |
| Largest Countries By Category | 0 | - | 4.97 | 157,454 |
| Countries by Countries | 0 | - | 4.96 | 62,726 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,040 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,123 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,444 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,207 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,749,113 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,960 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,277 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,487 |
| Island Countries | 0 | - | 4.99 | 709,280 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,763 |
| Northernmost Countries | 0 | - | 4.99 | 359,947 |
| Countries of South America | 0 | - | 5.00 | 921,369 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,082 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,862,657 |
| "Land" Countries | 0 | - | 4.98 | 335,461 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,089 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,639 |
| Countries with Megacities | 0 | - | 4.99 | 249,690 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,473 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,761 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,810 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,732 |
| Countries by Official Language | 0 | - | 4.95 | 194,418 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,238 |
| Countries in their Native Language | 0 | - | 4.99 | 197,982 |
| Independence from Whom | 0 | - | 4.99 | 211,082 |
| Subdivisions by Country | 0 | - | 4.86 | 50,244 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,528 |
| Megadiverse Countries | 0 | - | 4.96 | 134,684 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,106 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,140 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,692 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,983 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,570 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,302 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,791 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,715 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,439 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,862 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,595 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,650 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,793 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,715 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,971 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,274 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,876 |
| World Map Quiz | 0 | - | 4.81 | 64,314 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,963 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,897 |
| Countries by Founding Story | 0 | - | 4.95 | 76,975 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,280 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,801 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,525 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,022 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,406 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,582 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,738 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,205 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,194 |
| Widest Countries East to West | 0 | - | 4.92 | 129,256 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,355 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,800 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,964 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,430 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,096 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,452 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,181 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,705 |
| Countries with Double Letters | 0 | - | 4.97 | 94,809 |
| Countries that End in N | 0 | - | 4.95 | 169,300 |
| Countries with Five Letters | 0 | - | 4.96 | 277,257 |
| Countries with Six Letters | 0 | - | 4.94 | 212,156 |
| Countries with W | 0 | - | 4.97 | 159,310 |
| Countries with Z | 0 | - | 4.98 | 289,503 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,514 |
| Countries That End in U | 0 | - | 4.95 | 120,299 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,534 |
| Countries that End in O | 0 | - | 4.92 | 159,110 |
| Countries that End in R | 0 | - | 4.87 | 118,661 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,443 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,106 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,967 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,979 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,564 |
| Countries That End in Y | 0 | - | 4.90 | 185,579 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,061 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,277 |
| Countries that End in I | 0 | - | 4.94 | 134,791 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,897 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,506 |
| Countries That End in NIA | 0 | - | 4.92 | 109,425 |
| Countries That End in BIA | 0 | - | 4.93 | 148,729 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,585 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,940 |
| Countries That End in RIA | 0 | - | 4.93 | 126,441 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,524 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,397 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,058 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,399 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,988 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,251 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,581 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,119 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,016 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,130 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,702 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,385 |
| Countries that End in L | 0 | - | 4.94 | 156,452 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,528 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,131 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 77,819 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,783 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,645 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,700 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,528 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,971 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,492 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,948 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,418 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,265 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,901 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,327 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,565 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,585 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,648 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,314 |
| One Border Countries | 0 | - | 4.98 | 467,071 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,818,168 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,609,741 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,415 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,146 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,519 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,177 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,229 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,793 |
| Countries by National Anthem | 0 | - | 4.92 | 71,157 |
| NATO Countries | 0 | - | 4.98 | 278,744 |
| EU Countries Quiz | 0 | - | 4.99 | 272,347 |
| Recently Independent Countries | 0 | - | 4.98 | 158,686 |
| French-Speaking Countries | 0 | - | 4.85 | 270,017 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,712 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,267 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,959 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,190 |
| German-Speaking Countries | 0 | - | 4.91 | 144,979 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,143 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,735 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,745 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,436 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,501 |
