| Natural Features of Countries #1 | 0 | - | 4.87 | 84,242 |
| Countries with Fjords | 0 | - | 4.94 | 101,593 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,407 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,901 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,226 |
| North Sea Countries | 0 | - | 4.92 | 87,787 |
| Black Sea Countries | 0 | - | 4.87 | 60,803 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,661 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,753 |
| Countries With No Rivers | 0 | - | 4.96 | 77,255 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,425 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,101 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,070 |
| African Great Lakes | 0 | - | 4.82 | 67,113 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,666 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,045 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,695 |
| Megadiverse Countries | 0 | - | 4.96 | 149,058 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,775 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,591 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,999 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,451 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,772 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,890 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 110,053 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,820 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,464 |
| Rivers of the United States | 0 | - | 4.93 | 66,782 |
| African Physical Geography | 0 | - | 4.51 | 31,835 |
| Asian Physical Geography | 0 | - | 4.61 | 35,642 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,859 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,770 |
| Countries with Glaciers | 0 | - | 4.97 | 105,894 |
| Countries with the Most Forest | 0 | - | 4.88 | 148,306 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 65,048 |
| Landforms by Country | 0 | - | 4.52 | 52,031 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,772 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,230 |
| Capitals by River | 0 | - | 4.55 | 48,405 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,277 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,750 |
| Geological Extremes | 0 | - | 4.34 | 40,125 |
| European Physical Geography | 0 | - | 4.26 | 33,617 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 36,267 |
| Least Forested Countries in Asia | 0 | - | 4.75 | 64,979 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,942 |
| Biggest City by River | 0 | - | 4.38 | 52,983 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 60,221 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,697 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,969,719 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,553 |
| Countries with the Most Wild Elephants | 0 | - | 4.64 | 55,225 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,115 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,615 |
| Top 15 Countries with the Most Cows | 0 | - | 4.73 | 107,537 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,744 |
| South American Physical Geography | 0 | - | 4.58 | 18,412 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,502 |
| Seas of Europe | 0 | - | 4.37 | 84,962 |
| Boundary Waters | 0 | - | 4.92 | 88,836 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,467 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,839 |
| World Capitals Quiz | 0 | - | 5.00 | 5,113,786 |
| Landlocked Countries | 0 | - | 4.99 | 427,248 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,684 |
| Least-Forested Countries | 0 | - | 4.53 | 65,456 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,402 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,759 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,932 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,475 |
| Countries with More Cows than People | 0 | - | 4.46 | 61,744 |
| Rivers A-Z | 0 | - | 4.35 | 32,875 |
| Sea in the Answers | 0 | - | 4.08 | 49,205 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,201 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,993 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,169 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,190 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,618 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,602,263 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,039 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,364 |
| Island Countries | 0 | - | 4.99 | 713,013 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,915 |
| Himalayan Countries | 0 | - | 4.93 | 140,832 |
| Andean Countries | 0 | - | 4.94 | 85,802 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,918 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,491 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,467 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,691 |
| Danube Countries | 0 | - | 4.97 | 72,559 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,801 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,972 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,445 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,918 |
| European Landlocked Countries | 0 | - | 4.99 | 147,741 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,540 |
| Countries with the Most Species | 0 | - | 4.99 | 103,645 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,640 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,814 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,953 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,926 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,680 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,131 |
| Countries in the Alps | 0 | - | 4.87 | 118,975 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,994 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,134 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,172 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,128 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,390 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,598 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,992 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,515 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,315 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,954 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,831 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,676 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,924 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,022 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,150 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,735 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,455 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,843 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,309 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,494 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,617 |
| Largest Countries By Category | 0 | - | 4.97 | 159,096 |
| Countries by Countries | 0 | - | 4.97 | 63,808 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,057 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,621 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,231 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,162 |
| Northernmost Countries | 0 | - | 4.99 | 364,597 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 37,977 |
| Countries of South America | 0 | - | 5.00 | 934,301 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,537 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,036 |
| "Land" Countries | 0 | - | 4.98 | 338,995 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,326 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,045 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,580 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,026 |
| All Country Flags of the World | 0 | - | 5.00 | 3,724,644 |
| Top World Languages | 0 | - | 4.92 | 831,252 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,887 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,656 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,407 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,657 |
| Longest International Borders | 0 | - | 4.99 | 266,000 |
| Countries with Three Borders | 0 | - | 4.96 | 36,828 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,425 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,570 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 120,028 |
| Demonym of Every Country | 0 | - | 4.90 | 61,635 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,360 |
| Elements Named for Countries | 0 | - | 4.52 | 25,035 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,973 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,776 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,039 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,981 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,502 |
| Countries with Megacities | 0 | - | 4.99 | 267,851 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,153 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,337 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,476 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,438 |
| Biggest Cities in the World | 0 | - | 4.91 | 806,974 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,508 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,556 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,085 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,349 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,441 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,376 |
| Countries by Capital City | 0 | - | 5.00 | 69,625 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,145 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,358 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,423 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,960 |
| Moved Capital Cities | 0 | - | 4.96 | 74,734 |
| Countries by Official Language | 0 | - | 4.95 | 196,223 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,947 |
| Countries in their Native Language | 0 | - | 4.99 | 199,964 |
| Independence from Whom | 0 | - | 4.99 | 213,409 |
| Subdivisions by Country | 0 | - | 4.87 | 50,667 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,665 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,137 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,577 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,809 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,259 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,473 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,281 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,626 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,166 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,772 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,488 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,508 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,218 |
| Most Forested European Countries | 0 | - | 4.80 | 75,747 |
