| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,726 |
| North Sea Countries | 0 | - | 4.92 | 86,571 |
| Black Sea Countries | 0 | - | 4.87 | 60,306 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 64,984 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,081 |
| Countries With No Rivers | 0 | - | 4.96 | 75,990 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,928 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,339 |
| Countries with Fjords | 0 | - | 4.93 | 100,158 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,633 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,190 |
| Megadiverse Countries | 0 | - | 4.97 | 133,837 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,726 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,259 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 114,656 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,128 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,861,512 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,545 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,268 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,371 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,036 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,842 |
| Landlocked Countries | 0 | - | 4.99 | 412,974 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,323 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,044 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,695 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,340 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,302 |
| Himalayan Countries | 0 | - | 4.95 | 135,095 |
| Andean Countries | 0 | - | 4.94 | 82,689 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,100 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,023 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,789 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,494 |
| Danube Countries | 0 | - | 4.97 | 71,012 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,659 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,468 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,315 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,230 |
| European Landlocked Countries | 0 | - | 4.99 | 145,680 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,070 |
| Countries with the Most Species | 0 | - | 4.99 | 95,199 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,224 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,178 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,335 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,913 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,524 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,883 |
| Countries in the Alps | 0 | - | 4.87 | 116,706 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,489 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,109 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,949 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,336 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,075 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,942 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,486 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,695 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,315 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,983 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,168 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,003 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,380 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,686 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,686 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,903 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,579 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,209 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,692 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,896 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,408 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,548 |
| Largest Countries By Category | 0 | - | 4.97 | 156,644 |
| Countries by Countries | 0 | - | 4.96 | 62,184 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,246 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,936 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,671 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,152 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,871 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,058 |
| Island Countries | 0 | - | 4.99 | 707,288 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,516 |
| Northernmost Countries | 0 | - | 4.99 | 357,322 |
| Countries of South America | 0 | - | 5.00 | 913,586 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,887 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,845,591 |
| "Land" Countries | 0 | - | 4.98 | 333,456 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,379 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,425 |
| Countries with the Most Wolves | 0 | - | 4.92 | 106,967 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,460 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,894 |
| Countries with Megacities | 0 | - | 4.99 | 246,266 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,813 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,750 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,272 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,688 |
| Biggest City by River | 0 | - | 4.41 | 52,683 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,297 |
| Countries by Official Language | 0 | - | 4.95 | 192,610 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,919 |
| Countries in their Native Language | 0 | - | 4.99 | 196,498 |
| Independence from Whom | 0 | - | 4.99 | 209,509 |
| Subdivisions by Country | 0 | - | 4.86 | 50,035 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,600 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,665 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,881 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,380 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,839 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,562 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,945 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,607 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,070 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,185 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,718 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,417 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,372 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,443 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,456 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,611 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,985 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,380 |
| World Map Quiz | 0 | - | 4.81 | 63,385 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,284 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,232 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,186 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,894 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,865 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,540 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,785 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,979 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,186 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,886 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,272 |
| Widest Countries East to West | 0 | - | 4.92 | 128,535 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,194 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,099 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,528 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,632 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,528 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,958 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,032 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,553 |
| Landforms by Country | 0 | - | 4.52 | 51,909 |
| Countries with Double Letters | 0 | - | 4.97 | 93,244 |
| Countries that End in N | 0 | - | 4.94 | 156,307 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,516 |
| Countries with Six Letters | 0 | - | 4.93 | 210,214 |
| Countries with W | 0 | - | 4.97 | 158,116 |
| Countries with Z | 0 | - | 4.98 | 287,567 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,444 |
| Countries That End in U | 0 | - | 4.95 | 119,457 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,371 |
| Countries that End in O | 0 | - | 4.92 | 158,484 |
| Countries that End in R | 0 | - | 4.86 | 118,212 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,814 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,885 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,196 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,399 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,578 |
| Countries That End in Y | 0 | - | 4.90 | 185,159 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,199 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,566 |
| Countries that End in I | 0 | - | 4.94 | 134,325 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,038 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,149 |
| Countries That End in NIA | 0 | - | 4.92 | 108,941 |
| Countries That End in BIA | 0 | - | 4.92 | 147,622 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,990 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,418 |
| Countries That End in RIA | 0 | - | 4.93 | 126,022 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,928 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,008 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,449 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,828 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,269 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,873 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,044 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,566 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,413 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,772 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,023 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,706 |
| Countries that End in L | 0 | - | 4.94 | 155,650 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,745 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,966 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,466 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,232 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,372 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,345 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 198,967 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,842 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,072 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,262 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,450 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,573 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,146 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,392 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,264 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,877 |
| African Great Lakes | 0 | - | 4.82 | 65,054 |
