| Countries with Glaciers | 0 | - | 4.97 | 104,944 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,246 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,475 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,235,369 |
| Landlocked Countries | 0 | - | 4.99 | 417,521 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,528 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,747,651 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,334 |
| Himalayan Countries | 0 | - | 4.95 | 136,852 |
| Andean Countries | 0 | - | 4.95 | 83,651 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,911 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,231 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,577 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,167 |
| Danube Countries | 0 | - | 4.97 | 71,511 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,346 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,928 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,369 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,412 |
| European Landlocked Countries | 0 | - | 4.99 | 146,230 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,930 |
| Countries with the Most Species | 0 | - | 4.99 | 102,561 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,052 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,369 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,545 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,217 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,877 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,262 |
| Countries in the Alps | 0 | - | 4.86 | 117,475 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,995 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,097 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,329 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,834 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,932 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,350 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,110 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,069 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,880 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,422 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,413 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,260 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,821 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,082 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,093 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,917 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,962 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,491 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,348 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,572 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,859 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,894 |
| Largest Countries By Category | 0 | - | 4.97 | 157,411 |
| Countries by Countries | 0 | - | 4.96 | 62,705 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,998 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,116 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,437 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,184 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,819 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,217 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,379 |
| Island Countries | 0 | - | 4.99 | 709,212 |
| Least-Forested Countries | 0 | - | 4.53 | 65,099 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 81,927 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,539 |
| Northernmost Countries | 0 | - | 4.99 | 359,867 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,559 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,343 |
| Countries of South America | 0 | - | 5.00 | 921,045 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,771 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,862,001 |
| "Land" Countries | 0 | - | 4.98 | 335,378 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,118 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,707 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,578 |
| Countries with Megacities | 0 | - | 4.99 | 249,585 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,430 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,727 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,769 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,693 |
| Countries by Official Language | 0 | - | 4.95 | 194,370 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,184 |
| Countries in their Native Language | 0 | - | 4.99 | 197,942 |
| Independence from Whom | 0 | - | 4.99 | 211,041 |
| Subdivisions by Country | 0 | - | 4.86 | 50,239 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,496 |
| Megadiverse Countries | 0 | - | 4.96 | 134,663 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,081 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,125 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,682 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,973 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,550 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,288 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,759 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,681 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,431 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,825 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,558 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,633 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,734 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,701 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,915 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,263 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,829 |
| World Map Quiz | 0 | - | 4.81 | 64,282 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,876 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,857 |
| Countries by Founding Story | 0 | - | 4.95 | 76,960 |
| Countries by Road Signs | 0 | - | 4.98 | 53,519 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,241 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,783 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,506 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,982 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,383 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,561 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,717 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,193 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,185 |
| Widest Countries East to West | 0 | - | 4.92 | 129,249 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,348 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,780 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,961 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,373 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,073 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,438 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,174 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,702 |
| Countries with Double Letters | 0 | - | 4.97 | 94,748 |
| Countries that End in N | 0 | - | 4.95 | 169,117 |
| Countries with Five Letters | 0 | - | 4.96 | 276,122 |
| Countries with Six Letters | 0 | - | 4.94 | 212,051 |
| Countries with W | 0 | - | 4.97 | 159,260 |
| Countries with Z | 0 | - | 4.98 | 289,417 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,468 |
| Countries That End in U | 0 | - | 4.95 | 120,266 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,493 |
| Countries that End in O | 0 | - | 4.92 | 159,080 |
| Countries that End in R | 0 | - | 4.87 | 118,640 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,419 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,054 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,930 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,953 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,535 |
| Countries That End in Y | 0 | - | 4.90 | 185,555 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,029 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,250 |
| Countries that End in I | 0 | - | 4.94 | 134,763 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,859 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,484 |
| Countries That End in NIA | 0 | - | 4.92 | 109,409 |
| Countries That End in BIA | 0 | - | 4.93 | 148,701 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,560 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,913 |
| Countries That End in RIA | 0 | - | 4.93 | 126,429 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,499 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,344 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,021 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,361 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,967 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,236 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,566 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,098 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,985 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,121 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,676 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,361 |
| Countries that End in L | 0 | - | 4.94 | 156,433 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,449 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,126 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,767 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,634 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,689 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,490 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,935 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,472 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,920 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,392 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,121 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,900 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,321 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,554 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,575 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,362 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,222 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,557 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.61 | 37,758 |
| One Border Countries | 0 | - | 4.98 | 466,980 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,136 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,817,393 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,608,626 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,404 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,136 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,389 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,111 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,484 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,170 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,209 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,765 |
| Countries by National Anthem | 0 | - | 4.92 | 71,153 |
| NATO Countries | 0 | - | 4.98 | 278,653 |
| EU Countries Quiz | 0 | - | 4.99 | 272,221 |
