| World's Longest Rivers | 0 | - | 4.88 | 121,746 |
| Countries With No Rivers | 0 | - | 4.96 | 76,173 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,453 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,113 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,822 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,800 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,807 |
| North Sea Countries | 0 | - | 4.92 | 86,737 |
| Black Sea Countries | 0 | - | 4.87 | 60,402 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,116 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,204 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,013 |
| Seas on the World Map | 0 | - | 4.96 | 134,647 |
| Seas of the World | 0 | - | 5.00 | 155,251 |
| Famous Rivers | 0 | - | 4.74 | 104,665 |
| City to River #1 | 0 | - | 4.59 | 35,775 |
| Most Populous River Basins | 0 | - | 4.55 | 39,592 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,190 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,472 |
| Countries with Fjords | 0 | - | 4.93 | 100,409 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,971 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,391 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,420 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,289 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,758 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,094 |
| Biggest City by River | 0 | - | 4.41 | 52,741 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,859 |
| Rivers by City | 0 | - | 4.38 | 31,666 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,875 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,956 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 162,598 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,443 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,141 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,209 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,785 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,560 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,393 |
| Megadiverse Countries | 0 | - | 4.96 | 134,499 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,100 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,947 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,376 |
| Geologic Time Scale | 0 | - | 4.46 | 9,961 |
| Rivers on Borders | 0 | - | 4.02 | 22,658 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,062 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,755 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,193 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,172 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,512 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,992 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,397 |
| Boundary Waters | 0 | - | 4.92 | 88,187 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,932 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,583 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,721 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,060 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,116,967 |
| Landlocked Countries | 0 | - | 4.99 | 416,037 |
| World Capitals Quiz | 0 | - | 5.00 | 5,046,873 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,736,484 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,322 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,267 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,205 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,462 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,399 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,576,437 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,543 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,278 |
| Island Countries | 0 | - | 4.99 | 708,610 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,632 |
| Himalayan Countries | 0 | - | 4.95 | 136,244 |
| Andean Countries | 0 | - | 4.95 | 83,328 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,606 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,818 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,307 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,926 |
| Danube Countries | 0 | - | 4.97 | 71,334 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,116 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,791 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,023 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,975 |
| European Landlocked Countries | 0 | - | 4.99 | 146,052 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,660 |
| Countries with the Most Species | 0 | - | 4.99 | 97,746 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,806 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,300 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,478 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,115 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,762 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,133 |
| Countries in the Alps | 0 | - | 4.86 | 117,253 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,841 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,755 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,212 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,666 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,561 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,204 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,913 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,953 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,754 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,286 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,323 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,182 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,676 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,938 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,945 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,609 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,853 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,388 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,132 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,683 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,426 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,780 |
| Largest Countries By Category | 0 | - | 4.97 | 157,177 |
| Countries by Countries | 0 | - | 4.96 | 62,531 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,791 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,062 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,399 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,354 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,035 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,659 |
| Northernmost Countries | 0 | - | 4.99 | 359,075 |
| Countries of South America | 0 | - | 5.00 | 918,848 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,650 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,643 |
| "Land" Countries | 0 | - | 4.98 | 334,284 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,067 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,977 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,606 |
| Top World Languages | 0 | - | 4.92 | 816,466 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,820 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,309 |
| Rivers A-Z | 0 | - | 4.35 | 32,732 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,080 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,814 |
| Longest International Borders | 0 | - | 4.99 | 264,227 |
| Countries with Three Borders | 0 | - | 4.96 | 36,318 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,750 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,834 |
| Demonym of Every Country | 0 | - | 4.91 | 58,861 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,252 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,802 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,126 |
| Countries with Megacities | 0 | - | 4.99 | 248,631 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,992 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,463 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,371 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,415 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,357 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,476 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,988 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,966 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,194 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,043 |
| Countries by Capital City | 0 | - | 5.00 | 67,324 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,653 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,189 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,627 |
| Moved Capital Cities | 0 | - | 4.96 | 73,826 |
| Countries by Official Language | 0 | - | 4.95 | 193,797 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,286 |
| Countries in their Native Language | 0 | - | 4.99 | 197,441 |
| Independence from Whom | 0 | - | 4.99 | 210,406 |
| Subdivisions by Country | 0 | - | 4.86 | 50,171 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,221 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,654 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,056 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,595 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,936 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,114 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,176 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,477 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,503 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,334 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,073 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,555 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,653 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,624 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,828 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,166 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,946 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,363 |
| World Map Quiz | 0 | - | 4.81 | 63,943 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,051 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,649 |
| Countries by Founding Story | 0 | - | 4.95 | 76,817 |
| Countries by Road Signs | 0 | - | 4.98 | 53,347 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,952 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,607 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,328 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,544 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,195 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,394 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,573 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,113 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,598 |
| Widest Countries East to West | 0 | - | 4.92 | 129,095 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,308 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,577 |
