| Capital Cities by Body of Water | 0 | - | 4.85 | 57,918 |
| African Great Lakes | 0 | - | 4.82 | 67,190 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,420 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,855 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,681 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,772 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,093 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 61,021 |
| 10 Longest Rivers in the United States | 0 | - | 4.86 | 39,479 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,815 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,937 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 110,062 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,851 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,359 |
| Five Most Elevated Countries by Continent | 0 | - | 4.98 | 113,698 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,608 |
| African Physical Geography | 0 | - | 4.51 | 31,848 |
| Asian Physical Geography | 0 | - | 4.61 | 35,649 |
| Rivers of the United States | 0 | - | 4.93 | 66,841 |
| Countries with Glaciers | 0 | - | 4.97 | 105,926 |
| Countries with the Most Forest | 0 | - | 4.88 | 148,334 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 65,075 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,806 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,330 |
| Landforms by Country | 0 | - | 4.52 | 52,033 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,247 |
| Capitals by River | 0 | - | 4.55 | 48,412 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,303 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,787 |
| Geological Extremes | 0 | - | 4.34 | 40,131 |
| European Physical Geography | 0 | - | 4.26 | 33,623 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 36,282 |
| Least Forested Countries in Asia | 0 | - | 4.75 | 65,001 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,954 |
| South China Sea Countries | 0 | - | 4.78 | 57,895 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,798 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 60,242 |
| Boundary Waters | 0 | - | 4.92 | 88,873 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,493 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,907 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,010,227 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,561 |
| Countries with the Most Wild Elephants | 0 | - | 4.64 | 55,251 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,134 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,650 |
| Countries with the Highest Elevation with Exceptions | 0 | - | 4.70 | 59,773 |
| Top 15 Countries with the Most Cows | 0 | - | 4.72 | 107,556 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.19 | 72,714 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,748 |
| South American Physical Geography | 0 | - | 4.58 | 18,416 |
| Seas of Europe | 0 | - | 4.37 | 84,983 |
| World Capitals Quiz | 0 | - | 5.00 | 5,117,365 |
| Landlocked Countries | 0 | - | 4.99 | 427,752 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,691 |
| Least-Forested Countries | 0 | - | 4.53 | 65,485 |
| Top 10 African Countries by Coastline | 0 | - | 4.29 | 48,014 |
| Bay of Bengal Countries With an Empty Map | 0 | - | 4.64 | 75,819 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,421 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,769 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,970 |
| Mountains by Country | 0 | - | 4.56 | 82,054 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,950 |
| Countries with More Cows than People | 0 | - | 4.46 | 61,776 |
| Countries Closest to the Aegean Sea | 0 | - | 4.75 | 67,099 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,521 |
| Sea in the Answers | 0 | - | 4.08 | 49,222 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,205 |
| World Geography on a Map #1 | 0 | - | 4.94 | 74,020 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,243 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,269 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,079 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,603,614 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,198 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,670 |
| Island Countries | 0 | - | 4.99 | 713,232 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,150 |
| Himalayan Countries | 0 | - | 4.93 | 141,037 |
| Andean Countries | 0 | - | 4.94 | 85,909 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,021 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,645 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,566 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,767 |
| Danube Countries | 0 | - | 4.97 | 72,613 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,880 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,026 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,544 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,020 |
| European Landlocked Countries | 0 | - | 4.99 | 147,826 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,612 |
| Countries with the Most Species | 0 | - | 4.99 | 103,674 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,720 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,835 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,976 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,964 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,710 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,178 |
| Countries in the Alps | 0 | - | 4.87 | 119,056 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,137 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,264 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,095 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,222 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,197 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,431 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,648 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,038 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,541 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,355 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,983 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,853 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,711 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,964 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,066 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,273 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,771 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,808 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,909 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,586 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,649 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,645 |
| Largest Countries By Category | 0 | - | 4.97 | 159,200 |
| Countries by Countries | 0 | - | 4.97 | 63,861 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,621 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,656 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,299 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,787 |
| Northernmost Countries | 0 | - | 4.99 | 364,858 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 37,986 |
| Countries of South America | 0 | - | 5.00 | 934,980 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,383 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,860 |
| "Land" Countries | 0 | - | 4.98 | 339,186 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,348 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,343 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,636 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,036 |
| All Country Flags of the World | 0 | - | 5.00 | 3,729,512 |
| Bodies of Water by Satellite Image #2 | 0 | - | 4.36 | 19,839 |
| Top World Languages | 0 | - | 4.92 | 832,219 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,930 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,671 |
| Longest Rivers in the UK | 0 | - | 4.42 | 13,854 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,552 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,698 |
| Longest International Borders | 0 | - | 4.99 | 266,091 |
| Countries with Three Borders | 0 | - | 4.96 | 36,861 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,451 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,596 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 120,179 |
| Demonym of Every Country | 0 | - | 4.90 | 61,702 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,363 |
| Elements Named for Countries | 0 | - | 4.52 | 25,058 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,985 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,796 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,894 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,228 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,671 |
| Countries with Megacities | 0 | - | 4.99 | 268,203 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,307 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,416 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,647 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,536 |
| Biggest Cities in the World | 0 | - | 4.91 | 807,574 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,594 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,659 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,145 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,417 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,549 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,512 |
| Countries by Capital City | 0 | - | 5.00 | 69,740 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,247 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,418 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,663 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 85,024 |
| Moved Capital Cities | 0 | - | 4.96 | 74,767 |
| Countries by Official Language | 0 | - | 4.95 | 196,339 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,096 |
| Countries in their Native Language | 0 | - | 4.99 | 200,051 |
| Independence from Whom | 0 | - | 4.99 | 213,555 |
| Subdivisions by Country | 0 | - | 4.87 | 50,683 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,761 |
| Megadiverse Countries | 0 | - | 4.96 | 149,803 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,224 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,596 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,857 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,273 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,558 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,964 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,382 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,660 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,220 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,301 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,910 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,522 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,532 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,252 |
| Most Forested European Countries | 0 | - | 4.80 | 75,772 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,676 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,016 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,909 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,865 |
