| World's Longest Rivers | 0 | - | 4.89 | 135,963 |
| Countries With No Rivers | 0 | - | 4.96 | 76,693 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,963 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,615 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,243 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,253 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,975 |
| North Sea Countries | 0 | - | 4.92 | 87,301 |
| Black Sea Countries | 0 | - | 4.87 | 60,572 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,309 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,407 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,175 |
| Seas on the World Map | 0 | - | 4.96 | 135,117 |
| Seas of the World | 0 | - | 5.00 | 156,322 |
| Famous Rivers | 0 | - | 4.75 | 104,873 |
| City to River #1 | 0 | - | 4.59 | 35,830 |
| Most Populous River Basins | 0 | - | 4.55 | 39,676 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,310 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,751 |
| Countries with Fjords | 0 | - | 4.94 | 100,762 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,344 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,617 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,597 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,407 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,891 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,328 |
| Biggest City by River | 0 | - | 4.41 | 52,820 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,031 |
| Rivers by City | 0 | - | 4.38 | 31,700 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,994 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,004 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,327 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,722 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,315 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,331 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,368 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,659 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,490 |
| Megadiverse Countries | 0 | - | 4.96 | 134,751 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,195 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,989 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,482 |
| Geologic Time Scale | 0 | - | 4.46 | 10,002 |
| Rivers on Borders | 0 | - | 4.02 | 22,685 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,689 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,787 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,210 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,204 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,583 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,006 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,597 |
| Boundary Waters | 0 | - | 4.92 | 88,368 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,068 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,891 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,142 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,318 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,318,958 |
| Landlocked Countries | 0 | - | 4.99 | 418,697 |
| World Capitals Quiz | 0 | - | 5.00 | 5,062,558 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,425 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,488 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,600 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,638 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,869 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,776 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,505 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,542 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,976 |
| Island Countries | 0 | - | 4.99 | 709,650 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,883 |
| Himalayan Countries | 0 | - | 4.94 | 137,318 |
| Andean Countries | 0 | - | 4.95 | 83,875 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,162 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,570 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,794 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,315 |
| Danube Countries | 0 | - | 4.97 | 71,625 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,511 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,030 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,597 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,674 |
| European Landlocked Countries | 0 | - | 4.99 | 146,741 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,097 |
| Countries with the Most Species | 0 | - | 4.99 | 102,884 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,232 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,425 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,579 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,286 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,965 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,344 |
| Countries in the Alps | 0 | - | 4.87 | 117,643 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,107 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,320 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,392 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,958 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,061 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,428 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,249 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,162 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,949 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,529 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,462 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,325 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,904 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,174 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,188 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,137 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,046 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,558 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,489 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,264 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,170 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,981 |
| Largest Countries By Category | 0 | - | 4.97 | 157,596 |
| Countries by Countries | 0 | - | 4.96 | 62,817 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,172 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,153 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,465 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,430 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,626 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,300 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,813 |
| Northernmost Countries | 0 | - | 4.99 | 360,373 |
| Countries of South America | 0 | - | 5.00 | 922,607 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,643 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,687 |
| "Land" Countries | 0 | - | 4.98 | 335,744 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,481 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,351 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,726 |
| Top World Languages | 0 | - | 4.92 | 819,982 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,204 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,386 |
| Rivers A-Z | 0 | - | 4.35 | 32,763 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,021 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,059 |
| Longest International Borders | 0 | - | 4.99 | 264,621 |
| Countries with Three Borders | 0 | - | 4.96 | 36,446 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,903 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,995 |
| Demonym of Every Country | 0 | - | 4.91 | 59,126 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,335 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,133 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,950 |
| Countries with Megacities | 0 | - | 4.99 | 258,154 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,823 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,947 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,105 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,957 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,831 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,931 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,229 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,255 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,942 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,592 |
| Countries by Capital City | 0 | - | 5.00 | 67,894 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,957 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,453 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,945 |
| Moved Capital Cities | 0 | - | 4.96 | 74,041 |
| Countries by Official Language | 0 | - | 4.95 | 194,601 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,473 |
| Countries in their Native Language | 0 | - | 4.99 | 198,144 |
| Independence from Whom | 0 | - | 4.99 | 211,254 |
| Subdivisions by Country | 0 | - | 4.86 | 50,276 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,656 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,518 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,173 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,736 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,681 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,361 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,942 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,829 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,470 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,979 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,903 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,701 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,975 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,759 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,134 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,310 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,209 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,132 |
| World Map Quiz | 0 | - | 4.81 | 64,488 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,509 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,012 |
| Countries by Founding Story | 0 | - | 4.95 | 77,044 |
| Countries by Road Signs | 0 | - | 4.98 | 53,635 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,462 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,904 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,616 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,280 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,495 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,654 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,809 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,248 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,265 |
| Widest Countries East to West | 0 | - | 4.92 | 129,347 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,377 |
