| Countries With No Rivers | 0 | - | 4.96 | 77,295 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,284 |
| Countries with Fjords | 0 | - | 4.94 | 101,666 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,685 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,098 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,238 |
| North Sea Countries | 0 | - | 4.92 | 87,829 |
| Black Sea Countries | 0 | - | 4.87 | 60,824 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,687 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,785 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,448 |
| Megadiverse Countries | 0 | - | 4.96 | 149,852 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,162 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,117 |
| African Great Lakes | 0 | - | 4.82 | 67,211 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,424 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,824 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,943 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,857 |
| Capitals by River | 0 | - | 4.55 | 48,413 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,016,350 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,710 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,700 |
| Countries Bordering Brazil | 0 | - | 4.96 | 132,395 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 61,022 |
| 10 Longest Rivers in the United States | 0 | - | 4.86 | 39,485 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,813 |
| Rivers of the United States | 0 | - | 4.93 | 66,843 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,922 |
| Landlocked Countries | 0 | - | 4.99 | 427,835 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,311 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,538 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,816,505 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,792 |
| Landforms by Country | 0 | - | 4.52 | 52,033 |
| Countries That Border Russia | 0 | - | 4.98 | 465,131 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 113,456 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,732 |
| Countries Bordering France | 0 | - | 4.83 | 405,545 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,403 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,155 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,215 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,727 |
| Island Countries | 0 | - | 4.99 | 713,277 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,187 |
| Himalayan Countries | 0 | - | 4.93 | 141,070 |
| Andean Countries | 0 | - | 4.94 | 85,928 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,032 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,672 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,582 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,778 |
| 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 | 87,034 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,560 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,038 |
| European Landlocked Countries | 0 | - | 4.99 | 147,835 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,628 |
| Countries with the Most Species | 0 | - | 4.99 | 103,682 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,734 |
| 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 | 73,719 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,186 |
| Countries in the Alps | 0 | - | 4.87 | 119,070 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,154 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,271 |
| 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 | 117,204 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,436 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,653 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,047 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,545 |
| 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 | 68,773 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,856 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,929 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,617 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,708 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,650 |
| Largest Countries By Category | 0 | - | 4.97 | 159,211 |
| Countries by Countries | 0 | - | 4.97 | 63,869 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,858 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,774 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,841 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,307 |
| One Border Countries - Shape Quiz | 0 | - | 4.84 | 65,329 |
| Merged Country Shapes Quiz #1 | 0 | - | 4.93 | 59,776 |
| Merged Country Shapes Quiz #2 | 0 | - | 4.92 | 60,587 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,880 |
| Northernmost Countries | 0 | - | 4.99 | 364,897 |
| Countries of South America | 0 | - | 5.00 | 935,089 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,585 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,114 |
| "Land" Countries | 0 | - | 4.98 | 339,210 |
| Countries Bordering India | 0 | - | 4.98 | 163,930 |
| Countries that Border China | 0 | - | 4.96 | 264,642 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,417 |
| Countries that Border Poland | 0 | - | 4.99 | 173,417 |
| Merged Countries #2 | 0 | - | 4.96 | 100,026 |
| Merged Countries #4 | 0 | - | 4.81 | 94,234 |
| Merged Countries #6 | 0 | - | 4.90 | 73,947 |
| Merged Countries #7 | 0 | - | 4.93 | 83,298 |
| Rivers A-Z | 0 | - | 4.35 | 32,878 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,521 |
| Sea in the Answers | 0 | - | 4.08 | 49,222 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,457,027 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,262 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,695 |
| Countries with Megacities | 0 | - | 4.99 | 268,251 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,321 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,429 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,675 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,553 |
| Countries by Official Language | 0 | - | 4.95 | 196,357 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,119 |
| Countries in their Native Language | 0 | - | 4.99 | 200,064 |
| Independence from Whom | 0 | - | 4.99 | 213,579 |
| Subdivisions by Country | 0 | - | 4.87 | 50,684 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,777 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,232 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,598 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,869 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,275 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,571 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,969 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,390 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,664 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,223 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,303 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,926 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,530 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,539 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,255 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,682 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,017 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,872 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,659 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,307 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,780 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,094 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,630 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,747 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,912 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,793 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,026 |
| Widest Countries East to West | 0 | - | 4.92 | 130,917 |
| 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 | 95,211 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,505 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,666 |
| 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 | 97,811 |
| Countries that End in N | 0 | - | 4.95 | 172,807 |
| Countries with Five Letters | 0 | - | 4.96 | 284,883 |
| Countries with Six Letters | 0 | - | 4.94 | 215,149 |
| Countries with W | 0 | - | 4.96 | 161,448 |
| 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 | 121,466 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,573 |
| 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 | 210,290 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,797 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,310 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,995 |
| Countries That End in Y | 0 | - | 4.91 | 186,213 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,539 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,502 |
| Countries that End in I | 0 | - | 4.94 | 135,463 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,477 |
| 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 | 168,015 |
| 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 | 111,603 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,098 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,487 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,950 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,499 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,967 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,531 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,626 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,787 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,698 |
