| World's Longest Rivers | 0 | - | 4.90 | 137,270 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,777 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,865 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,111 |
| North Sea Countries | 0 | - | 4.92 | 87,580 |
| Black Sea Countries | 0 | - | 4.87 | 60,689 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,497 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,601 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,320 |
| Seas on the World Map | 0 | - | 4.96 | 135,714 |
| Seas of the World | 0 | - | 5.00 | 157,767 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,959 |
| Countries with Fjords | 0 | - | 4.94 | 101,153 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,809 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,616 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,992 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,804 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,544 |
| Famous Rivers | 0 | - | 4.75 | 105,143 |
| City to River #1 | 0 | - | 4.59 | 35,879 |
| Most Populous River Basins | 0 | - | 4.55 | 39,771 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,421 |
| Countries With No Rivers | 0 | - | 4.96 | 77,003 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,418 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,829 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,278 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,271 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,687 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,090 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,688 |
| Megadiverse Countries | 0 | - | 4.96 | 135,127 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,768 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,883 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,339 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,044 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,078 |
| Rivers by City | 0 | - | 4.38 | 31,755 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,159 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,064 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,653 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,572 |
| Geologic Time Scale | 0 | - | 4.41 | 10,049 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,192 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,834 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,182 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,666 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,657 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,027 |
| Boundary Waters | 0 | - | 4.92 | 88,652 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,324 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,443 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,989 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,756 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,699,881 |
| Biggest City by River | 0 | - | 4.38 | 52,921 |
| Landlocked Countries | 0 | - | 4.99 | 423,432 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,798 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,173 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,637 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,670 |
| World Capitals Quiz | 0 | - | 5.00 | 5,092,322 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,184 |
| Himalayan Countries | 0 | - | 4.94 | 139,377 |
| Andean Countries | 0 | - | 4.94 | 84,964 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,174 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,346 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,744 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,059 |
| Danube Countries | 0 | - | 4.97 | 72,174 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,253 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,573 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,621 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,126 |
| European Landlocked Countries | 0 | - | 4.99 | 147,326 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,907 |
| Countries with the Most Species | 0 | - | 4.99 | 103,384 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,044 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,662 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,777 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,650 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,406 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,810 |
| Countries in the Alps | 0 | - | 4.87 | 118,433 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,928 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,373 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,787 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,769 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,684 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,072 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,867 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,638 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,273 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,992 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,745 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,612 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,356 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,606 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,681 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,266 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,439 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,021 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,299 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,731 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,541 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,347 |
| Largest Countries By Category | 0 | - | 4.97 | 158,483 |
| Countries by Countries | 0 | - | 4.96 | 63,403 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,936 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,337 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,603 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,151 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,173 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,844 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,789,084 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,861 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,910 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,623 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,557 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,435 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,412 |
| Longest International Borders | 0 | - | 4.99 | 265,452 |
| Countries with Three Borders | 0 | - | 4.96 | 36,673 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,219 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,331 |
| Demonym of Every Country | 0 | - | 4.90 | 61,057 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,884 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,594,281 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,978 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,284 |
| Island Countries | 0 | - | 4.99 | 711,596 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,818 |
| Northernmost Countries | 0 | - | 4.99 | 362,757 |
| Countries of South America | 0 | - | 5.00 | 929,415 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,503 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,882,002 |
| "Land" Countries | 0 | - | 4.98 | 337,757 |
| Top World Languages | 0 | - | 4.92 | 826,579 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,484 |
| Europe Map Quiz | 0 | - | 5.00 | 4,777,511 |
| All Country Flags of the World | 0 | - | 5.00 | 3,692,796 |
| Rivers on Borders | 0 | - | 4.02 | 22,724 |
| Rivers A-Z | 0 | - | 4.35 | 32,824 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,628 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,352 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,729 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 47,916 |
| "Second Best" Geography Edition #1 | 0 | - | 4.61 | 63,571 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,613 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,546 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,345 |
| Countries with Megacities | 0 | - | 4.99 | 265,606 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,140 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,702 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,401 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,780 |
| Biggest Cities in the World | 0 | - | 4.92 | 802,847 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,867 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,823 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,735 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,930 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,835 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,677 |
| Countries by Capital City | 0 | - | 5.00 | 68,950 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,568 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,986 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,802 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,576 |
| Moved Capital Cities | 0 | - | 4.96 | 74,477 |
| Countries by Official Language | 0 | - | 4.95 | 195,550 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,810 |
| Countries in their Native Language | 0 | - | 4.99 | 199,330 |
| Independence from Whom | 0 | - | 4.99 | 212,454 |
| Subdivisions by Country | 0 | - | 4.87 | 50,512 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,990 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,353 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,438 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,321 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,153 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,322 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,677 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,673 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,444 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,728 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,197 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,997 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,986 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,300 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,038 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,458 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,578 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,689 |
| World Map Quiz | 0 | - | 4.81 | 65,310 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,032 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,500 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,326 |
| Countries by Founding Story | 0 | - | 4.95 | 77,497 |
| Countries by Road Signs | 0 | - | 4.98 | 54,166 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,449 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,511 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,203 |
