| World's Longest Rivers | 0 | - | 4.90 | 137,020 |
| Countries With No Rivers | 0 | - | 4.96 | 76,915 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,277 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,952 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,573 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,711 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,074 |
| North Sea Countries | 0 | - | 4.92 | 87,488 |
| Black Sea Countries | 0 | - | 4.87 | 60,650 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,454 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,547 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,276 |
| Seas on the World Map | 0 | - | 4.96 | 135,541 |
| Seas of the World | 0 | - | 5.00 | 157,390 |
| Famous Rivers | 0 | - | 4.75 | 105,064 |
| 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 | 40,389 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,896 |
| Countries with Fjords | 0 | - | 4.94 | 101,043 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,652 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,802 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,747 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,562 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,015 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,571 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,143 |
| Rivers by City | 0 | - | 4.38 | 31,741 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,105 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,037 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,313 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 29,046 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,737 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,478 |
| Biggest City by River | 0 | - | 4.38 | 52,884 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,380 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,772 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,603 |
| Megadiverse Countries | 0 | - | 4.96 | 135,016 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,298 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,029 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,541 |
| 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 | 96,912 |
| 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 | 28,652 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,025 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,729 |
| Boundary Waters | 0 | - | 4.92 | 88,577 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,254 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,280 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,730 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,615 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,588,847 |
| Landlocked Countries | 0 | - | 4.99 | 422,054 |
| World Capitals Quiz | 0 | - | 5.00 | 5,083,638 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,779,328 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,713 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,029 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,424 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,436 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,627 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,590,684 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,523 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,321 |
| Island Countries | 0 | - | 4.99 | 711,070 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,497 |
| Himalayan Countries | 0 | - | 4.94 | 138,765 |
| Andean Countries | 0 | - | 4.93 | 84,629 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,828 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,851 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,447 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,819 |
| Danube Countries | 0 | - | 4.97 | 72,021 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,021 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,429 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,330 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,805 |
| European Landlocked Countries | 0 | - | 4.99 | 147,151 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,661 |
| Countries with the Most Species | 0 | - | 4.99 | 103,247 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,778 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,598 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,726 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,545 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,236 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,667 |
| Countries in the Alps | 0 | - | 4.87 | 118,220 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,167 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,049 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,659 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,599 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,523 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,951 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,687 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,499 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,183 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,860 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,662 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,531 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,238 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,480 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,533 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,926 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,316 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,888 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,090 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,979 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,139 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,237 |
| Largest Countries By Category | 0 | - | 4.97 | 158,224 |
| Countries by Countries | 0 | - | 4.96 | 63,234 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,699 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,291 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,571 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,630 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,032 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,680 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,962 |
| Northernmost Countries | 0 | - | 4.99 | 361,995 |
| Countries of South America | 0 | - | 5.00 | 927,444 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,054 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,556 |
| "Land" Countries | 0 | - | 4.98 | 337,356 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,963 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,720 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,860 |
| Top World Languages | 0 | - | 4.92 | 824,362 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,509 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,500 |
| Rivers A-Z | 0 | - | 4.35 | 32,797 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,019 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,296 |
| Longest International Borders | 0 | - | 4.99 | 265,208 |
| Countries with Three Borders | 0 | - | 4.96 | 36,619 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,131 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,231 |
| Demonym of Every Country | 0 | - | 4.91 | 60,724 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,455 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,565 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,915 |
| Countries with Megacities | 0 | - | 4.99 | 264,601 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,752 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,475 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,015 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,549 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,514 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,537 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,548 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,680 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,486 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,311 |
| Countries by Capital City | 0 | - | 5.00 | 68,632 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,373 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,808 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,409 |
| Moved Capital Cities | 0 | - | 4.96 | 74,341 |
| Countries by Official Language | 0 | - | 4.95 | 195,268 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,392 |
| Countries in their Native Language | 0 | - | 4.99 | 199,054 |
| Independence from Whom | 0 | - | 4.99 | 212,117 |
| Subdivisions by Country | 0 | - | 4.86 | 50,432 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,744 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,107 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,364 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,238 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,109 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,148 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,602 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,479 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,033 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,662 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,148 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,681 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,886 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,207 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,968 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,354 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,499 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,845 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,201 |
| World Map Quiz | 0 | - | 4.81 | 65,099 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,323 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,355 |
| Countries by Founding Story | 0 | - | 4.95 | 77,381 |
| Countries by Road Signs | 0 | - | 4.98 | 54,017 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,107 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,282 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,002 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,211 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,899 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,019 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,307 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,442 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,581 |
| Widest Countries East to West | 0 | - | 4.92 | 129,655 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,460 |
