| Capital Cities by Body of Water | 0 | - | 4.85 | 57,869 |
| African Great Lakes | 0 | - | 4.82 | 67,003 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,363 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,745 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,618 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,699 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,969 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,446 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,584 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.98 | 110,027 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,557 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,469 |
| African Physical Geography | 0 | - | 4.51 | 31,823 |
| Asian Physical Geography | 0 | - | 4.61 | 35,624 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,964 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,406 |
| Countries with Glaciers | 0 | - | 4.97 | 105,820 |
| Countries with the Most Forest | 0 | - | 4.87 | 148,003 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,980 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,661 |
| Rivers of the United States | 0 | - | 4.93 | 66,704 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,935 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 33,210 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,958 |
| Landforms by Country | 0 | - | 4.52 | 52,023 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,209 |
| Capitals by River | 0 | - | 4.55 | 48,389 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,153 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,623 |
| Geological Extremes | 0 | - | 4.34 | 40,113 |
| European Physical Geography | 0 | - | 4.26 | 33,599 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 36,227 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,878 |
| Boundary Waters | 0 | - | 4.92 | 88,782 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,424 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,729 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,901,272 |
| Landlocked Countries | 0 | - | 4.99 | 426,189 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,539 |
| South China Sea Countries | 0 | - | 4.78 | 57,858 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,178 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,066 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,563 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,504 |
| World Capitals Quiz | 0 | - | 5.00 | 5,107,979 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,806,354 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.19 | 72,549 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,738 |
| South American Physical Geography | 0 | - | 4.58 | 18,406 |
| Seas of Europe | 0 | - | 4.37 | 84,930 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,937 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,032 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,051 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,703 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,600,204 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,770 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,856 |
| Island Countries | 0 | - | 4.99 | 712,667 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,421 |
| Himalayan Countries | 0 | - | 4.93 | 140,373 |
| Andean Countries | 0 | - | 4.94 | 85,536 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,689 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,113 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,259 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,493 |
| Danube Countries | 0 | - | 4.97 | 72,438 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,642 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,871 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,200 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,674 |
| European Landlocked Countries | 0 | - | 4.99 | 147,640 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,349 |
| Countries with the Most Species | 0 | - | 4.99 | 103,588 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,450 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,785 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,898 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,860 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,597 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,040 |
| Countries in the Alps | 0 | - | 4.87 | 118,825 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,709 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,937 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,985 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,052 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,994 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,289 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,437 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,888 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,446 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,209 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,898 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,758 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,579 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,823 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,915 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,917 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,637 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 74,551 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,713 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,847 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,223 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,532 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,671 |
| Largest Countries By Category | 0 | - | 4.97 | 158,904 |
| Least-Forested Countries | 0 | - | 4.53 | 65,426 |
| Countries by Countries | 0 | - | 4.96 | 63,670 |
| Top 10 African Countries by Coastline | 0 | - | 4.29 | 48,002 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,413 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,352 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,130 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,086 |
| Northernmost Countries | 0 | - | 4.99 | 364,165 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,738 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,868 |
| Countries of South America | 0 | - | 5.00 | 933,082 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,928 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,248 |
| "Land" Countries | 0 | - | 4.98 | 338,461 |
| Countries with More Cows than People | 0 | - | 4.46 | 61,671 |
| Countries Closest to the Aegean Sea | 0 | - | 4.75 | 67,039 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,491 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,992 |
| Top World Languages | 0 | - | 4.92 | 830,166 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,820 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,622 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,464 |
| Sea in the Answers | 0 | - | 4.08 | 49,163 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,170 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,589 |
| Longest International Borders | 0 | - | 4.99 | 265,851 |
| Countries with Three Borders | 0 | - | 4.96 | 36,786 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,370 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,509 |
| Demonym of Every Country | 0 | - | 4.90 | 61,513 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,195 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,738 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,011 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,247 |
| Countries with Megacities | 0 | - | 4.99 | 267,302 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,926 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,184 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,249 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,300 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,355 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,399 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,001 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,241 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,271 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,195 |
| Countries by Capital City | 0 | - | 5.00 | 69,451 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,891 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,261 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,842 |
| Moved Capital Cities | 0 | - | 4.96 | 74,672 |
| Countries by Official Language | 0 | - | 4.95 | 196,057 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,701 |
| Countries in their Native Language | 0 | - | 4.99 | 199,789 |
| Independence from Whom | 0 | - | 4.99 | 213,144 |
| Subdivisions by Country | 0 | - | 4.87 | 50,632 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,501 |
| Megadiverse Countries | 0 | - | 4.96 | 135,298 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,989 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,549 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,725 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,233 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,311 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,871 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,149 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,578 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,096 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,263 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,593 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,397 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,455 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,160 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,596 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,895 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,611 |
| Bay of Bengal Countries With an Empty Map | 0 | - | 4.67 | 75,747 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,427 |
| World Map Quiz | 0 | - | 4.81 | 65,782 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,737 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,789 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,584 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,320 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,127 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,600 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,660 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,470 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,572 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,774 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,714 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,790 |
| Widest Countries East to West | 0 | - | 4.92 | 130,698 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,606 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,283 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,526 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,080 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,010 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,506 |
