| World's Longest Rivers | 0 | - | 4.90 | 137,578 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,376 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,075 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,165 |
| North Sea Countries | 0 | - | 4.92 | 87,685 |
| Black Sea Countries | 0 | - | 4.87 | 60,734 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,571 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,668 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,364 |
| Seas on the World Map | 0 | - | 4.96 | 135,944 |
| Seas of the World | 0 | - | 5.00 | 158,378 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,032 |
| Countries with Fjords | 0 | - | 4.94 | 101,309 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,891 |
| Layers of the Earth and Atmosphere | 0 | - | 4.97 | 50,697 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,100 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,914 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,651 |
| Famous Rivers | 0 | - | 4.75 | 105,225 |
| City to River #1 | 0 | - | 4.59 | 35,901 |
| Most Populous River Basins | 0 | - | 4.55 | 39,811 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,477 |
| Countries With No Rivers | 0 | - | 4.96 | 77,115 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,983 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,869 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,307 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,288 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,723 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,302 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,860 |
| Megadiverse Countries | 0 | - | 4.96 | 135,264 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,952 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,991 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,400 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,072 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,147 |
| Rivers by City | 0 | - | 4.38 | 31,772 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,214 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,082 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,790 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,623 |
| Geologic Time Scale | 0 | - | 4.41 | 10,064 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,252 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,847 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,343 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,067 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,719 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,034 |
| Boundary Waters | 0 | - | 4.92 | 88,750 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,405 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,678 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,309 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,941 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,857,976 |
| Biggest City by River | 0 | - | 4.38 | 52,956 |
| Landlocked Countries | 0 | - | 4.99 | 425,508 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,914 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,375 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,940 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,969 |
| World Capitals Quiz | 0 | - | 5.00 | 5,104,404 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,102 |
| Himalayan Countries | 0 | - | 4.93 | 140,122 |
| Andean Countries | 0 | - | 4.94 | 85,371 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,517 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,900 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,095 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,369 |
| Danube Countries | 0 | - | 4.97 | 72,347 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,543 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,799 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,040 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,546 |
| European Landlocked Countries | 0 | - | 4.99 | 147,573 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,244 |
| Countries with the Most Species | 0 | - | 4.99 | 103,541 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,362 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,763 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,868 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,816 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,554 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,980 |
| Countries in the Alps | 0 | - | 4.87 | 118,734 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,550 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,800 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,941 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,992 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,914 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,224 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,362 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,822 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,395 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,150 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,845 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,724 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,532 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,758 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,860 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,760 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,583 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,759 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,633 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,558 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,069 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,483 |
| Largest Countries By Category | 0 | - | 4.97 | 158,812 |
| Countries by Countries | 0 | - | 4.96 | 63,614 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,216 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,389 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,659 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,892 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,400 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,079 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,802,756 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,438 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,974 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,774 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,612 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,022 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,551 |
| Longest International Borders | 0 | - | 4.99 | 265,785 |
| Countries with Three Borders | 0 | - | 4.96 | 36,758 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,339 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,483 |
| Demonym of Every Country | 0 | - | 4.90 | 61,446 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,190 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,598,975 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,598 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,549 |
| Island Countries | 0 | - | 4.99 | 712,455 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,416 |
| Northernmost Countries | 0 | - | 4.99 | 363,855 |
| Countries of South America | 0 | - | 5.00 | 932,273 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,866 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,888,345 |
| "Land" Countries | 0 | - | 4.98 | 338,324 |
| Top World Languages | 0 | - | 4.92 | 829,433 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,392,973 |
| Europe Map Quiz | 0 | - | 5.00 | 4,786,862 |
| All Country Flags of the World | 0 | - | 5.00 | 3,711,134 |
| Rivers on Borders | 0 | - | 4.02 | 22,735 |
| Rivers A-Z | 0 | - | 4.35 | 32,851 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,725 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,388 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,966 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 48,007 |
| "Second Best" Geography Edition #1 | 0 | - | 4.56 | 63,661 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,722 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,392 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,067 |
| Countries with Megacities | 0 | - | 4.99 | 266,959 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,785 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,084 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,096 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,202 |
| Biggest Cities in the World | 0 | - | 4.91 | 805,278 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,253 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,314 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,952 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,177 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,195 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,097 |
| Countries by Capital City | 0 | - | 5.00 | 69,347 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,828 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,200 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,738 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,787 |
| Moved Capital Cities | 0 | - | 4.96 | 74,630 |
| Countries by Official Language | 0 | - | 4.95 | 195,950 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,564 |
| Countries in their Native Language | 0 | - | 4.99 | 199,691 |
| Independence from Whom | 0 | - | 4.99 | 213,003 |
| Subdivisions by Country | 0 | - | 4.87 | 50,604 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,401 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,907 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,530 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,588 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,221 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,767 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,831 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,080 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,557 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,965 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,249 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,478 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,361 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,433 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,136 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,565 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,795 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,287 |
| World Map Quiz | 0 | - | 4.81 | 65,673 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,113 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,696 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,551 |
| Countries by Founding Story | 0 | - | 4.95 | 77,781 |
| Countries by Road Signs | 0 | - | 4.98 | 54,331 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,204 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,044 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,537 |
