| World's Longest Rivers | 0 | - | 4.89 | 135,905 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,303 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,243 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,972 |
| North Sea Countries | 0 | - | 4.92 | 87,294 |
| Black Sea Countries | 0 | - | 4.87 | 60,571 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,304 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,402 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,172 |
| Seas on the World Map | 0 | - | 4.96 | 135,108 |
| Seas of the World | 0 | - | 5.00 | 156,304 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,746 |
| Countries with Fjords | 0 | - | 4.94 | 100,758 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,594 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,402 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,678 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,315 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,327 |
| Famous Rivers | 0 | - | 4.75 | 104,867 |
| City to River #1 | 0 | - | 4.59 | 35,826 |
| Most Populous River Basins | 0 | - | 4.55 | 39,675 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,308 |
| Countries With No Rivers | 0 | - | 4.96 | 76,691 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,952 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,655 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,209 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,583 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,608 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,239 |
| Megadiverse Countries | 0 | - | 4.96 | 134,746 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,336 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,615 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,191 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,989 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,888 |
| Rivers by City | 0 | - | 4.38 | 31,698 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,986 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,004 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,321 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,479 |
| Geologic Time Scale | 0 | - | 4.46 | 10,002 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,029 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,786 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,714 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,358 |
| Biggest City by River | 0 | - | 4.41 | 52,818 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,488 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,006 |
| Boundary Waters | 0 | - | 4.92 | 88,364 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,063 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,887 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,133 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,308 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,313,515 |
| Landlocked Countries | 0 | - | 4.99 | 418,591 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,484 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,598 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,630 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,851 |
| World Capitals Quiz | 0 | - | 5.00 | 5,062,068 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,808 |
| Himalayan Countries | 0 | - | 4.94 | 137,267 |
| Andean Countries | 0 | - | 4.95 | 83,847 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,123 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,519 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,777 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,299 |
| Danube Countries | 0 | - | 4.97 | 71,615 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,497 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,017 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,581 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,651 |
| European Landlocked Countries | 0 | - | 4.99 | 146,732 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,079 |
| Countries with the Most Species | 0 | - | 4.99 | 102,868 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,214 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,422 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,575 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,280 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,960 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,334 |
| Countries in the Alps | 0 | - | 4.87 | 117,632 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,096 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,307 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,387 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,950 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,053 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,422 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,237 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,153 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,945 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,521 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,457 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,320 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,897 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,166 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,181 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,125 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,039 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,554 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,476 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,229 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,145 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,971 |
| Largest Countries By Category | 0 | - | 4.97 | 157,580 |
| Countries by Countries | 0 | - | 4.96 | 62,807 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,159 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,148 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,464 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,410 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,620 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,294 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,938 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,346 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,721 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,197 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,384 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,007 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,052 |
| Longest International Borders | 0 | - | 4.99 | 264,609 |
| Countries with Three Borders | 0 | - | 4.96 | 36,440 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,900 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,992 |
| Demonym of Every Country | 0 | - | 4.91 | 59,120 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,714 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,582,333 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,507 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,940 |
| Island Countries | 0 | - | 4.99 | 709,613 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,728 |
| Northernmost Countries | 0 | - | 4.99 | 360,339 |
| Countries of South America | 0 | - | 5.00 | 922,531 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,510 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,490 |
| "Land" Countries | 0 | - | 4.98 | 335,722 |
| Top World Languages | 0 | - | 4.92 | 819,893 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,031 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,993 |
| All Country Flags of the World | 0 | - | 5.00 | 3,647,244 |
| Rivers on Borders | 0 | - | 4.02 | 22,684 |
| Rivers A-Z | 0 | - | 4.35 | 32,762 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,331 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,279 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,126 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 47,652 |
| "Second Best" Geography Edition #1 | 0 | - | 4.61 | 63,332 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,878 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,612 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,924 |
| Countries with Megacities | 0 | - | 4.99 | 257,437 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,782 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,929 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,072 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,933 |
| Biggest Cities in the World | 0 | - | 4.91 | 796,404 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,822 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,911 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,221 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,249 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,927 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,569 |
| Countries by Capital City | 0 | - | 5.00 | 67,882 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,949 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,444 |
| World Capitals by Proximity | 0 | - | 4.91 | 330,562 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,934 |
| Moved Capital Cities | 0 | - | 4.96 | 74,032 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,383 |
| Countries by Official Language | 0 | - | 4.95 | 194,585 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,464 |
| Countries in their Native Language | 0 | - | 4.99 | 198,130 |
| Independence from Whom | 0 | - | 4.99 | 211,241 |
| Subdivisions by Country | 0 | - | 4.86 | 50,273 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,646 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,508 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,164 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,733 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,673 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,360 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,925 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,824 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,467 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,975 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,893 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,695 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,971 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,757 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,124 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,308 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,111 |
| World Map Quiz | 0 | - | 4.81 | 64,468 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,467 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,004 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,729 |
| Countries by Founding Story | 0 | - | 4.95 | 77,038 |
| Countries by Road Signs | 0 | - | 4.98 | 53,626 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,441 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,895 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,604 |
