| Countries With No Rivers | 0 | - | 4.96 | 77,137 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,042 |
| Countries with Fjords | 0 | - | 4.94 | 101,322 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,977 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,999 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,610 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,859 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,175 |
| North Sea Countries | 0 | - | 4.92 | 87,693 |
| Black Sea Countries | 0 | - | 4.87 | 60,742 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,586 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,675 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,368 |
| Megadiverse Countries | 0 | - | 4.96 | 135,276 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,101 |
| African Great Lakes | 0 | - | 4.82 | 66,960 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,325 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,548 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,352 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,534 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,875,003 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,626 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,646 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,581 |
| Landlocked Countries | 0 | - | 4.99 | 425,794 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,804,125 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 227,899 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,127 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,589 |
| European Countries with One Border | 0 | - | 4.97 | 183,791 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,525 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,868 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,370 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,732 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,676 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,668 |
| Island Countries | 0 | - | 4.99 | 712,549 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,230 |
| Himalayan Countries | 0 | - | 4.93 | 140,220 |
| Andean Countries | 0 | - | 4.94 | 85,436 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,588 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,976 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,148 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,422 |
| Danube Countries | 0 | - | 4.97 | 72,381 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,580 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,831 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,111 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,597 |
| European Landlocked Countries | 0 | - | 4.99 | 147,599 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,294 |
| Countries with the Most Species | 0 | - | 4.99 | 103,558 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,400 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,775 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,883 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,838 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,575 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,010 |
| Countries in the Alps | 0 | - | 4.87 | 118,768 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,618 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,851 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,960 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,021 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,945 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,247 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,391 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,858 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,418 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,177 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,865 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,741 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,554 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,788 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,885 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,826 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,605 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 69,837 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,662 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,694 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,136 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,500 |
| Largest Countries By Category | 0 | - | 4.97 | 158,859 |
| Countries by Countries | 0 | - | 4.96 | 63,638 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,551 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,102 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,663 |
| Northernmost Countries | 0 | - | 4.99 | 363,969 |
| Landforms by Country | 0 | - | 4.52 | 52,017 |
| Countries of South America | 0 | - | 5.00 | 932,609 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,259 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,076 |
| "Land" Countries | 0 | - | 4.98 | 338,373 |
| Countries That Border Russia | 0 | - | 4.98 | 464,480 |
| Countries Bordering France | 0 | - | 4.83 | 404,885 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,826 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,200 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,607 |
| Richest Countries Bordering Each Other | 0 | - | 4.99 | 154,872 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 89,463 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 113,259 |
| Countries by Bordering Flags #2 | 0 | - | 4.86 | 83,590 |
| Bordering Countries with the Largest GDPs | 0 | - | 4.97 | 76,678 |
| Seas of Europe | 0 | - | 4.37 | 84,900 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,057 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,475 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,139 |
| Countries with Megacities | 0 | - | 4.99 | 267,083 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,831 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,127 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,147 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,233 |
| Capitals by River | 0 | - | 4.55 | 48,385 |
| Countries by Official Language | 0 | - | 4.95 | 195,987 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,619 |
| Countries in their Native Language | 0 | - | 4.99 | 199,732 |
| Independence from Whom | 0 | - | 4.99 | 213,055 |
| Subdivisions by Country | 0 | - | 4.87 | 50,616 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,433 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,938 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,540 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,655 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,228 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,996 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,850 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,109 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,569 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,041 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,256 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,521 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,376 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,442 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,142 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,725 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,685 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,580 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,844 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,713 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,243 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,079 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,561 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,562 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,430 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,528 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,727 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,688 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,709 |
| Widest Countries East to West | 0 | - | 4.92 | 130,454 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,598 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,255 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,517 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,063 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,966 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,485 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,502 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,890 |
| Countries with Double Letters | 0 | - | 4.96 | 97,071 |
| Countries that End in N | 0 | - | 4.95 | 171,929 |
| Countries with Five Letters | 0 | - | 4.96 | 283,761 |
| Countries with Six Letters | 0 | - | 4.94 | 214,467 |
| Countries with W | 0 | - | 4.96 | 160,930 |
| Countries with Z | 0 | - | 4.98 | 292,444 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,283 |
| Countries That End in U | 0 | - | 4.95 | 121,190 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,104 |
| Countries that End in O | 0 | - | 4.92 | 160,216 |
| Countries that End in R | 0 | - | 4.87 | 119,183 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,936 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,827 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,152 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,827 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,759 |
| Countries That End in Y | 0 | - | 4.91 | 186,089 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,454 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,273 |
| Countries that End in I | 0 | - | 4.94 | 135,314 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,621 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,058 |
| Countries That End in NIA | 0 | - | 4.92 | 110,051 |
| Countries That End in BIA | 0 | - | 4.93 | 149,574 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,537 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,772 |
| Countries That End in RIA | 0 | - | 4.93 | 127,053 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,392 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,588 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,184 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,625 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,173 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,807 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,327 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,537 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,652 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,419 |
| Countries that End in L | 0 | - | 4.94 | 157,129 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,008 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,344 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,511 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,995 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,448 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,428 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,138 |
