| World's Longest Rivers | 0 | - | 4.89 | 136,418 |
| Countries With No Rivers | 0 | - | 4.96 | 76,739 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,034 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,706 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,317 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,357 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,000 |
| North Sea Countries | 0 | - | 4.92 | 87,348 |
| Black Sea Countries | 0 | - | 4.87 | 60,585 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,342 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,439 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,203 |
| Seas on the World Map | 0 | - | 4.96 | 135,228 |
| Seas of the World | 0 | - | 5.00 | 156,593 |
| Famous Rivers | 0 | - | 4.75 | 104,917 |
| City to River #1 | 0 | - | 4.59 | 35,842 |
| Most Populous River Basins | 0 | - | 4.55 | 39,695 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,328 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,780 |
| Countries with Fjords | 0 | - | 4.94 | 100,826 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,414 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,651 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,636 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,450 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,921 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,389 |
| Biggest City by River | 0 | - | 4.41 | 52,834 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,053 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,022 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,008 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,526 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,791 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,355 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,360 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,560 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,693 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,518 |
| Megadiverse Countries | 0 | - | 4.96 | 134,813 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,215 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,997 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,498 |
| Geologic Time Scale | 0 | - | 4.41 | 10,006 |
| Rivers on Borders | 0 | - | 4.02 | 22,689 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,736 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,796 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,220 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,217 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,601 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,010 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,628 |
| Boundary Waters | 0 | - | 4.92 | 88,413 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,117 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,987 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,295 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,399 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,381,436 |
| Landlocked Countries | 0 | - | 4.99 | 419,562 |
| World Capitals Quiz | 0 | - | 5.00 | 5,067,571 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,760,921 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,531 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,717 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,791 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,017 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,539 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,584,263 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,769 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,518 |
| Island Countries | 0 | - | 4.99 | 710,029 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,255 |
| Himalayan Countries | 0 | - | 4.95 | 137,704 |
| Andean Countries | 0 | - | 4.95 | 84,072 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,311 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,828 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,938 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,429 |
| Danube Countries | 0 | - | 4.97 | 71,728 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,650 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,122 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,764 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,840 |
| European Landlocked Countries | 0 | - | 4.99 | 146,847 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,214 |
| Countries with the Most Species | 0 | - | 4.99 | 102,988 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,375 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,452 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,611 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,356 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,029 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,422 |
| Countries in the Alps | 0 | - | 4.87 | 117,792 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,204 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,502 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,458 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,144 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,172 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,762 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,357 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,250 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,012 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,612 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,517 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,365 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,976 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,243 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,265 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,312 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,101 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,610 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,635 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,653 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,387 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,034 |
| Largest Countries By Category | 0 | - | 4.97 | 157,758 |
| Countries by Countries | 0 | - | 4.96 | 62,913 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,304 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,176 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,484 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,753 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,710 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,393 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,765 |
| Northernmost Countries | 0 | - | 4.99 | 360,775 |
| Countries of South America | 0 | - | 5.00 | 923,828 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,339 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,603 |
| "Land" Countries | 0 | - | 4.98 | 335,947 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,599 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,451 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,768 |
| Top World Languages | 0 | - | 4.92 | 820,973 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,286 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,408 |
| Rivers A-Z | 0 | - | 4.35 | 32,772 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,262 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,118 |
| Longest International Borders | 0 | - | 4.99 | 264,762 |
| Countries with Three Borders | 0 | - | 4.96 | 36,483 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,949 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,066 |
| Demonym of Every Country | 0 | - | 4.91 | 59,212 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,364 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,232 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,205 |
| Countries with Megacities | 0 | - | 4.99 | 262,078 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,056 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,092 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,355 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,130 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,975 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,077 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,296 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,371 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,077 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,789 |
| Countries by Capital City | 0 | - | 5.00 | 68,057 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,065 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,548 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,044 |
| Moved Capital Cities | 0 | - | 4.96 | 74,116 |
| Countries by Official Language | 0 | - | 4.95 | 194,764 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,698 |
| Countries in their Native Language | 0 | - | 4.99 | 198,310 |
| Independence from Whom | 0 | - | 4.99 | 211,482 |
| Subdivisions by Country | 0 | - | 4.86 | 50,315 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,829 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,634 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,213 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,788 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,033 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,783 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,419 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,063 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,880 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,521 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,009 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,130 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,750 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,024 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,818 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,186 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,365 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,154 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,370 |
| World Map Quiz | 0 | - | 4.81 | 64,698 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,885 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,100 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,833 |
| Countries by Founding Story | 0 | - | 4.95 | 77,125 |
| Countries by Road Signs | 0 | - | 4.98 | 53,717 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,638 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,006 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,726 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,522 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,600 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,745 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,888 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,305 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,340 |
| Widest Countries East to West | 0 | - | 4.92 | 129,429 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,401 |
