| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,811 |
| North Sea Countries | 0 | - | 4.92 | 86,742 |
| Black Sea Countries | 0 | - | 4.87 | 60,404 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,122 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,212 |
| Seas on the World Map | 0 | - | 4.96 | 134,662 |
| Seas of the World | 0 | - | 5.00 | 155,289 |
| World's Longest Rivers | 0 | - | 4.88 | 121,761 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 162,634 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,817 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,014 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,476 |
| Countries with Fjords | 0 | - | 4.93 | 100,418 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,428 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,293 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,144 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,222 |
| Famous Rivers | 0 | - | 4.74 | 104,668 |
| City to River #1 | 0 | - | 4.59 | 35,776 |
| Most Populous River Basins | 0 | - | 4.55 | 39,593 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,197 |
| Countries With No Rivers | 0 | - | 4.96 | 76,181 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,462 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,193 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,177 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,514 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,128 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,835 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,566 |
| Megadiverse Countries | 0 | - | 4.96 | 134,510 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,982 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,394 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,764 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,105 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,103 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,950 |
| Rivers by City | 0 | - | 4.38 | 31,666 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,881 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,957 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,377 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,860 |
| Geologic Time Scale | 0 | - | 4.46 | 9,964 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,453 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,755 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,805 |
| Biggest City by River | 0 | - | 4.41 | 52,743 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,396 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,993 |
| Boundary Waters | 0 | - | 4.92 | 88,201 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,939 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,608 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,750 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,082 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,129,610 |
| Landlocked Countries | 0 | - | 4.99 | 416,220 |
| World Capitals Quiz | 0 | - | 5.00 | 5,047,698 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,603 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,341 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,290 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,226 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,487 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,498 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,576,834 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,634 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,453 |
| Island Countries | 0 | - | 4.99 | 708,669 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,721 |
| Himalayan Countries | 0 | - | 4.95 | 136,325 |
| Andean Countries | 0 | - | 4.95 | 83,385 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,648 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,876 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,345 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,948 |
| Danube Countries | 0 | - | 4.97 | 71,352 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,145 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,811 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,068 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,019 |
| European Landlocked Countries | 0 | - | 4.99 | 146,076 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,691 |
| Countries with the Most Species | 0 | - | 4.99 | 99,665 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,839 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,310 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,486 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,127 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,779 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,151 |
| Countries in the Alps | 0 | - | 4.86 | 117,277 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,865 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,796 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,226 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,688 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,730 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,216 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,940 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,965 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,765 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,297 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,337 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,188 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,687 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,959 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,969 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,629 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,865 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,399 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,151 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,758 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,462 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,789 |
| Largest Countries By Category | 0 | - | 4.97 | 157,200 |
| Countries by Countries | 0 | - | 4.96 | 62,554 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,815 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,067 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,403 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,363 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,044 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,834 |
| Northernmost Countries | 0 | - | 4.99 | 359,147 |
| Countries of South America | 0 | - | 5.00 | 919,085 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,914 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,247 |
| "Land" Countries | 0 | - | 4.98 | 334,315 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,986 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,612 |
| Top World Languages | 0 | - | 4.92 | 816,711 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,858 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,313 |
| Rivers on Borders | 0 | - | 4.02 | 22,658 |
| Rivers A-Z | 0 | - | 4.35 | 32,734 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,127 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,824 |
| Longest International Borders | 0 | - | 4.99 | 264,246 |
| Countries with Three Borders | 0 | - | 4.96 | 36,328 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,761 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,842 |
| Demonym of Every Country | 0 | - | 4.91 | 58,879 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,253 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,814 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,163 |
| Countries with Megacities | 0 | - | 4.99 | 248,703 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,026 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,481 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,393 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,430 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,388 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,508 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,007 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,998 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,232 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,077 |
| Countries by Capital City | 0 | - | 5.00 | 67,371 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,680 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,202 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,646 |
| Moved Capital Cities | 0 | - | 4.96 | 73,845 |
| Countries by Official Language | 0 | - | 4.95 | 193,874 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,348 |
| Countries in their Native Language | 0 | - | 4.99 | 197,515 |
| Independence from Whom | 0 | - | 4.99 | 210,434 |
| Subdivisions by Country | 0 | - | 4.86 | 50,176 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,252 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,709 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,061 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,610 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,939 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,375 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,185 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,502 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,514 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,349 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,797 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,102 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,560 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,659 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,628 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,832 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,181 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,393 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,407 |
| World Map Quiz | 0 | - | 4.81 | 63,985 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,144 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,661 |
| Countries by Founding Story | 0 | - | 4.95 | 76,826 |
| Countries by Road Signs | 0 | - | 4.98 | 53,364 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,982 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,620 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,343 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,594 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,222 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,411 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,590 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,125 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,610 |
| Widest Countries East to West | 0 | - | 4.92 | 129,105 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,318 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,599 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,883 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,926 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,941 |
