| World's Longest Rivers | 0 | - | 4.90 | 137,238 |
| Countries With No Rivers | 0 | - | 4.96 | 76,982 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,386 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,052 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,665 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,104 |
| North Sea Countries | 0 | - | 4.92 | 87,548 |
| Black Sea Countries | 0 | - | 4.87 | 60,676 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,491 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,587 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,311 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,827 |
| Seas on the World Map | 0 | - | 4.96 | 135,665 |
| Seas of the World | 0 | - | 5.00 | 157,671 |
| Famous Rivers | 0 | - | 4.75 | 105,122 |
| City to River #1 | 0 | - | 4.59 | 35,875 |
| Most Populous River Basins | 0 | - | 4.55 | 39,765 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,413 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,730 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,870 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,630 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,944 |
| Countries with Fjords | 0 | - | 4.94 | 101,125 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,799 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,603 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,059 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,650 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,184 |
| Rivers by City | 0 | - | 4.38 | 31,751 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,148 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,056 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,664 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,147 |
| Biggest City by River | 0 | - | 4.38 | 52,914 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,581 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,788 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,530 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,646 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,819 |
| Megadiverse Countries | 0 | - | 4.96 | 135,102 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,329 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,042 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,571 |
| Rivers on Borders | 0 | - | 4.02 | 22,719 |
| Geologic Time Scale | 0 | - | 4.41 | 10,044 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,969 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,828 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,272 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,267 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,676 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,769 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,027 |
| Boundary Waters | 0 | - | 4.92 | 88,634 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,307 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,400 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,928 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,727 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,699 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,671,968 |
| Landlocked Countries | 0 | - | 4.99 | 423,109 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 580,762 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,773 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,138 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,584 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,603 |
| World Capitals Quiz | 0 | - | 5.00 | 5,090,256 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,054 |
| Himalayan Countries | 0 | - | 4.94 | 139,225 |
| Andean Countries | 0 | - | 4.93 | 84,891 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,108 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,249 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,688 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,003 |
| Danube Countries | 0 | - | 4.97 | 72,143 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,204 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,552 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,545 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,062 |
| European Landlocked Countries | 0 | - | 4.99 | 147,287 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,851 |
| Countries with the Most Species | 0 | - | 4.99 | 103,354 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,979 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,650 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,770 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,625 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,372 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,793 |
| Countries in the Alps | 0 | - | 4.87 | 118,376 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,793 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,304 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,761 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,726 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,646 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,046 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,827 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,612 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,253 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,966 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,726 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,598 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,333 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,576 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,642 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,184 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,410 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,819 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,258 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,537 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,447 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,316 |
| Largest Countries By Category | 0 | - | 4.97 | 158,413 |
| Countries by Countries | 0 | - | 4.96 | 63,368 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,861 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,328 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,592 |
| All Countries by Population With a Map | 0 | - | 4.99 | 109,999 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,132 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,799 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,786,570 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,088 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,816 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,898 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,596 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,540 |
| Rivers A-Z | 0 | - | 4.35 | 32,818 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,304 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,379 |
| Longest International Borders | 0 | - | 4.99 | 265,402 |
| Countries with Three Borders | 0 | - | 4.96 | 36,666 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,196 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,309 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 37,105 |
| Demonym of Every Country | 0 | - | 4.90 | 60,954 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,592 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,593,411 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,868 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,045 |
| Island Countries | 0 | - | 4.99 | 711,449 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,505 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,319 |
| Northernmost Countries | 0 | - | 4.99 | 362,540 |
| Countries of South America | 0 | - | 5.00 | 928,932 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,877 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,841 |
| "Land" Countries | 0 | - | 4.98 | 337,654 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,794 |
| All Country Flags of the World | 0 | - | 5.00 | 3,689,317 |
| Top World Languages | 0 | - | 4.92 | 826,057 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,141 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,613 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,682 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,044 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,424 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,238 |
| Countries with Megacities | 0 | - | 4.99 | 265,366 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,053 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,652 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,302 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,722 |
| Biggest Cities in the World | 0 | - | 4.91 | 802,454 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,789 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,757 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,687 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,865 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,737 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,580 |
| Countries by Capital City | 0 | - | 5.00 | 68,856 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,508 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,944 |
| World Capitals by Proximity | 0 | - | 4.90 | 332,616 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,531 |
| Moved Capital Cities | 0 | - | 4.96 | 74,437 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,695 |
| Countries by Official Language | 0 | - | 4.95 | 195,483 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,699 |
| Countries in their Native Language | 0 | - | 4.99 | 199,261 |
| Independence from Whom | 0 | - | 4.99 | 212,355 |
| Subdivisions by Country | 0 | - | 4.87 | 50,485 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,927 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,292 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,421 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,298 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,142 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,278 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,665 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,625 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,420 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,711 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,185 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,926 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,956 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,277 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,016 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,435 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,553 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,568 |
| World Map Quiz | 0 | - | 4.81 | 65,262 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,868 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,461 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,285 |
