| North Sea Countries | 0 | - | 4.92 | 87,276 |
| Black Sea Countries | 0 | - | 4.87 | 60,563 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,284 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,392 |
| Countries With No Rivers | 0 | - | 4.96 | 76,661 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,160 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,738 |
| Countries with Fjords | 0 | - | 4.93 | 100,738 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,421 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,305 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,599 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,574 |
| Megadiverse Countries | 0 | - | 4.96 | 134,718 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,681 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 412,294 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,185 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,771 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,815 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,285,788 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,308 |
| Landlocked Countries | 0 | - | 4.99 | 418,200 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,469 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,752,557 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,854 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,618 |
| Himalayan Countries | 0 | - | 4.94 | 137,104 |
| Andean Countries | 0 | - | 4.95 | 83,771 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,014 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,394 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,691 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,253 |
| Danube Countries | 0 | - | 4.97 | 71,580 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,442 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,985 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,518 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,573 |
| European Landlocked Countries | 0 | - | 4.99 | 146,690 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,021 |
| Countries with the Most Species | 0 | - | 4.99 | 102,808 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,155 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,399 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,558 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,258 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,930 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,309 |
| Countries in the Alps | 0 | - | 4.87 | 117,583 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,061 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,241 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,368 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,908 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,020 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,395 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,184 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,127 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,928 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,492 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,443 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,300 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,871 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,133 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,158 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,035 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,007 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,534 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,425 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,981 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,059 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,942 |
| Largest Countries By Category | 0 | - | 4.97 | 157,531 |
| Countries by Countries | 0 | - | 4.96 | 62,774 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,260 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,984 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,617 |
| Seas on the World Map | 0 | - | 4.96 | 135,069 |
| Seas of the World | 0 | - | 5.00 | 156,185 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,633 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,331 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,405 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,744 |
| Island Countries | 0 | - | 4.99 | 709,450 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,143 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,279 |
| Northernmost Countries | 0 | - | 4.99 | 360,166 |
| Countries of South America | 0 | - | 5.00 | 922,065 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,921 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,864,335 |
| "Land" Countries | 0 | - | 4.98 | 335,633 |
| Biggest City by River | 0 | - | 4.41 | 52,812 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,477 |
| Landforms by Country | 0 | - | 4.52 | 51,953 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,017 |
| African Great Lakes | 0 | - | 4.82 | 65,972 |
| Seas of Europe | 0 | - | 4.37 | 84,558 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,321 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,476 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,769 |
| Countries with Megacities | 0 | - | 4.99 | 249,958 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,616 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,846 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,922 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,822 |
| Countries by Official Language | 0 | - | 4.95 | 194,505 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,351 |
| Countries in their Native Language | 0 | - | 4.99 | 198,072 |
| Independence from Whom | 0 | - | 4.99 | 211,176 |
| Subdivisions by Country | 0 | - | 4.86 | 50,262 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,595 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,189 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,152 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,717 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,997 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,639 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,330 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,870 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,788 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,455 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,953 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,776 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,672 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,928 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,744 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,087 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,287 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,000 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,961 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,366 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,856 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,571 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,140 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,449 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,628 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,770 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,226 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,226 |
| Widest Countries East to West | 0 | - | 4.92 | 129,313 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,372 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,882 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,976 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,466 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,147 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,486 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,209 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,713 |
| Countries with Double Letters | 0 | - | 4.97 | 94,971 |
| Countries that End in N | 0 | - | 4.95 | 169,692 |
| Countries with Five Letters | 0 | - | 4.96 | 279,135 |
| Countries with Six Letters | 0 | - | 4.94 | 212,322 |
| Countries with W | 0 | - | 4.97 | 159,422 |
| Countries with Z | 0 | - | 4.98 | 289,656 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,634 |
| Countries That End in U | 0 | - | 4.95 | 120,363 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,656 |
| Countries that End in O | 0 | - | 4.92 | 159,158 |
| Countries that End in R | 0 | - | 4.87 | 118,693 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,475 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,201 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,036 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,039 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,620 |
| Countries That End in Y | 0 | - | 4.90 | 185,612 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,140 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,342 |
| Countries that End in I | 0 | - | 4.94 | 134,832 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,991 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,541 |
| Countries That End in NIA | 0 | - | 4.92 | 109,468 |
| Countries That End in BIA | 0 | - | 4.93 | 148,782 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,643 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,996 |
| Countries That End in RIA | 0 | - | 4.93 | 126,478 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,570 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,521 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,130 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,470 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,029 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,275 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,624 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,175 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,062 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,165 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,456 |
| Countries that End in L | 0 | - | 4.94 | 156,495 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,746 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,144 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,802 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,679 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,725 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,650 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,060 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,549 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,028 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,506 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,508 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,925 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,342 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,577 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,616 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,820,142 |
| One Border Countries | 0 | - | 4.98 | 467,323 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,611,912 |
