| North Sea Countries | 0 | - | 4.92 | 87,102 |
| Black Sea Countries | 0 | - | 4.87 | 60,545 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,261 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,369 |
| Countries With No Rivers | 0 | - | 4.96 | 76,591 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,139 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,716 |
| Countries with Fjords | 0 | - | 4.93 | 100,691 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,349 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,258 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,566 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,550 |
| Megadiverse Countries | 0 | - | 4.96 | 134,688 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,646 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,211 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,151 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,738 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,791 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,253,754 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,288 |
| Landlocked Countries | 0 | - | 4.99 | 417,818 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,457 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,749,480 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,827 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,447 |
| Himalayan Countries | 0 | - | 4.94 | 136,951 |
| Andean Countries | 0 | - | 4.95 | 83,701 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,948 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,294 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,619 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,200 |
| Danube Countries | 0 | - | 4.97 | 71,541 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,378 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,954 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,432 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,496 |
| European Landlocked Countries | 0 | - | 4.99 | 146,458 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,968 |
| Countries with the Most Species | 0 | - | 4.99 | 102,662 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,099 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,380 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,551 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,236 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,899 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,278 |
| Countries in the Alps | 0 | - | 4.86 | 117,513 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,015 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,147 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,343 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,862 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,965 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,370 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,136 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,090 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,893 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,447 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,424 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,278 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,834 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,104 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,122 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,965 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,984 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,509 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,384 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,737 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,929 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,913 |
| Largest Countries By Category | 0 | - | 4.97 | 157,459 |
| Countries by Countries | 0 | - | 4.96 | 62,733 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,214 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,947 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,580 |
| Seas on the World Map | 0 | - | 4.96 | 135,006 |
| Seas of the World | 0 | - | 5.00 | 156,047 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,628 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,008 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,291 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,516 |
| Island Countries | 0 | - | 4.99 | 709,299 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,244 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,820 |
| Northernmost Countries | 0 | - | 4.99 | 359,969 |
| Countries of South America | 0 | - | 5.00 | 921,452 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,218 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,862,839 |
| "Land" Countries | 0 | - | 4.98 | 335,486 |
| Biggest City by River | 0 | - | 4.41 | 52,805 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,461 |
| Landforms by Country | 0 | - | 4.52 | 51,951 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,012 |
| African Great Lakes | 0 | - | 4.82 | 65,877 |
| Seas of Europe | 0 | - | 4.37 | 84,546 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,726 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,325 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,653 |
| Countries with Megacities | 0 | - | 4.99 | 249,713 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,491 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,766 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,827 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,741 |
| Countries by Official Language | 0 | - | 4.95 | 194,428 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,250 |
| Countries in their Native Language | 0 | - | 4.99 | 197,991 |
| Independence from Whom | 0 | - | 4.99 | 211,096 |
| Subdivisions by Country | 0 | - | 4.86 | 50,247 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,539 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,117 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,141 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,695 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,984 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,577 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,306 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,799 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,721 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,442 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,883 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,611 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,653 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,823 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,720 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,000 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,275 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,894 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,903 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,288 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,806 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,529 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,033 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,409 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,585 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,740 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,208 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,197 |
| Widest Countries East to West | 0 | - | 4.92 | 129,258 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,356 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,811 |
| 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 | 94,433 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,102 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,457 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,182 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,706 |
| Countries with Double Letters | 0 | - | 4.97 | 94,827 |
| Countries that End in N | 0 | - | 4.95 | 169,350 |
| Countries with Five Letters | 0 | - | 4.96 | 277,548 |
| Countries with Six Letters | 0 | - | 4.94 | 212,181 |
| Countries with W | 0 | - | 4.97 | 159,325 |
| Countries with Z | 0 | - | 4.98 | 289,525 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,533 |
| Countries That End in U | 0 | - | 4.95 | 120,306 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,545 |
| Countries that End in O | 0 | - | 4.92 | 159,116 |
| Countries that End in R | 0 | - | 4.87 | 118,666 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,447 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,119 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,978 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,983 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,571 |
| Countries That End in Y | 0 | - | 4.90 | 185,584 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,067 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,288 |
| Countries that End in I | 0 | - | 4.94 | 134,793 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,909 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,511 |
| Countries That End in NIA | 0 | - | 4.92 | 109,429 |
| Countries That End in BIA | 0 | - | 4.93 | 148,733 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,596 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,946 |
| Countries That End in RIA | 0 | - | 4.93 | 126,443 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,532 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,414 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,070 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,412 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,993 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,253 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,584 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,123 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,026 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,134 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,391 |
| Countries that End in L | 0 | - | 4.94 | 156,461 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,557 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,132 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,783 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,651 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,702 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,539 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,981 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,500 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,957 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,431 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,336 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,903 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,331 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,567 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,590 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,818,448 |
| One Border Countries | 0 | - | 4.98 | 467,119 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,610,012 |
