| World's Longest Rivers | 0 | - | 4.89 | 137,683 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,647 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,165 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,197 |
| North Sea Countries | 0 | - | 4.92 | 87,736 |
| Black Sea Countries | 0 | - | 4.87 | 60,772 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,621 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,718 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,399 |
| Seas on the World Map | 0 | - | 4.96 | 136,023 |
| Seas of the World | 0 | - | 5.00 | 158,613 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,155 |
| Countries with Fjords | 0 | - | 4.94 | 101,464 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,921 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,722 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,137 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,948 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,678 |
| Famous Rivers | 0 | - | 4.75 | 105,273 |
| City to River #1 | 0 | - | 4.59 | 35,907 |
| Most Populous River Basins | 0 | - | 4.55 | 39,821 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,498 |
| Countries With No Rivers | 0 | - | 4.96 | 77,198 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,070 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,895 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,318 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,291 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,733 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,372 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,918 |
| Megadiverse Countries | 0 | - | 4.96 | 143,327 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,027 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,033 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,421 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,080 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,170 |
| Rivers by City | 0 | - | 4.38 | 31,781 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,244 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,094 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,846 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,664 |
| Geologic Time Scale | 0 | - | 4.41 | 10,071 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,281 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,854 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,393 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,234 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,748 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,035 |
| Boundary Waters | 0 | - | 4.92 | 88,794 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,430 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,754 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,407 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,005 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,916,704 |
| Biggest City by River | 0 | - | 4.38 | 52,968 |
| Landlocked Countries | 0 | - | 4.99 | 426,484 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,950 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,445 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,055 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,085 |
| World Capitals Quiz | 0 | - | 5.00 | 5,109,273 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,524 |
| Himalayan Countries | 0 | - | 4.93 | 140,458 |
| Andean Countries | 0 | - | 4.94 | 85,601 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,738 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,197 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,305 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,541 |
| Danube Countries | 0 | - | 4.97 | 72,465 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,674 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,896 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,250 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,724 |
| European Landlocked Countries | 0 | - | 4.99 | 147,664 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,391 |
| Countries with the Most Species | 0 | - | 4.99 | 103,602 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,499 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,790 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,910 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,875 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,612 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,065 |
| Countries in the Alps | 0 | - | 4.87 | 118,850 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,781 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,982 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,009 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,085 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,030 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,316 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,469 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,913 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,462 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,225 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,909 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,779 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,601 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,843 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,944 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,971 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,654 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,429 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,736 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,931 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,285 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,549 |
| Largest Countries By Category | 0 | - | 4.97 | 158,945 |
| Countries by Countries | 0 | - | 4.96 | 63,703 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,323 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,424 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,688 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,147 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,468 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,146 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,807,556 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,515 |
| Western Europe Map Quiz | 0 | - | 4.85 | 94,008 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,836 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,628 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,225 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,599 |
| Longest International Borders | 0 | - | 4.99 | 265,888 |
| Countries with Three Borders | 0 | - | 4.96 | 36,798 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,382 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,521 |
| Demonym of Every Country | 0 | - | 4.90 | 61,541 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,939 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,600,647 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,829 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,969 |
| Island Countries | 0 | - | 4.99 | 712,738 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,297 |
| Northernmost Countries | 0 | - | 4.99 | 364,259 |
| Countries of South America | 0 | - | 5.00 | 933,336 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,314 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,841 |
| "Land" Countries | 0 | - | 4.98 | 338,528 |
| Top World Languages | 0 | - | 4.92 | 830,429 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,124 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,007 |
| All Country Flags of the World | 0 | - | 5.00 | 3,718,095 |
| Rivers on Borders | 0 | - | 4.02 | 22,742 |
| Rivers A-Z | 0 | - | 4.35 | 32,863 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,749 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,399 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,037 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 48,040 |
| "Second Best" Geography Edition #1 | 0 | - | 4.56 | 63,704 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,895 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,688 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,305 |
| Countries with Megacities | 0 | - | 4.99 | 267,416 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,975 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,224 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,301 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,325 |
| Biggest Cities in the World | 0 | - | 4.91 | 806,172 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,387 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,442 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,020 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,262 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,308 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,236 |
| Countries by Capital City | 0 | - | 5.00 | 69,491 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,917 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,275 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,087 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,871 |
| Moved Capital Cities | 0 | - | 4.96 | 74,689 |
| Countries by Official Language | 0 | - | 4.95 | 196,102 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,767 |
| Countries in their Native Language | 0 | - | 4.99 | 199,832 |
| Independence from Whom | 0 | - | 4.99 | 213,206 |
| Subdivisions by Country | 0 | - | 4.87 | 50,640 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,554 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,024 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,553 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,744 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,236 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,343 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,884 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,177 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,590 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,116 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,274 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,629 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,428 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,462 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,171 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,602 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,912 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,514 |
| World Map Quiz | 0 | - | 4.81 | 65,813 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,517 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,756 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,649 |
| Countries by Founding Story | 0 | - | 4.95 | 77,851 |
| Countries by Road Signs | 0 | - | 4.98 | 54,390 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,369 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,149 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,613 |
