| World's Longest Rivers | 0 | - | 4.87 | 118,406 |
| Countries With No Rivers | 0 | - | 4.96 | 74,694 |
| Name a Valid Country for Each River | 0 | - | 4.96 | 59,033 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 84,801 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 53,938 |
| Countries That Touch the Baltic Sea | 0 | - | 4.99 | 115,014 |
| North Sea Countries | 0 | - | 4.91 | 85,625 |
| Black Sea Countries | 0 | - | 4.87 | 59,779 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 64,298 |
| Caspian Sea Countries | 0 | - | 4.90 | 62,273 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,396 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 407,208 |
| Seas on the World Map | 0 | - | 4.97 | 131,375 |
| Seas of the World | 0 | - | 5.00 | 149,029 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 77,758 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 112,820 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 73,069 |
| Famous Rivers | 0 | - | 4.74 | 103,102 |
| City to River #1 | 0 | - | 4.58 | 34,808 |
| Most Populous River Basins | 0 | - | 4.54 | 39,148 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 39,542 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 90,654 |
| Largest Lakes in the United States on a Map | 0 | - | 4.89 | 24,039 |
| Biggest City by River | 0 | - | 4.41 | 52,319 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 82,330 |
| Countries with Fjords | 0 | - | 4.94 | 98,589 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 34,275 |
| Layers of the Earth and Atmosphere | 0 | - | 4.97 | 49,364 |
| Countries Bordering the Four Color Seas | 0 | - | 4.93 | 22,008 |
| City to River #2 - Difficult | 0 | - | 4.61 | 19,675 |
| Largest Rivers by Discharge | 0 | - | 4.52 | 15,663 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 156,948 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 26,314 |
| Biggest Lakes in the World | 0 | - | 4.63 | 87,943 |
| Great Lakes Quiz | 0 | - | 4.79 | 49,235 |
| Rivers by City Quiz | 0 | - | 4.36 | 22,225 |
| Megadiverse Countries | 0 | - | 4.97 | 132,147 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 29,281 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,706 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 36,868 |
| Rivers on Borders | 0 | - | 4.03 | 22,491 |
| Seas that Touch the Most Countries | 0 | - | 4.70 | 94,908 |
| Cities on a Map of the Great Lakes | 0 | - | 4.40 | 43,678 |
| Landforms Quiz | 0 | - | 4.38 | 76,357 |
| Geologic Time Scale | 0 | - | 4.46 | 9,701 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,552 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 20,906 |
| Indian Ocean General Knowledge | 0 | - | 4.51 | 21,927 |
| Bodies of Water by Cities | 0 | - | 4.78 | 28,089 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 56,561 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,879 |
| Boundary Waters | 0 | - | 4.92 | 87,050 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 34,021 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 93,309 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 58,448 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 58,378 |
| Countries of the World Quiz | 0 | - | 5.00 | 45,565,162 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 112,420 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 96,201 |
| World Capitals Quiz | 0 | - | 5.00 | 4,916,205 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 398,141 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,498,605 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,590,804 |
| Rivers A-Z | 0 | - | 4.35 | 32,413 |
| World Geography on a Map #1 | 0 | - | 4.94 | 72,086 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 92,785 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 161,960 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 120,253 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,528,584 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 366,180 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 391,180 |
| Island Countries Quiz | 0 | - | 4.99 | 700,072 |
| Sahara Desert Countries | 0 | - | 4.98 | 153,244 |
| Himalayan Countries | 0 | - | 4.95 | 128,847 |
| Andean Countries | 0 | - | 4.93 | 72,580 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 59,638 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 118,142 |
| Coffee Producing Countries | 0 | - | 4.81 | 62,953 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 62,109 |
| Danube Countries | 0 | - | 4.97 | 62,697 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 99,387 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 83,700 |
| Countries with the Worst Passports | 0 | - | 4.93 | 78,598 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 143,312 |
| European Landlocked Countries | 0 | - | 4.99 | 143,477 |
| Partially Recognized Countries | 0 | - | 4.98 | 102,064 |
| Countries with the Most Species | 0 | - | 4.99 | 93,831 |
| Countries 197 to 205 | 0 | - | 4.88 | 66,487 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 52,481 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 46,661 |
| Countries that Use the Peso | 0 | - | 4.87 | 57,731 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 71,267 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 55,374 |
| Countries in the Alps | 0 | - | 4.87 | 113,926 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 92,664 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 101,561 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 76,777 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 93,157 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 113,064 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 93,458 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 97,241 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 51,327 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 49,164 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 60,406 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 52,284 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,100 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 101,835 |
