| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,629 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,609 |
| Last Names by Country of Origin | 0 | - | 4.64 | 155,879 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,896,610 |
| Landlocked Countries | 0 | - | 4.99 | 413,335 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,428 |
| Countries by Emojis | 0 | - | 4.99 | 236,055 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,082 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,119 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,080 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,464 |
| Himalayan Countries | 0 | - | 4.95 | 135,250 |
| Andean Countries | 0 | - | 4.94 | 82,770 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,181 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,123 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,851 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,557 |
| Danube Countries | 0 | - | 4.97 | 71,054 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,718 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,508 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,405 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,333 |
| European Landlocked Countries | 0 | - | 4.99 | 145,721 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,156 |
| Countries with the Most Species | 0 | - | 4.99 | 95,229 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,296 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,192 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,358 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,944 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,553 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,924 |
| Countries in the Alps | 0 | - | 4.86 | 116,777 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,529 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,196 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,987 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,394 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,119 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,974 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,537 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,728 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,139 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,027 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,185 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,026 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,422 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,715 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,728 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,007 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,617 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,318 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,313 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,240 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,740 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,120 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,548 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,577 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,322 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,815 |
| Largest Countries By Category | 0 | - | 4.97 | 156,706 |
| Countries by Countries | 0 | - | 4.96 | 62,233 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,332 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,953 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,319 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,729 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,579 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,511 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,028 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,661 |
| Island Countries | 0 | - | 4.99 | 707,505 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,532 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,097 |
| Northernmost Countries | 0 | - | 4.99 | 357,568 |
| Countries of South America | 0 | - | 5.00 | 914,235 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,844 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,310 |
| "Land" Countries | 0 | - | 4.98 | 333,565 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 129,606 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,619 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,018 |
| Name a Valid African Country | 0 | - | 4.98 | 152,900 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,115 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,539 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,494 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,012 |
| Countries with Megacities | 0 | - | 4.99 | 246,568 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,940 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,812 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,385 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,761 |
| Countries by Official Language | 0 | - | 4.95 | 192,710 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,045 |
| Countries in their Native Language | 0 | - | 4.99 | 196,569 |
| Independence from Whom | 0 | - | 4.99 | 209,613 |
| Subdivisions by Country | 0 | - | 4.86 | 50,053 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,694 |
| Megadiverse Countries | 0 | - | 4.97 | 133,869 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,743 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,904 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,408 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,614 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,981 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,867 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,123 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,204 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,734 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,511 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,400 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,477 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,486 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,647 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,006 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,507 |
| World Map Quiz | 0 | - | 4.81 | 63,461 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,502 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,295 |
| Countries by Founding Story | 0 | - | 4.95 | 76,499 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,278 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,950 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,910 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,654 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,824 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,031 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,241 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,926 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,315 |
| Widest Countries East to West | 0 | - | 4.92 | 128,581 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,210 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,169 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,555 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,671 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,599 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,016 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,047 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,569 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 334,567 |
| Countries with Double Letters | 0 | - | 4.97 | 93,319 |
| Countries that End in N | 0 | - | 4.94 | 156,409 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,611 |
| Countries with Six Letters | 0 | - | 4.93 | 210,290 |
| Countries with W | 0 | - | 4.97 | 158,185 |
| Countries with Z | 0 | - | 4.98 | 287,798 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,503 |
| Countries That End in U | 0 | - | 4.95 | 119,491 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,483 |
| Countries that End in O | 0 | - | 4.92 | 158,530 |
| Countries that End in R | 0 | - | 4.87 | 118,250 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,848 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,958 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,284 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,459 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,975 |
| Countries That End in Y | 0 | - | 4.90 | 185,184 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,317 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,635 |
| Countries that End in I | 0 | - | 4.94 | 134,382 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,131 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,176 |
| Countries That End in NIA | 0 | - | 4.92 | 108,975 |
| Countries That End in BIA | 0 | - | 4.92 | 147,679 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,028 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,452 |
| Countries That End in RIA | 0 | - | 4.93 | 126,058 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,977 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,125 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,490 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,870 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,328 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,915 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,090 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,617 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,468 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,804 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,092 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,776 |
| Countries that End in L | 0 | - | 4.94 | 155,696 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,016 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,977 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,496 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,270 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,407 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,722 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,042 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,890 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,144 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,334 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,490 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,597 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,162 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,411 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,299 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,799,887 |
| One Border Countries | 0 | - | 4.98 | 464,168 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,586,431 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,783 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,835 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,829 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,445 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,551 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,211 |
