| Capital Cities by Body of Water | 0 | - | 4.85 | 57,673 |
| African Great Lakes | 0 | - | 4.82 | 66,261 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,114 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,395 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,413 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,459 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,463 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,826 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,178 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,718 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,197 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,744 |
| African Physical Geography | 0 | - | 4.51 | 31,707 |
| Asian Physical Geography | 0 | - | 4.61 | 35,527 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,756 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,177 |
| Countries with Glaciers | 0 | - | 4.97 | 105,426 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,560 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,661 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,264 |
| Rivers of the United States | 0 | - | 4.93 | 66,211 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,282 |
| Countries With The Most Bird Species | 0 | - | 4.93 | 32,957 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,823 |
| Landforms by Country | 0 | - | 4.52 | 51,971 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,082 |
| Capitals by River | 0 | - | 4.55 | 48,318 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,509 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,084 |
| Geological Extremes | 0 | - | 4.34 | 40,027 |
| European Physical Geography | 0 | - | 4.26 | 33,511 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,948 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,764 |
| Boundary Waters | 0 | - | 4.92 | 88,473 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,171 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,101 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,466,826 |
| Landlocked Countries | 0 | - | 4.99 | 420,613 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,451 |
| South China Sea Countries | 0 | - | 4.78 | 57,702 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,979 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,885 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,300 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 106,959 |
| World Capitals Quiz | 0 | - | 5.00 | 5,074,439 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,128 |
| Bodies of Water by Satellite Image #1 | 0 | - | 4.20 | 71,979 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,685 |
| South American Physical Geography | 0 | - | 4.58 | 18,350 |
| Seas of Europe | 0 | - | 4.37 | 84,649 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,613 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,005 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,193 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,373 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,631 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,074 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,286 |
| Island Countries | 0 | - | 4.99 | 710,446 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,756 |
| Himalayan Countries | 0 | - | 4.95 | 138,118 |
| Andean Countries | 0 | - | 4.95 | 84,283 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,503 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,358 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,133 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,579 |
| Danube Countries | 0 | - | 4.97 | 71,844 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,806 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,246 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,991 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,442 |
| European Landlocked Countries | 0 | - | 4.99 | 146,979 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,390 |
| Countries with the Most Species | 0 | - | 4.99 | 103,101 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,546 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,509 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,661 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,450 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,119 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,509 |
| Countries in the Alps | 0 | - | 4.87 | 117,968 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,615 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,734 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,549 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,461 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,319 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,837 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,477 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,344 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,081 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,710 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,568 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,422 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,078 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,357 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,370 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,555 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,185 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,694 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,832 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,223 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,695 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,113 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,585 |
| Largest Countries By Category | 0 | - | 4.97 | 157,942 |
| Least-Forested Countries | 0 | - | 4.53 | 65,209 |
| Countries by Countries | 0 | - | 4.97 | 63,021 |
| Top 10 African Countries by Coastline | 0 | - | 4.27 | 47,929 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,221 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,088 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,514 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,991 |
| Northernmost Countries | 0 | - | 4.99 | 361,269 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,629 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,541 |
| Countries of South America | 0 | - | 5.00 | 925,195 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,182 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,171 |
| "Land" Countries | 0 | - | 4.98 | 336,547 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,323 |
| Countries Closest to the Aegean Sea | 0 | - | 4.75 | 66,876 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,569 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,798 |
| Top World Languages | 0 | - | 4.92 | 822,348 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,364 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,444 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,258 |
| Sea in the Answers | 0 | - | 4.10 | 48,941 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,614 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,194 |
| Longest International Borders | 0 | - | 4.99 | 264,958 |
| Countries with Three Borders | 0 | - | 4.96 | 36,536 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,015 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,139 |
| Demonym of Every Country | 0 | - | 4.91 | 60,213 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,149 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,401 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,368 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,488 |
| Countries with Megacities | 0 | - | 4.99 | 263,491 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,332 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,265 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,623 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,300 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,150 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,259 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,411 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,504 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,236 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,015 |
| Countries by Capital City | 0 | - | 5.00 | 68,294 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,174 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,655 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,208 |
| Moved Capital Cities | 0 | - | 4.96 | 74,214 |
| Countries by Official Language | 0 | - | 4.95 | 194,954 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,972 |
| Countries in their Native Language | 0 | - | 4.99 | 198,470 |
| Independence from Whom | 0 | - | 4.99 | 211,737 |
| Subdivisions by Country | 0 | - | 4.86 | 50,365 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,005 |
| Megadiverse Countries | 0 | - | 4.96 | 134,897 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,814 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,266 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,849 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,061 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,924 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,489 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,232 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,942 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,568 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,045 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,358 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,798 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,097 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,874 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,254 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,420 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,968 |
| Bay of Bengal Countries With an Empty Map | 0 | - | 4.67 | 75,510 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,718 |
| World Map Quiz | 0 | - | 4.81 | 64,885 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,200 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,653 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,321 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,799 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,106 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,837 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,800 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,737 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,867 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,179 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,358 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,447 |
| Widest Countries East to West | 0 | - | 4.92 | 129,515 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,418 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,183 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,066 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,645 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,420 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,711 |
