| World's Longest Rivers | 0 | - | 4.89 | 137,745 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,776 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,214 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,216 |
| North Sea Countries | 0 | - | 4.92 | 87,765 |
| Black Sea Countries | 0 | - | 4.87 | 60,783 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,650 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,735 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,414 |
| Seas on the World Map | 0 | - | 4.96 | 136,084 |
| Seas of the World | 0 | - | 5.00 | 158,750 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,220 |
| Countries with Fjords | 0 | - | 4.94 | 101,545 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,935 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,740 |
| Seas that Touch the Most Countries | 0 | - | 4.64 | 97,164 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,972 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,692 |
| Famous Rivers | 0 | - | 4.75 | 105,303 |
| City to River #1 | 0 | - | 4.59 | 35,915 |
| Most Populous River Basins | 0 | - | 4.55 | 39,830 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,509 |
| Countries With No Rivers | 0 | - | 4.96 | 77,239 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,115 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 414,334 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,911 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,322 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,296 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,739 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,434 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,977 |
| Megadiverse Countries | 0 | - | 4.96 | 148,151 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,070 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,056 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,435 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,083 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,183 |
| Rivers by City | 0 | - | 4.38 | 31,783 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,256 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,099 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,871 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,688 |
| Geologic Time Scale | 0 | - | 4.41 | 10,082 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,307 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,858 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,437 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,764 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,037 |
| Boundary Waters | 0 | - | 4.92 | 88,822 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,450 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,800 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,505 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,041 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,949,203 |
| Biggest City by River | 0 | - | 4.38 | 52,979 |
| Landlocked Countries | 0 | - | 4.99 | 426,992 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,974 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,488 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,116 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,151 |
| World Capitals Quiz | 0 | - | 5.00 | 5,112,015 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,795 |
| Himalayan Countries | 0 | - | 4.93 | 140,715 |
| Andean Countries | 0 | - | 4.94 | 85,743 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,869 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,412 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,425 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,646 |
| Danube Countries | 0 | - | 4.97 | 72,521 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,746 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,944 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,386 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,841 |
| European Landlocked Countries | 0 | - | 4.99 | 147,711 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,488 |
| Countries with the Most Species | 0 | - | 4.99 | 103,628 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,594 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,804 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,939 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,904 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,660 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,109 |
| Countries in the Alps | 0 | - | 4.87 | 118,930 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,924 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,071 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,044 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,145 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,094 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,363 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,547 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,973 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,498 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,291 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,941 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,818 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,655 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,904 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,999 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,092 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,703 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,217 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,809 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,184 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,421 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,597 |
| Largest Countries By Category | 0 | - | 4.97 | 159,040 |
| Countries by Countries | 0 | - | 4.97 | 63,786 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,394 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,440 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,701 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,332 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,518 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,199 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,529 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,559 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,020 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,864 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,652 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,337 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,636 |
| Longest International Borders | 0 | - | 4.99 | 265,949 |
| Countries with Three Borders | 0 | - | 4.96 | 36,817 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,408 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,551 |
| Demonym of Every Country | 0 | - | 4.90 | 61,598 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,348 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,601,628 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,980 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,199 |
| Island Countries | 0 | - | 4.99 | 712,904 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,845 |
| Northernmost Countries | 0 | - | 4.99 | 364,473 |
| Countries of South America | 0 | - | 5.00 | 933,923 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,977 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,139 |
| "Land" Countries | 0 | - | 4.98 | 338,891 |
| Top World Languages | 0 | - | 4.92 | 830,940 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,249 |
| Europe Map Quiz | 0 | - | 5.00 | 4,791,825 |
| All Country Flags of the World | 0 | - | 5.00 | 3,722,170 |
| Rivers on Borders | 0 | - | 4.02 | 22,747 |
| Rivers A-Z | 0 | - | 4.35 | 32,870 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,767 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,404 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,095 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 48,058 |
| "Second Best" Geography Edition #1 | 0 | - | 4.56 | 63,730 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,621 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,863 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,429 |
| Countries with Megacities | 0 | - | 4.99 | 267,690 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,076 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,290 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,418 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,405 |
| Biggest Cities in the World | 0 | - | 4.91 | 806,689 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,466 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,511 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,059 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,307 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,391 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,322 |
| Countries by Capital City | 0 | - | 5.00 | 69,565 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,095 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,324 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,285 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,924 |
| Moved Capital Cities | 0 | - | 4.96 | 74,712 |
| Countries by Official Language | 0 | - | 4.95 | 196,168 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,872 |
| Countries in their Native Language | 0 | - | 4.99 | 199,915 |
| Independence from Whom | 0 | - | 4.99 | 213,340 |
| Subdivisions by Country | 0 | - | 4.87 | 50,653 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,618 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,093 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,569 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,784 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,248 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,427 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,911 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,245 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,608 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,146 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,712 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,466 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,491 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,201 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,621 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,949 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,650 |
| World Map Quiz | 0 | - | 4.81 | 65,888 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,748 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,782 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,701 |
| Countries by Founding Story | 0 | - | 4.95 | 77,893 |
| Countries by Road Signs | 0 | - | 4.98 | 54,427 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,448 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,202 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,673 |
