| World's Longest Rivers | 0 | - | 4.89 | 136,258 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,455 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,301 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,989 |
| North Sea Countries | 0 | - | 4.92 | 87,321 |
| Black Sea Countries | 0 | - | 4.87 | 60,581 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,330 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,427 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,197 |
| Seas on the World Map | 0 | - | 4.96 | 135,177 |
| Seas of the World | 0 | - | 5.00 | 156,486 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,773 |
| Countries with Fjords | 0 | - | 4.94 | 100,806 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,620 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,432 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,720 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,339 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,349 |
| Famous Rivers | 0 | - | 4.75 | 104,904 |
| City to River #1 | 0 | - | 4.59 | 35,836 |
| Most Populous River Basins | 0 | - | 4.55 | 39,685 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,316 |
| Countries With No Rivers | 0 | - | 4.96 | 76,720 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 62,002 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,677 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,217 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,213 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,665 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,285 |
| Megadiverse Countries | 0 | - | 4.96 | 134,790 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,385 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,637 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,207 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,994 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,915 |
| Rivers by City | 0 | - | 4.38 | 31,703 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,014 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,008 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,366 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,495 |
| Geologic Time Scale | 0 | - | 4.46 | 10,004 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,048 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,792 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,762 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,485 |
| Biggest City by River | 0 | - | 4.41 | 52,830 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,509 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,008 |
| Boundary Waters | 0 | - | 4.92 | 88,393 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,103 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,949 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,230 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,366 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,355,862 |
| Landlocked Countries | 0 | - | 4.99 | 419,246 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,516 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,667 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,719 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,964 |
| World Capitals Quiz | 0 | - | 5.00 | 5,065,570 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,126 |
| Himalayan Countries | 0 | - | 4.95 | 137,547 |
| Andean Countries | 0 | - | 4.95 | 84,001 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,271 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,742 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,889 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,391 |
| Danube Countries | 0 | - | 4.97 | 71,700 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,609 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,093 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,705 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,783 |
| European Landlocked Countries | 0 | - | 4.99 | 146,809 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,173 |
| Countries with the Most Species | 0 | - | 4.99 | 102,947 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,322 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,437 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,598 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,328 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,005 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,394 |
| Countries in the Alps | 0 | - | 4.87 | 117,738 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,168 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,431 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,440 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,027 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,138 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,739 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,318 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,219 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,983 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,580 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,503 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,351 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,956 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,211 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,237 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,252 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,084 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,584 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,564 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,520 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,299 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,015 |
| Largest Countries By Category | 0 | - | 4.97 | 157,692 |
| Countries by Countries | 0 | - | 4.96 | 62,866 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,255 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,171 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,479 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,626 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,681 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,357 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,758,732 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,402 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,754 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,255 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,399 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,158 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,090 |
| Longest International Borders | 0 | - | 4.99 | 264,709 |
| Countries with Three Borders | 0 | - | 4.96 | 36,466 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,928 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,033 |
| Demonym of Every Country | 0 | - | 4.91 | 59,180 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,261 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,583,571 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,685 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,265 |
| Island Countries | 0 | - | 4.99 | 709,898 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,390 |
| Northernmost Countries | 0 | - | 4.99 | 360,617 |
| Countries of South America | 0 | - | 5.00 | 923,287 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,664 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,301 |
| "Land" Countries | 0 | - | 4.98 | 335,867 |
| Top World Languages | 0 | - | 4.92 | 820,581 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,385 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,347 |
| All Country Flags of the World | 0 | - | 5.00 | 3,652,189 |
| Rivers on Borders | 0 | - | 4.02 | 22,687 |
| Rivers A-Z | 0 | - | 4.35 | 32,769 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,357 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,289 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,194 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 47,676 |
| "Second Best" Geography Edition #1 | 0 | - | 4.61 | 63,354 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,742 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,841 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,119 |
| Countries with Megacities | 0 | - | 4.99 | 261,276 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,980 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,046 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,259 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,066 |
| Biggest Cities in the World | 0 | - | 4.91 | 797,129 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,916 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,016 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,272 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,321 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,028 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,708 |
| Countries by Capital City | 0 | - | 5.00 | 67,993 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,013 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,501 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,783 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,014 |
| Moved Capital Cities | 0 | - | 4.96 | 74,082 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,446 |
| Countries by Official Language | 0 | - | 4.95 | 194,689 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,609 |
| Countries in their Native Language | 0 | - | 4.99 | 198,244 |
| Independence from Whom | 0 | - | 4.99 | 211,390 |
| Subdivisions by Country | 0 | - | 4.86 | 50,299 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,767 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,585 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,202 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,766 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,027 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,741 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,399 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,022 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,861 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,506 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,000 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,050 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,733 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,008 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,797 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,168 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,337 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,277 |
| World Map Quiz | 0 | - | 4.81 | 64,639 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,734 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,065 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,788 |
| Countries by Founding Story | 0 | - | 4.95 | 77,095 |
| Countries by Road Signs | 0 | - | 4.98 | 53,681 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,574 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,964 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,681 |
