| Countries With No Rivers | 0 | - | 4.96 | 76,871 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,872 |
| Countries with Fjords | 0 | - | 4.94 | 100,980 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,552 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,046 |
| North Sea Countries | 0 | - | 4.92 | 87,446 |
| Black Sea Countries | 0 | - | 4.87 | 60,634 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,420 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,519 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,261 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,208 |
| Megadiverse Countries | 0 | - | 4.96 | 134,958 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,601 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,757 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,917 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,246 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,259 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,445 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,532,074 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,784 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,532 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,342 |
| Landlocked Countries | 0 | - | 4.99 | 421,347 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,774,007 |
| Countries that Start with A | 0 | - | 4.98 | 2,164,892 |
| Countries that Start with B | 0 | - | 4.95 | 2,296,466 |
| Countries that Start with C | 0 | - | 4.96 | 1,823,754 |
| Countries that Start with D | 0 | - | 4.96 | 710,843 |
| Countries that Start with E | 0 | - | 4.95 | 1,378,543 |
| Countries that Start with G | 0 | - | 4.97 | 1,504,797 |
| Countries that Start with H | 0 | - | 4.96 | 605,618 |
| Countries that Start with I | 0 | - | 4.92 | 1,289,386 |
| Countries that Start with J | 0 | - | 4.98 | 603,252 |
| Countries that Start with K | 0 | - | 4.97 | 816,726 |
| Countries that Start with L | 0 | - | 4.98 | 1,091,793 |
| Countries that Start with N | 0 | - | 4.93 | 1,118,805 |
| Countries that Start with P | 0 | - | 4.94 | 1,217,229 |
| Countries that Start with S | 0 | - | 4.98 | 1,756,408 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,701 |
| Countries that Start with U | 0 | - | 4.97 | 905,192 |
| Countries that Start with V | 0 | - | 4.98 | 609,818 |
| Countries that Start with F | 0 | - | 4.83 | 618,264 |
| Countries that Start with M | 0 | - | 4.97 | 1,382,879 |
| Rivers of the United States | 0 | - | 4.93 | 66,265 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,704 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,828 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,285 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,595 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,248 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 136,123 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,168 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,062 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,327 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,824 |
| Island Countries | 0 | - | 4.99 | 710,800 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,138 |
| Himalayan Countries | 0 | - | 4.95 | 138,440 |
| Andean Countries | 0 | - | 4.93 | 84,445 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,649 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,610 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,279 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,679 |
| Danube Countries | 0 | - | 4.97 | 71,934 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,923 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,350 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,164 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,627 |
| European Landlocked Countries | 0 | - | 4.99 | 147,062 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,512 |
| Countries with the Most Species | 0 | - | 4.99 | 103,167 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,668 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,547 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,690 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,495 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,176 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,590 |
| Countries in the Alps | 0 | - | 4.87 | 118,096 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,647 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,917 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,602 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,533 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,419 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,894 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,582 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,440 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,138 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,784 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,613 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,472 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,156 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,413 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,450 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,739 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,244 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 61,914 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,958 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,608 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,916 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,168 |
| Largest Countries By Category | 0 | - | 4.97 | 158,090 |
| Countries by Countries | 0 | - | 4.96 | 63,122 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,065 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,605 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,027 |
| Northernmost Countries | 0 | - | 4.99 | 361,670 |
| Landforms by Country | 0 | - | 4.52 | 51,978 |
| Countries of South America | 0 | - | 5.00 | 926,371 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,672 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,875,157 |
| "Land" Countries | 0 | - | 4.98 | 337,134 |
| African Great Lakes | 0 | - | 4.82 | 66,344 |
| Capitals by River | 0 | - | 4.55 | 48,330 |
| Rivers A-Z | 0 | - | 4.35 | 32,789 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,293 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,132 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,718 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,728 |
| Countries with Megacities | 0 | - | 4.99 | 264,162 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,573 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,385 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,837 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,447 |
| Countries by Official Language | 0 | - | 4.95 | 195,121 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,195 |
| Countries in their Native Language | 0 | - | 4.99 | 198,910 |
| Independence from Whom | 0 | - | 4.99 | 211,938 |
| Subdivisions by Country | 0 | - | 4.86 | 50,398 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,620 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,964 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,313 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,948 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,086 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,029 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,558 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,373 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,993 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,006 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,609 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,908 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,067 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,550 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,840 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,161 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,926 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,286 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,965 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,202 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,923 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,034 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,819 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,951 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,249 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,406 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,521 |
| Widest Countries East to West | 0 | - | 4.92 | 129,585 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,436 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,313 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,097 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,721 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,519 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,794 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,347 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,786 |
| Countries with Double Letters | 0 | - | 4.96 | 96,066 |
| Countries that End in N | 0 | - | 4.95 | 170,953 |
| Countries with Five Letters | 0 | - | 4.96 | 282,138 |
| Countries with Six Letters | 0 | - | 4.94 | 213,375 |
| Countries with W | 0 | - | 4.97 | 160,199 |
| Countries with Z | 0 | - | 4.98 | 291,255 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,556 |
| Countries That End in U | 0 | - | 4.95 | 120,772 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,328 |
| Countries that End in O | 0 | - | 4.92 | 159,460 |
| Countries that End in R | 0 | - | 4.87 | 118,924 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,684 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,935 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,600 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,403 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,320 |
| Countries That End in Y | 0 | - | 4.91 | 185,833 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,801 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,765 |
| Countries that End in I | 0 | - | 4.94 | 135,045 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,978 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,768 |
| Countries That End in NIA | 0 | - | 4.92 | 109,721 |
| Countries That End in BIA | 0 | - | 4.93 | 149,127 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,023 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,355 |
| Countries That End in RIA | 0 | - | 4.93 | 126,764 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,943 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,403 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,592 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,985 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,560 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,533 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,948 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,427 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,378 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,892 |
