| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,075 |
| North Sea Countries | 0 | - | 4.92 | 87,496 |
| Black Sea Countries | 0 | - | 4.87 | 60,652 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,454 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,549 |
| Seas on the World Map | 0 | - | 4.96 | 135,551 |
| Seas of the World | 0 | - | 5.00 | 157,427 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,022 |
| World's Longest Rivers | 0 | - | 4.90 | 137,049 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,144 |
| Countries With No Rivers | 0 | - | 4.96 | 76,922 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,281 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,289 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,958 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,582 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,720 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,657 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,810 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,741 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,490 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,578 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,609 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,902 |
| Countries with Fjords | 0 | - | 4.94 | 101,052 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,750 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,570 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,030 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,353 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 29,054 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,401 |
| Famous Rivers | 0 | - | 4.75 | 105,067 |
| City to River #1 | 0 | - | 4.59 | 35,864 |
| Most Populous River Basins | 0 | - | 4.55 | 39,748 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,390 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,774 |
| Megadiverse Countries | 0 | - | 4.96 | 135,028 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,300 |
| Rivers by City | 0 | - | 4.38 | 31,741 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,112 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,040 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,543 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,976 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,914 |
| Biggest City by River | 0 | - | 4.38 | 52,885 |
| Geologic Time Scale | 0 | - | 4.41 | 10,036 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,819 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,258 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,257 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,655 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,734 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,025 |
| Rivers on Borders | 0 | - | 4.02 | 22,710 |
| Boundary Waters | 0 | - | 4.92 | 88,581 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,261 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,286 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,756 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,624 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,597,038 |
| Seas of Europe | 0 | - | 4.37 | 84,723 |
| World Capitals Quiz | 0 | - | 5.00 | 5,084,232 |
| Landlocked Countries | 0 | - | 4.99 | 422,150 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 577,342 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,780,077 |
| Rivers A-Z | 0 | - | 4.35 | 32,801 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,719 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,038 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,437 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,447 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,715 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,590,947 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,554 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,437 |
| Island Countries | 0 | - | 4.99 | 711,109 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,565 |
| Himalayan Countries | 0 | - | 4.94 | 138,827 |
| Andean Countries | 0 | - | 4.93 | 84,661 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,863 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,901 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,492 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,839 |
| Danube Countries | 0 | - | 4.97 | 72,036 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,044 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,444 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,351 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,833 |
| European Landlocked Countries | 0 | - | 4.99 | 147,165 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,680 |
| Countries with the Most Species | 0 | - | 4.99 | 103,264 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,795 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,603 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,729 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,556 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,247 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,685 |
| Countries in the Alps | 0 | - | 4.87 | 118,234 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,225 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,065 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,674 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,615 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,542 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,961 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,696 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,514 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,192 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,868 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,667 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,537 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,242 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,493 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,544 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,954 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,332 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,010 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,118 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,038 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,178 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,249 |
| Largest Countries By Category | 0 | - | 4.97 | 158,248 |
| Countries by Countries | 0 | - | 4.96 | 63,253 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,138 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,711 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,297 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,571 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,670 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,045 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,690 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,108 |
| Northernmost Countries | 0 | - | 4.99 | 362,041 |
| Countries of South America | 0 | - | 5.00 | 927,609 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,307 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,895 |
| "Land" Countries | 0 | - | 4.98 | 337,394 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,344 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,729 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,863 |
| All Country Flags of the World | 0 | - | 5.00 | 3,680,578 |
| Top World Languages | 0 | - | 4.92 | 824,518 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,520 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,501 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,120 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,038 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,302 |
| Longest International Borders | 0 | - | 4.99 | 265,225 |
| Countries with Three Borders | 0 | - | 4.96 | 36,623 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,134 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,235 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 37,078 |
| Demonym of Every Country | 0 | - | 4.91 | 60,743 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,460 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,570 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,463 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,036 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,943 |
| Countries with Megacities | 0 | - | 4.99 | 264,656 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,774 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,495 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,038 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,565 |
| Biggest Cities in the World | 0 | - | 4.91 | 801,023 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,576 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,554 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,560 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,697 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,509 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,334 |
| Countries by Capital City | 0 | - | 5.00 | 68,651 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,383 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,826 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,158 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,421 |
| Moved Capital Cities | 0 | - | 4.96 | 74,353 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,642 |
| Countries by Official Language | 0 | - | 4.95 | 195,286 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,420 |
| Countries in their Native Language | 0 | - | 4.99 | 199,078 |
| Independence from Whom | 0 | - | 4.99 | 212,147 |
| Subdivisions by Country | 0 | - | 4.86 | 50,437 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,762 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,123 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,368 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,245 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,112 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,161 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,605 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,499 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,044 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,669 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,152 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,701 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,895 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,217 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,975 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,362 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,503 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,238 |
| World Map Quiz | 0 | - | 4.81 | 65,117 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,375 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,367 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,145 |
| Countries by Founding Story | 0 | - | 4.95 | 77,389 |
