| Countries With No Rivers | 0 | - | 4.96 | 77,238 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,219 |
| Countries with Fjords | 0 | - | 4.94 | 101,543 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,020 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,216 |
| North Sea Countries | 0 | - | 4.92 | 87,765 |
| Black Sea Countries | 0 | - | 4.87 | 60,783 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,650 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,735 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,413 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 414,333 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,426 |
| Megadiverse Countries | 0 | - | 4.96 | 148,141 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,070 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,056 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,731 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,845 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,782 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,654 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,948,913 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,989 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,688 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,762 |
| Landlocked Countries | 0 | - | 4.99 | 426,989 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,495 |
| Countries that Start with A | 0 | - | 4.98 | 2,177,745 |
| Countries that Start with B | 0 | - | 4.95 | 2,308,366 |
| Countries that Start with C | 0 | - | 4.96 | 1,832,956 |
| Countries that Start with D | 0 | - | 4.96 | 717,453 |
| Countries that Start with E | 0 | - | 4.95 | 1,386,255 |
| Countries that Start with G | 0 | - | 4.97 | 1,512,796 |
| Countries that Start with H | 0 | - | 4.96 | 610,287 |
| Countries that Start with I | 0 | - | 4.92 | 1,295,498 |
| Countries that Start with J | 0 | - | 4.98 | 607,684 |
| Countries that Start with K | 0 | - | 4.97 | 821,505 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,776 |
| Countries that Start with N | 0 | - | 4.93 | 1,124,825 |
| Countries that Start with P | 0 | - | 4.94 | 1,222,992 |
| Countries that Start with S | 0 | - | 4.98 | 1,764,440 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,637 |
| Countries that Start with U | 0 | - | 4.97 | 909,033 |
| Countries that Start with V | 0 | - | 4.98 | 612,420 |
| Countries that Start with F | 0 | - | 4.83 | 621,837 |
| Countries that Start with M | 0 | - | 4.97 | 1,389,281 |
| Rivers of the United States | 0 | - | 4.93 | 66,762 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,893 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,637 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,839 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,253 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,711 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,725 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,347 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,979 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,196 |
| Island Countries | 0 | - | 4.99 | 712,900 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,794 |
| Himalayan Countries | 0 | - | 4.93 | 140,712 |
| Andean Countries | 0 | - | 4.94 | 85,743 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,867 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,411 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,425 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,646 |
| Danube Countries | 0 | - | 4.97 | 72,521 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,746 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,944 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,385 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,839 |
| European Landlocked Countries | 0 | - | 4.99 | 147,710 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,488 |
| Countries with the Most Species | 0 | - | 4.99 | 103,628 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,592 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,804 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,939 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,904 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,660 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,109 |
| Countries in the Alps | 0 | - | 4.87 | 118,930 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,922 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,070 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,044 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,143 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,094 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,363 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,547 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,972 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,497 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,291 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,941 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,818 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,655 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,904 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,999 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,092 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,703 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,214 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,805 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,182 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,419 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,597 |
| Largest Countries By Category | 0 | - | 4.97 | 159,039 |
| Countries by Countries | 0 | - | 4.97 | 63,786 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,243 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,199 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,842 |
| Northernmost Countries | 0 | - | 4.99 | 364,470 |
| Landforms by Country | 0 | - | 4.52 | 52,031 |
| Countries of South America | 0 | - | 5.00 | 933,912 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,971 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,117 |
| "Land" Countries | 0 | - | 4.98 | 338,888 |
| African Great Lakes | 0 | - | 4.82 | 67,090 |
| Capitals by River | 0 | - | 4.55 | 48,401 |
| Rivers A-Z | 0 | - | 4.35 | 32,870 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,487 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,619 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,861 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,429 |
| Countries with Megacities | 0 | - | 4.99 | 267,689 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,076 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,290 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,416 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,404 |
| Countries by Official Language | 0 | - | 4.95 | 196,166 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,871 |
| Countries in their Native Language | 0 | - | 4.99 | 199,915 |
| Independence from Whom | 0 | - | 4.99 | 213,340 |
| Subdivisions by Country | 0 | - | 4.87 | 50,653 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,618 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,093 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,569 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,783 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,248 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,426 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,911 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,245 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,608 |
| Countries with the Most Wild Elephants | 0 | - | 4.64 | 55,215 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,146 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,100 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,712 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,466 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,491 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,201 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,782 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,448 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,201 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,671 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,850 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,528 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,634 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,830 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,750 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,911 |
| Widest Countries East to West | 0 | - | 4.92 | 130,812 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,624 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,360 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,548 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,136 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,076 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,590 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,526 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,916 |
| Countries with Double Letters | 0 | - | 4.96 | 97,530 |
| Countries that End in N | 0 | - | 4.95 | 172,552 |
| Countries with Five Letters | 0 | - | 4.96 | 284,523 |
| Countries with Six Letters | 0 | - | 4.94 | 214,873 |
| Countries with W | 0 | - | 4.96 | 161,252 |
| Countries with Z | 0 | - | 4.98 | 292,904 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,611 |
| Countries That End in U | 0 | - | 4.95 | 121,357 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,364 |
| Countries that End in O | 0 | - | 4.92 | 160,347 |
| Countries that End in R | 0 | - | 4.87 | 119,261 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,043 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,088 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 184,330 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,123 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,614 |
| Countries That End in Y | 0 | - | 4.91 | 186,158 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,135 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,385 |
| Countries that End in I | 0 | - | 4.94 | 135,403 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,163 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,123 |
| Countries That End in NIA | 0 | - | 4.92 | 110,139 |
| Countries That End in BIA | 0 | - | 4.93 | 149,703 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,902 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,872 |
| Countries That End in RIA | 0 | - | 4.93 | 127,123 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,518 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,877 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,343 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,802 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,357 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,900 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,425 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,589 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,719 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,565 |
