| World's Longest Rivers | 0 | - | 4.89 | 136,315 |
| Countries With No Rivers | 0 | - | 4.96 | 76,725 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 62,014 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,682 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,296 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,326 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,994 |
| North Sea Countries | 0 | - | 4.92 | 87,331 |
| Black Sea Countries | 0 | - | 4.87 | 60,582 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,337 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,429 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,197 |
| Seas on the World Map | 0 | - | 4.96 | 135,201 |
| Seas of the World | 0 | - | 5.00 | 156,524 |
| Famous Rivers | 0 | - | 4.75 | 104,907 |
| City to River #1 | 0 | - | 4.59 | 35,837 |
| Most Populous River Basins | 0 | - | 4.55 | 39,689 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,323 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,774 |
| Countries with Fjords | 0 | - | 4.94 | 100,811 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,394 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,641 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,625 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,439 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,915 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,371 |
| Biggest City by River | 0 | - | 4.41 | 52,832 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,048 |
| Rivers by City | 0 | - | 4.38 | 31,703 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,017 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,008 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,484 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,775 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,344 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,354 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,513 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,681 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,513 |
| Megadiverse Countries | 0 | - | 4.96 | 134,796 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,209 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,995 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,495 |
| Geologic Time Scale | 0 | - | 4.46 | 10,004 |
| Rivers on Borders | 0 | - | 4.02 | 22,688 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,728 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,794 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,218 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,217 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,600 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,009 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,622 |
| Boundary Waters | 0 | - | 4.92 | 88,402 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,107 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,967 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,252 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,379 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,365,483 |
| Landlocked Countries | 0 | - | 4.99 | 419,378 |
| World Capitals Quiz | 0 | - | 5.00 | 5,066,229 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,759,501 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,524 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,688 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,745 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,983 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,384 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,583,850 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,712 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,349 |
| Island Countries | 0 | - | 4.99 | 709,945 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,170 |
| Himalayan Countries | 0 | - | 4.95 | 137,603 |
| Andean Countries | 0 | - | 4.95 | 84,036 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,291 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,775 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,902 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,404 |
| Danube Countries | 0 | - | 4.97 | 71,709 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,617 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,107 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,728 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,804 |
| European Landlocked Countries | 0 | - | 4.99 | 146,817 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,191 |
| Countries with the Most Species | 0 | - | 4.99 | 102,965 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,337 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,441 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,603 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,337 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,016 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,403 |
| Countries in the Alps | 0 | - | 4.87 | 117,757 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,187 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,460 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,449 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,047 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,154 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,748 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,338 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,232 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,994 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,592 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,510 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,358 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,964 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,227 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,251 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,274 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,089 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,592 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,600 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,563 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,335 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,021 |
| Largest Countries By Category | 0 | - | 4.97 | 157,718 |
| Countries by Countries | 0 | - | 4.96 | 62,880 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,273 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,173 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,479 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,682 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,691 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,372 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,525 |
| Northernmost Countries | 0 | - | 4.99 | 360,674 |
| Countries of South America | 0 | - | 5.00 | 923,521 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,882 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,867 |
| "Land" Countries | 0 | - | 4.98 | 335,903 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,574 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,419 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,760 |
| Top World Languages | 0 | - | 4.92 | 820,738 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,263 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,401 |
| Rivers A-Z | 0 | - | 4.35 | 32,771 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,204 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,101 |
| Longest International Borders | 0 | - | 4.99 | 264,728 |
| Countries with Three Borders | 0 | - | 4.96 | 36,472 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,934 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,045 |
| Demonym of Every Country | 0 | - | 4.91 | 59,192 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,358 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,208 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,146 |
| Countries with Megacities | 0 | - | 4.99 | 261,601 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,013 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,064 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,296 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,094 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,935 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,032 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,277 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,332 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,043 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,730 |
| Countries by Capital City | 0 | - | 5.00 | 68,017 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,024 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,514 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,022 |
| Moved Capital Cities | 0 | - | 4.96 | 74,093 |
| Countries by Official Language | 0 | - | 4.95 | 194,720 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,645 |
| Countries in their Native Language | 0 | - | 4.99 | 198,264 |
| Independence from Whom | 0 | - | 4.99 | 211,426 |
| Subdivisions by Country | 0 | - | 4.86 | 50,302 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,788 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,602 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,206 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,775 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,030 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,757 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,407 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,039 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,867 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,511 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,001 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,091 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,742 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,015 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,803 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,177 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,348 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,691 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,313 |
| World Map Quiz | 0 | - | 4.81 | 64,662 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,806 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,070 |
| Countries by Founding Story | 0 | - | 4.95 | 77,105 |
| Countries by Road Signs | 0 | - | 4.98 | 53,698 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,604 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,980 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,701 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,454 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,573 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,721 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,866 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,297 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,327 |
| Widest Countries East to West | 0 | - | 4.92 | 129,415 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,394 |
