| Countries With No Rivers | 0 | - | 4.96 | 77,295 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,345 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,661 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,283 |
| Countries with Fjords | 0 | - | 4.94 | 101,665 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,162 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,117 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,684 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,922 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,238 |
| North Sea Countries | 0 | - | 4.92 | 87,828 |
| Black Sea Countries | 0 | - | 4.87 | 60,824 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,686 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,785 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,448 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,509 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,663,012 |
| Megadiverse Countries | 0 | - | 4.96 | 149,847 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,534 |
| African Great Lakes | 0 | - | 4.82 | 67,210 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,823 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,942 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,424 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,855 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,015,782 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 61,022 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,710 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,813 |
| Landlocked Countries | 0 | - | 4.99 | 427,828 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,816,445 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,311 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,791 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 389,381 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,531 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 57,045 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,955 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,151 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,799 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,214 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,722 |
| Island Countries | 0 | - | 4.99 | 713,271 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,184 |
| Himalayan Countries | 0 | - | 4.93 | 141,066 |
| Andean Countries | 0 | - | 4.94 | 85,926 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,031 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,667 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,581 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,776 |
| Danube Countries | 0 | - | 4.97 | 72,625 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,892 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,032 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,560 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,036 |
| European Landlocked Countries | 0 | - | 4.99 | 147,835 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,628 |
| Countries with the Most Species | 0 | - | 4.99 | 103,680 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,733 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,838 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,982 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,968 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,718 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,185 |
| Countries in the Alps | 0 | - | 4.87 | 119,068 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,153 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,269 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,101 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,231 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,203 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,435 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,653 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,046 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,544 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,359 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,987 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,856 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,720 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,972 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,073 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,295 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,772 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,853 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,924 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,613 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,705 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,648 |
| Largest Countries By Category | 0 | - | 4.97 | 159,209 |
| Countries by Countries | 0 | - | 4.97 | 63,869 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,810 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 102,209 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,548 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,647 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,465 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,304 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,871 |
| Northernmost Countries | 0 | - | 4.99 | 364,893 |
| Landforms by Country | 0 | - | 4.52 | 52,033 |
| Countries of South America | 0 | - | 5.00 | 935,083 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,576 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,067 |
| "Land" Countries | 0 | - | 4.98 | 339,209 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,248 |
| Seas of Europe | 0 | - | 4.37 | 85,002 |
| Capitals by River | 0 | - | 4.55 | 48,413 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,857 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,774 |
| Countries in an Empty Ring of the World Map | 0 | - | 4.92 | 127,479 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.91 | 281,453 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,226 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,098 |
| Sea in the Answers | 0 | - | 4.08 | 49,222 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,457,020 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,261 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,694 |
| Countries with Megacities | 0 | - | 4.99 | 268,249 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,319 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,425 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,673 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,553 |
| Countries by Official Language | 0 | - | 4.95 | 196,356 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,118 |
| Countries in their Native Language | 0 | - | 4.99 | 200,061 |
| Independence from Whom | 0 | - | 4.99 | 213,577 |
| Subdivisions by Country | 0 | - | 4.87 | 50,684 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,776 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,229 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,598 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,867 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,275 |
| South China Sea Countries | 0 | - | 4.78 | 57,901 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,570 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,967 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,388 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,664 |
| Countries with the Most Wild Elephants | 0 | - | 4.64 | 55,252 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,223 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,142 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,303 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,924 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,530 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,537 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,255 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,681 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,017 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,928 |
| World Map Quiz | 0 | - | 4.81 | 65,994 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,237 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,872 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,657 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,307 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,779 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,093 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,629 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,746 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,911 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,791 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,026 |
| Widest Countries East to West | 0 | - | 4.92 | 130,916 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,640 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,486 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,591 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,209 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,505 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,665 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,555 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,810 |
| Countries that End in N | 0 | - | 4.95 | 172,806 |
| Countries with Five Letters | 0 | - | 4.96 | 284,881 |
| Countries with Six Letters | 0 | - | 4.94 | 215,146 |
| Countries with W | 0 | - | 4.96 | 161,447 |
| Countries with Z | 0 | - | 4.98 | 293,209 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,818 |
| Countries That End in U | 0 | - | 4.95 | 121,465 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,572 |
| Countries that End in O | 0 | - | 4.92 | 160,434 |
| Countries that End in R | 0 | - | 4.87 | 119,320 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,093 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,289 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,785 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,310 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,993 |
| Countries That End in Y | 0 | - | 4.91 | 186,213 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,538 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,500 |
| Countries that End in I | 0 | - | 4.94 | 135,463 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,475 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,190 |
| Countries That End in NIA | 0 | - | 4.92 | 110,206 |
| Countries That End in BIA | 0 | - | 4.93 | 149,797 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,013 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,962 |
| Countries That End in RIA | 0 | - | 4.93 | 127,205 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,602 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,097 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,486 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,948 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,499 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,966 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,531 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,626 |