| Arctic Ocean Countries | 0 | - | 4.95 | 77,323 |
| Countries with the Most Grassland | 0 | - | 4.93 | 75,268 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 113,066 |
| Countries with the Most Climate Zones | 0 | - | 4.95 | 66,227 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 58,025 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.94 | 42,017 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 230,620 |
| World Countries - Blind Typing | 0 | - | 5.00 | 100,427 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 46,419 |
| Largest Countries By Category | 0 | - | 4.97 | 153,967 |
| Countries by Countries | 0 | - | 4.96 | 60,348 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,314,623 |
| Country Flags with the Most White | 0 | - | 4.86 | 134,626 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,312 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 46,817 |
| All Countries by Population With a Map | 0 | - | 4.98 | 100,820 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 94,868 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 85,822 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,016,611 |
| Northernmost Countries | 0 | - | 4.99 | 347,999 |
| Countries of South America | 0 | - | 5.00 | 888,514 |
| Countries of Oceania | 0 | - | 5.00 | 1,007,816 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,787,116 |
| Europe Map Quiz | 0 | - | 5.00 | 4,646,933 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 142,489 |
| Western Europe Map Quiz | 0 | - | 4.87 | 92,614 |
| All Country Flags of the World | 0 | - | 5.00 | 3,450,504 |
| Top World Languages | 0 | - | 4.92 | 789,259 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 80,241 |
| Who Controls It? #1 | 0 | - | 4.83 | 47,721 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,410 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 200,686 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 116,240 |
| Longest International Borders | 0 | - | 4.99 | 260,135 |
| Countries with Three Borders | 0 | - | 4.96 | 35,262 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 40,478 |
| Largest Cities for each Latitude Degree | 0 | - | 5.00 | 46,266 |
| Demonym of Every Country | 0 | - | 4.91 | 56,740 |
| Analogies of Countries #1 | 0 | - | 4.88 | 67,354 |
| Name a Valid Answer - Geography | 0 | - | 4.94 | 101,386 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,405,148 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 369,761 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 165,783 |
| Countries with Megacities | 0 | - | 4.99 | 225,972 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 192,047 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 109,086 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 130,980 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 76,612 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 309,723 |
| Biggest Cities in the World | 0 | - | 4.91 | 768,038 |
| Global Cities on a World Map | 0 | - | 4.93 | 130,139 |
| Northernmost Capital Cities | 0 | - | 4.98 | 105,285 |
| Most Remote Capital Cities | 0 | - | 4.91 | 50,553 |
| Capital Cities: Ports and Saints | 0 | - | 4.95 | 42,068 |
| Capitals with the Shortest Names | 0 | - | 4.96 | 103,605 |
| Same Letter Country and Capital | 0 | - | 4.99 | 142,304 |
| Countries by Capital City | 0 | - | 5.00 | 62,552 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 73,911 |
| Capitals of the Largest Countries by Area | 0 | - | 4.95 | 111,900 |
| World Capitals by Proximity | 0 | - | 4.90 | 319,019 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 81,226 |
| Moved Capital Cities | 0 | - | 4.95 | 72,012 |
| Countries by Official Language | 0 | - | 4.94 | 188,628 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 287,890 |
| Countries in their Native Language | 0 | - | 4.99 | 192,561 |
| Independence from Whom | 0 | - | 4.99 | 204,933 |
| Subdivisions by Country | 0 | - | 4.85 | 49,343 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 127,219 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 126,109 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,057 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 123,267 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,211 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.86 | 49,867 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 157,943 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 60,812 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 90,047 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 150,930 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 81,478 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,008 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 71,556 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 105,840 |
| Countries Furthest from the United States | 0 | - | 4.94 | 87,170 |
| Countries with the Highest HDI | 0 | - | 4.95 | 135,530 |
| Straight Shot to the Arctic Circle | 0 | - | 4.87 | 73,341 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 69,706 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 103,572 |
| Which Country of the United Kingdom? | 0 | - | 4.57 | 38,268 |
| World Map Quiz | 0 | - | 4.84 | 60,643 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 143,942 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 88,826 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.83 | 60,856 |
| Countries by Founding Story | 0 | - | 4.95 | 74,772 |
| Countries by Road Signs | 0 | - | 4.98 | 51,282 |
