| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,161 |
| World's Longest Rivers | 0 | - | 4.89 | 137,625 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,130 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,178 |
| North Sea Countries | 0 | - | 4.92 | 87,702 |
| Black Sea Countries | 0 | - | 4.87 | 60,749 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,591 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,679 |
| Countries With No Rivers | 0 | - | 4.96 | 77,145 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,372 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,024 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,339 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,885 |
| Seas on the World Map | 0 | - | 4.96 | 135,977 |
| Seas of the World | 0 | - | 5.00 | 158,510 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,930 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,667 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,047 |
| Countries with Fjords | 0 | - | 4.94 | 101,331 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,986 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,006 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,907 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,707 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,822 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,739 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,265 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,076 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,512 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,365 |
| Famous Rivers | 0 | - | 4.75 | 105,248 |
| City to River #1 | 0 | - | 4.59 | 35,903 |
| Most Populous River Basins | 0 | - | 4.55 | 39,817 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,486 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,146 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,883 |
| Megadiverse Countries | 0 | - | 4.96 | 135,288 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,411 |
| Rivers by City | 0 | - | 4.38 | 31,778 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,228 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,087 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,628 |
| Geologic Time Scale | 0 | - | 4.41 | 10,067 |
| Biggest City by River | 0 | - | 4.38 | 52,966 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,121 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,850 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,311 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,288 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,729 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,034 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,864 |
| Rivers on Borders | 0 | - | 4.02 | 22,738 |
| Boundary Waters | 0 | - | 4.92 | 88,772 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,424 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,714 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,360 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,977 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,888,745 |
| Landlocked Countries | 0 | - | 4.99 | 426,011 |
| World Capitals Quiz | 0 | - | 5.00 | 5,106,832 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,805,179 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,933 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,411 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,006 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,019 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,531 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,599,798 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,726 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,766 |
| Island Countries | 0 | - | 4.99 | 712,616 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,348 |
| Himalayan Countries | 0 | - | 4.93 | 140,310 |
| Andean Countries | 0 | - | 4.94 | 85,501 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,644 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,052 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,217 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,460 |
| Danube Countries | 0 | - | 4.97 | 72,418 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,614 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,855 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,156 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,640 |
| European Landlocked Countries | 0 | - | 4.99 | 147,621 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,325 |
| Countries with the Most Species | 0 | - | 4.99 | 103,574 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,429 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,781 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,892 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,849 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,588 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,028 |
| Countries in the Alps | 0 | - | 4.87 | 118,798 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,671 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,897 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,971 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,037 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,976 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,275 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,424 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,877 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,435 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,192 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,889 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,752 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,569 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,811 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,904 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,881 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,626 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 73,748 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,691 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,773 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,188 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,518 |
| Largest Countries By Category | 0 | - | 4.97 | 158,885 |
| Countries by Countries | 0 | - | 4.96 | 63,657 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,282 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,403 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,676 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,031 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,441 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,115 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,885 |
| Northernmost Countries | 0 | - | 4.99 | 364,076 |
| Countries of South America | 0 | - | 5.00 | 932,869 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,580 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,689 |
| "Land" Countries | 0 | - | 4.98 | 338,422 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,448 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,463 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,988 |
| Top World Languages | 0 | - | 4.92 | 829,931 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,808 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,619 |
| Rivers A-Z | 0 | - | 4.35 | 32,858 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,125 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,580 |
| Longest International Borders | 0 | - | 4.99 | 265,828 |
| Countries with Three Borders | 0 | - | 4.96 | 36,779 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,361 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,498 |
| Demonym of Every Country | 0 | - | 4.90 | 61,492 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,735 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,997 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,197 |
| Countries with Megacities | 0 | - | 4.99 | 267,188 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,880 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,153 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,194 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,262 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,323 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,372 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,980 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,218 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,244 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,162 |
| Countries by Capital City | 0 | - | 5.00 | 69,416 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,866 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,241 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,821 |
| Moved Capital Cities | 0 | - | 4.96 | 74,658 |
| Countries by Official Language | 0 | - | 4.95 | 196,021 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,665 |
| Countries in their Native Language | 0 | - | 4.99 | 199,754 |
| Independence from Whom | 0 | - | 4.99 | 213,102 |
| Subdivisions by Country | 0 | - | 4.87 | 50,620 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,460 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,965 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,546 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,696 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,232 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,277 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,860 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,129 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,573 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,071 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,261 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,563 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,384 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,449 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,154 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,589 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,877 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,057 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,394 |
| World Map Quiz | 0 | - | 4.81 | 65,750 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,331 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,720 |
| Countries by Founding Story | 0 | - | 4.95 | 77,810 |
| Countries by Road Signs | 0 | - | 4.98 | 54,357 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,286 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,102 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,573 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,616 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,446 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,550 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,752 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,703 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,749 |
| Widest Countries East to West | 0 | - | 4.92 | 130,481 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,602 |
