| World's Longest Rivers | 0 | - | 4.89 | 137,706 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,700 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,186 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,210 |
| North Sea Countries | 0 | - | 4.92 | 87,749 |
| Black Sea Countries | 0 | - | 4.87 | 60,778 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,636 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,728 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,407 |
| Seas on the World Map | 0 | - | 4.96 | 136,045 |
| Seas of the World | 0 | - | 5.00 | 158,667 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,195 |
| Countries with Fjords | 0 | - | 4.94 | 101,504 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,924 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,726 |
| Seas that Touch the Most Countries | 0 | - | 4.64 | 97,149 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,963 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,682 |
| Famous Rivers | 0 | - | 4.75 | 105,284 |
| City to River #1 | 0 | - | 4.59 | 35,909 |
| Most Populous River Basins | 0 | - | 4.55 | 39,823 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,503 |
| Countries With No Rivers | 0 | - | 4.96 | 77,220 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,089 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,901 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,318 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,295 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,734 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,399 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,933 |
| Megadiverse Countries | 0 | - | 4.96 | 146,550 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,046 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,045 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,428 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,082 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,173 |
| Rivers by City | 0 | - | 4.38 | 31,782 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,248 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,096 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,857 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,676 |
| Geologic Time Scale | 0 | - | 4.41 | 10,072 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,292 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,855 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,411 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 414,283 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,757 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,035 |
| Boundary Waters | 0 | - | 4.92 | 88,807 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,433 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,770 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,441 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,018 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,929,714 |
| Biggest City by River | 0 | - | 4.38 | 52,972 |
| Landlocked Countries | 0 | - | 4.99 | 426,719 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,963 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,463 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,080 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,116 |
| World Capitals Quiz | 0 | - | 5.00 | 5,110,364 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,646 |
| Himalayan Countries | 0 | - | 4.93 | 140,578 |
| Andean Countries | 0 | - | 4.94 | 85,669 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,803 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,296 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,357 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,583 |
| Danube Countries | 0 | - | 4.97 | 72,494 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,714 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,914 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,316 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,763 |
| European Landlocked Countries | 0 | - | 4.99 | 147,685 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,427 |
| Countries with the Most Species | 0 | - | 4.99 | 103,611 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,545 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,795 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,924 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,889 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,631 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,084 |
| Countries in the Alps | 0 | - | 4.87 | 118,882 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,841 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,026 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,023 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,113 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,056 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,338 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,488 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,938 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,480 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,262 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,927 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,799 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,624 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,865 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,966 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,038 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,673 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,834 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,768 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,014 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,339 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,572 |
| Largest Countries By Category | 0 | - | 4.97 | 158,976 |
| Countries by Countries | 0 | - | 4.97 | 63,730 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,355 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,430 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,691 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,230 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,489 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,174 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,808,717 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,537 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,014 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,848 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,638 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,273 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,617 |
| Longest International Borders | 0 | - | 4.99 | 265,909 |
| Countries with Three Borders | 0 | - | 4.96 | 36,807 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,393 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,536 |
| Demonym of Every Country | 0 | - | 4.90 | 61,567 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,102 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,601,053 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,895 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,064 |
| Island Countries | 0 | - | 4.99 | 712,800 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,521 |
| Northernmost Countries | 0 | - | 4.99 | 364,339 |
| Countries of South America | 0 | - | 5.00 | 933,561 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,560 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,318 |
| "Land" Countries | 0 | - | 4.98 | 338,668 |
| Top World Languages | 0 | - | 4.92 | 830,636 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,577 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,719 |
| All Country Flags of the World | 0 | - | 5.00 | 3,719,786 |
| Rivers on Borders | 0 | - | 4.02 | 22,743 |
| Rivers A-Z | 0 | - | 4.35 | 32,866 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,756 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,401 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,056 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 48,048 |
| "Second Best" Geography Edition #1 | 0 | - | 4.56 | 63,714 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,182 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,762 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,363 |
| Countries with Megacities | 0 | - | 4.99 | 267,533 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,019 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,252 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,347 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,352 |
| Biggest Cities in the World | 0 | - | 4.91 | 806,372 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,425 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,469 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,034 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,282 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,341 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,267 |
| Countries by Capital City | 0 | - | 5.00 | 69,528 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,002 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,291 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,182 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,892 |
| Moved Capital Cities | 0 | - | 4.96 | 74,697 |
| Countries by Official Language | 0 | - | 4.95 | 196,135 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,805 |
| Countries in their Native Language | 0 | - | 4.99 | 199,857 |
| Independence from Whom | 0 | - | 4.99 | 213,261 |
| Subdivisions by Country | 0 | - | 4.87 | 50,644 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,574 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,052 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,560 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,760 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,241 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,371 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,895 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,201 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,600 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,130 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,278 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,668 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,446 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,474 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,189 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,610 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,928 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,563 |
| World Map Quiz | 0 | - | 4.81 | 65,860 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,604 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,768 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,675 |
| Countries by Founding Story | 0 | - | 4.95 | 77,869 |
| Countries by Road Signs | 0 | - | 4.98 | 54,401 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,402 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,166 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,637 |
