| World's Longest Rivers | 0 | - | 4.90 | 137,005 |
| Countries With No Rivers | 0 | - | 4.96 | 76,903 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,269 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,944 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,564 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,695 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,069 |
| North Sea Countries | 0 | - | 4.92 | 87,479 |
| Black Sea Countries | 0 | - | 4.87 | 60,648 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,447 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,546 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,274 |
| Seas on the World Map | 0 | - | 4.96 | 135,534 |
| Seas of the World | 0 | - | 5.00 | 157,361 |
| Famous Rivers | 0 | - | 4.75 | 105,059 |
| City to River #1 | 0 | - | 4.59 | 35,862 |
| Most Populous River Basins | 0 | - | 4.55 | 39,743 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,385 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,893 |
| Countries with Fjords | 0 | - | 4.94 | 101,032 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,640 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,798 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,743 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,557 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,013 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,560 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,138 |
| Rivers by City | 0 | - | 4.38 | 31,739 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,102 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,037 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,286 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 29,033 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,731 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,476 |
| Biggest City by River | 0 | - | 4.38 | 52,883 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,355 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,771 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,599 |
| Megadiverse Countries | 0 | - | 4.96 | 135,007 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,296 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,029 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,539 |
| Geologic Time Scale | 0 | - | 4.41 | 10,036 |
| Rivers on Borders | 0 | - | 4.02 | 22,709 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,904 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,818 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,258 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,256 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,651 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,025 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,725 |
| Boundary Waters | 0 | - | 4.92 | 88,567 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,247 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,261 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,700 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,597 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,579,247 |
| Landlocked Countries | 0 | - | 4.99 | 421,925 |
| World Capitals Quiz | 0 | - | 5.00 | 5,082,978 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,306 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,703 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,014 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,408 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,415 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,542 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,590,356 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,488 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,192 |
| Island Countries | 0 | - | 4.99 | 711,035 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,415 |
| Himalayan Countries | 0 | - | 4.94 | 138,693 |
| Andean Countries | 0 | - | 4.93 | 84,593 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,789 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,798 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,413 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,798 |
| Danube Countries | 0 | - | 4.97 | 72,002 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,010 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,420 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,294 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,774 |
| European Landlocked Countries | 0 | - | 4.99 | 147,139 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,630 |
| Countries with the Most Species | 0 | - | 4.99 | 103,243 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,756 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,590 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,721 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,539 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,223 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,657 |
| Countries in the Alps | 0 | - | 4.87 | 118,198 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,092 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,027 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,639 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,594 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,505 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,945 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,669 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,487 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,176 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,841 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,650 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,521 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,219 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,464 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,517 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,895 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,306 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,734 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,067 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,914 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,088 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,225 |
| Largest Countries By Category | 0 | - | 4.97 | 158,202 |
| Countries by Countries | 0 | - | 4.96 | 63,219 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,678 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,284 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,565 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,571 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,016 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,673 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,804 |
| Northernmost Countries | 0 | - | 4.99 | 361,943 |
| Countries of South America | 0 | - | 5.00 | 927,279 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,771 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,137 |
| "Land" Countries | 0 | - | 4.98 | 337,323 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,950 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,704 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,859 |
| Top World Languages | 0 | - | 4.92 | 824,165 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,500 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,498 |
| Rivers A-Z | 0 | - | 4.35 | 32,796 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,989 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,285 |
| Longest International Borders | 0 | - | 4.99 | 265,195 |
| Countries with Three Borders | 0 | - | 4.96 | 36,612 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,124 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,222 |
| Demonym of Every Country | 0 | - | 4.91 | 60,698 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,448 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,551 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,876 |
| Countries with Megacities | 0 | - | 4.99 | 264,518 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,730 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,461 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,985 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,535 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,448 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,519 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,536 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,664 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,470 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,284 |
| Countries by Capital City | 0 | - | 5.00 | 68,607 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,358 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,797 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,390 |
| Moved Capital Cities | 0 | - | 4.96 | 74,331 |
| Countries by Official Language | 0 | - | 4.95 | 195,238 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,364 |
| Countries in their Native Language | 0 | - | 4.99 | 199,034 |
| Independence from Whom | 0 | - | 4.99 | 212,082 |
| Subdivisions by Country | 0 | - | 4.86 | 50,430 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,720 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,079 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,346 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,233 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,097 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,133 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,594 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,463 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,030 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,653 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,145 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,661 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,877 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,199 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,961 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,344 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,494 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,582 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,168 |
| World Map Quiz | 0 | - | 4.81 | 65,078 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,262 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,344 |
| Countries by Founding Story | 0 | - | 4.95 | 77,362 |
| Countries by Road Signs | 0 | - | 4.98 | 54,005 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,085 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,273 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,992 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,176 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,881 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,004 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,296 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,435 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,568 |
| Widest Countries East to West | 0 | - | 4.92 | 129,638 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,454 |
