| World's Longest Rivers | 0 | - | 4.90 | 137,407 |
| Countries With No Rivers | 0 | - | 4.96 | 77,055 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,767 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,168 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,743 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,129 |
| North Sea Countries | 0 | - | 4.92 | 87,620 |
| Black Sea Countries | 0 | - | 4.87 | 60,705 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,520 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,623 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,337 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,929 |
| Seas on the World Map | 0 | - | 4.96 | 135,803 |
| Seas of the World | 0 | - | 5.00 | 157,952 |
| Famous Rivers | 0 | - | 4.75 | 105,181 |
| City to River #1 | 0 | - | 4.59 | 35,886 |
| Most Populous River Basins | 0 | - | 4.55 | 39,784 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,435 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,836 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,919 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,692 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,989 |
| Countries with Fjords | 0 | - | 4.94 | 101,206 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,832 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,640 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,109 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,697 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,209 |
| Rivers by City | 0 | - | 4.38 | 31,763 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,177 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,069 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,009 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,245 |
| Biggest City by River | 0 | - | 4.38 | 52,930 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,817 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,841 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,577 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,677 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,849 |
| Megadiverse Countries | 0 | - | 4.96 | 135,168 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,362 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,053 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,593 |
| Rivers on Borders | 0 | - | 4.02 | 22,728 |
| Geologic Time Scale | 0 | - | 4.41 | 10,058 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,036 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,842 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,293 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,278 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,700 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,807 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,031 |
| Boundary Waters | 0 | - | 4.92 | 88,694 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,347 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,514 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,104 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,813 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,815 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,755,194 |
| Landlocked Countries | 0 | - | 4.99 | 424,124 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 584,283 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,835 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,251 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,755 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,779 |
| World Capitals Quiz | 0 | - | 5.00 | 5,096,829 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,469 |
| Himalayan Countries | 0 | - | 4.94 | 139,636 |
| Andean Countries | 0 | - | 4.94 | 85,112 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,299 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,537 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,865 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,159 |
| Danube Countries | 0 | - | 4.97 | 72,236 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,363 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,660 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,779 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,266 |
| European Landlocked Countries | 0 | - | 4.99 | 147,416 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,024 |
| Countries with the Most Species | 0 | - | 4.99 | 103,447 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,157 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,693 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,804 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,717 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,449 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,867 |
| Countries in the Alps | 0 | - | 4.87 | 118,524 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,181 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,513 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,830 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,840 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,769 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,110 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,955 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,698 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,320 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,033 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,775 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,640 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,409 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,652 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,744 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,428 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,491 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,389 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,438 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,045 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,736 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,404 |
| Largest Countries By Category | 0 | - | 4.97 | 158,584 |
| Countries by Countries | 0 | - | 4.96 | 63,466 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,043 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,356 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,632 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,390 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,231 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,939 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,794,019 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,226 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,299 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,940 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,689 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,580 |
| Rivers A-Z | 0 | - | 4.35 | 32,839 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,657 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,458 |
| Longest International Borders | 0 | - | 4.99 | 265,567 |
| Countries with Three Borders | 0 | - | 4.96 | 36,704 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,269 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,401 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 37,129 |
| Demonym of Every Country | 0 | - | 4.90 | 61,219 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,583 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,995 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,198 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,715 |
| Island Countries | 0 | - | 4.99 | 711,906 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,670 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,845 |
| Northernmost Countries | 0 | - | 4.99 | 363,246 |
| Countries of South America | 0 | - | 5.00 | 930,352 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,787 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,352 |
| "Land" Countries | 0 | - | 4.98 | 337,964 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,875 |
| All Country Flags of the World | 0 | - | 5.00 | 3,699,896 |
| Top World Languages | 0 | - | 4.92 | 827,643 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,167 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,665 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,825 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,711 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,856 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,599 |
| Countries with Megacities | 0 | - | 4.99 | 266,084 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,347 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,804 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,619 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,930 |
| Biggest Cities in the World | 0 | - | 4.92 | 803,787 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,012 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,936 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,822 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,006 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,945 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,830 |
| Countries by Capital City | 0 | - | 5.00 | 69,110 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,678 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,072 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,180 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,646 |
| Moved Capital Cities | 0 | - | 4.96 | 74,543 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,752 |
| Countries by Official Language | 0 | - | 4.95 | 195,706 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,208 |
| Countries in their Native Language | 0 | - | 4.99 | 199,476 |
| Independence from Whom | 0 | - | 4.99 | 212,669 |
| Subdivisions by Country | 0 | - | 4.87 | 50,547 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,152 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,577 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,467 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,364 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,170 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,402 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,723 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,832 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,479 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,760 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,215 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,133 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,283 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,350 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,072 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,490 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,613 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,922 |
| World Map Quiz | 0 | - | 4.81 | 65,405 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,434 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,548 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,406 |
