| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,839 |
| North Sea Countries | 0 | - | 4.92 | 86,787 |
| Black Sea Countries | 0 | - | 4.87 | 60,440 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,148 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,247 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,885 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,449 |
| Countries With No Rivers | 0 | - | 4.96 | 76,219 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,041 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,156 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,021 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,418 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,543 |
| Countries with Fjords | 0 | - | 4.93 | 100,467 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,497 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,890 |
| Seas on the World Map | 0 | - | 4.96 | 134,730 |
| Seas of the World | 0 | - | 5.00 | 155,449 |
| Biggest City by River | 0 | - | 4.41 | 52,752 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,413 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,987 |
| African Great Lakes | 0 | - | 4.82 | 65,698 |
| Seas of Europe | 0 | - | 4.37 | 84,483 |
| Megadiverse Countries | 0 | - | 4.96 | 134,541 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,389 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,195 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,128 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,026 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,648 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,616 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,699 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,586 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,944 |
| Asian Physical Geography | 0 | - | 4.61 | 35,444 |
| Rivers of the United States | 0 | - | 4.93 | 65,831 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,763 |
| Countries with Glaciers | 0 | - | 4.97 | 104,851 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,878 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,407 |
| Landforms by Country | 0 | - | 4.52 | 51,939 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,749 |
| World's Longest Rivers | 0 | - | 4.88 | 121,814 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,852 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,459 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,170 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,884 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,790 |
| Capitals by River | 0 | - | 4.55 | 48,270 |
| Geological Extremes | 0 | - | 4.34 | 39,980 |
| African Physical Geography | 0 | - | 4.51 | 31,618 |
| European Physical Geography | 0 | - | 4.26 | 33,424 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,594 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,777 |
| Boundary Waters | 0 | - | 4.92 | 88,232 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,969 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,653 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,164,707 |
| Landlocked Countries | 0 | - | 4.99 | 416,671 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,385 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,772 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,733 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,072 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,859 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,656 |
| South American Physical Geography | 0 | - | 4.58 | 18,308 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,369 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,281 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,535 |
| World Capitals Quiz | 0 | - | 5.00 | 5,050,660 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,942 |
| Himalayan Countries | 0 | - | 4.95 | 136,506 |
| Andean Countries | 0 | - | 4.95 | 83,493 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,756 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,008 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,425 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,030 |
| Danube Countries | 0 | - | 4.97 | 71,431 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,217 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,850 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,158 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,125 |
| European Landlocked Countries | 0 | - | 4.99 | 146,130 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,764 |
| Countries with the Most Species | 0 | - | 4.99 | 101,614 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,899 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,329 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,510 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,161 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,809 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,192 |
| Countries in the Alps | 0 | - | 4.86 | 117,326 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,903 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,896 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,253 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,741 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,823 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,255 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,987 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,994 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,805 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,331 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,367 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,203 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,730 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,996 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,005 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,716 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,896 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,430 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,248 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,012 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,569 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,829 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,544 |
| Largest Countries By Category | 0 | - | 4.97 | 157,256 |
| Least-Forested Countries | 0 | - | 4.53 | 65,035 |
| Countries by Countries | 0 | - | 4.96 | 62,593 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,081 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,867 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,085 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,535 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,282 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,740,662 |
| Countries with More Cows than People | 0 | - | 4.45 | 60,999 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,067 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,637 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,935 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,324 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,167 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,235 |
| Famous Rivers | 0 | - | 4.74 | 104,687 |
| City to River #1 | 0 | - | 4.59 | 35,782 |
| Rivers A-Z | 0 | - | 4.35 | 32,737 |
| Most Populous River Basins | 0 | - | 4.55 | 39,600 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,211 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,114 |
| Sea in the Answers | 0 | - | 4.10 | 48,694 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,251 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,847 |
| Longest International Borders | 0 | - | 4.99 | 264,303 |
| Countries with Three Borders | 0 | - | 4.96 | 36,346 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,778 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,872 |
| Demonym of Every Country | 0 | - | 4.91 | 58,915 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,105 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,852 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,577,839 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,834 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,793 |
| Island Countries | 0 | - | 4.99 | 708,814 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,487 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,525 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,128 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,355 |
| Northernmost Countries | 0 | - | 4.99 | 359,385 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,738 |
| Countries of South America | 0 | - | 5.00 | 919,690 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,680 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,788 |
| "Land" Countries | 0 | - | 4.98 | 334,608 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 68,825 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,943 |
| All Country Flags of the World | 0 | - | 5.00 | 3,630,223 |
| Top World Languages | 0 | - | 4.92 | 817,355 |
| Organs of the Human Body (with map) | 0 | - | 4.11 | 118,869 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,273 |
| Elements Named for Countries | 0 | - | 4.52 | 24,541 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,738 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,263 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,958 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,849 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,273 |
| Countries with Megacities | 0 | - | 4.99 | 248,944 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,129 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,544 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,484 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,501 |
| Biggest Cities in the World | 0 | - | 4.91 | 794,041 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,461 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,598 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,053 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,058 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,321 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,173 |
| Countries by Capital City | 0 | - | 5.00 | 67,476 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,743 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,250 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,723 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,704 |
| Moved Capital Cities | 0 | - | 4.96 | 73,886 |
| Countries by Official Language | 0 | - | 4.95 | 194,010 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,541 |
| Countries in their Native Language | 0 | - | 4.99 | 197,635 |
| Independence from Whom | 0 | - | 4.99 | 210,807 |
| Subdivisions by Country | 0 | - | 4.86 | 50,197 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,329 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,832 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,075 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,628 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,948 |
