| World's Longest Rivers | 0 | - | 4.89 | 137,798 |
| Countries With No Rivers | 0 | - | 4.96 | 77,258 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,148 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,466 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 57,003 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,253 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,427 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,228 |
| North Sea Countries | 0 | - | 4.92 | 87,791 |
| Black Sea Countries | 0 | - | 4.87 | 60,807 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,661 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,756 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,425 |
| Seas on the World Map | 0 | - | 4.96 | 136,128 |
| Seas of the World | 0 | - | 5.00 | 158,873 |
| Famous Rivers | 0 | - | 4.75 | 105,317 |
| City to River #1 | 0 | - | 4.59 | 35,920 |
| Most Populous River Basins | 0 | - | 4.55 | 39,837 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,518 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,248 |
| Countries with Fjords | 0 | - | 4.94 | 101,605 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,112 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,079 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,950 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,760 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,199 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,903 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,319 |
| Rivers by City | 0 | - | 4.38 | 31,784 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,271 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,102 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,901 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,473 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,985 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,708 |
| Biggest City by River | 0 | - | 4.38 | 52,984 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,929 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,772 |
| Megadiverse Countries | 0 | - | 4.96 | 149,225 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,444 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,086 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,697 |
| Geologic Time Scale | 0 | - | 4.41 | 10,083 |
| Rivers on Borders | 0 | - | 4.02 | 22,754 |
| Seas that Touch the Most Countries | 0 | - | 4.64 | 97,182 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,860 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,325 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,297 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,741 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,039 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,904 |
| Boundary Waters | 0 | - | 4.92 | 88,841 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,471 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,850 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,574 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,069 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,975,654 |
| Landlocked Countries | 0 | - | 4.99 | 427,314 |
| World Capitals Quiz | 0 | - | 5.00 | 5,114,334 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,989 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,997 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,524 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,177 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,198 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,679 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,602,450 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,063 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,408 |
| Island Countries | 0 | - | 4.99 | 713,034 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,953 |
| Himalayan Countries | 0 | - | 4.93 | 140,856 |
| Andean Countries | 0 | - | 4.94 | 85,817 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,931 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,511 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,475 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,702 |
| Danube Countries | 0 | - | 4.97 | 72,564 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,808 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,977 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,458 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,928 |
| European Landlocked Countries | 0 | - | 4.99 | 147,773 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,547 |
| Countries with the Most Species | 0 | - | 4.99 | 103,653 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,650 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,817 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,957 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,929 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,683 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,139 |
| Countries in the Alps | 0 | - | 4.87 | 118,987 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,015 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,146 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,058 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,181 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,132 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,395 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,603 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,999 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,517 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,319 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,955 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,832 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,681 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,932 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,027 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,157 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,741 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,514 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,849 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,341 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,516 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,620 |
| Largest Countries By Category | 0 | - | 4.97 | 159,103 |
| Countries by Countries | 0 | - | 4.97 | 63,815 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,458 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,451 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,706 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,461 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,560 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,238 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,265 |
| Northernmost Countries | 0 | - | 4.99 | 364,634 |
| Countries of South America | 0 | - | 5.00 | 934,369 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,656 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,288 |
| "Land" Countries | 0 | - | 4.98 | 339,034 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,599 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,588 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,028 |
| Top World Languages | 0 | - | 4.92 | 831,367 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,890 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,659 |
| Rivers A-Z | 0 | - | 4.35 | 32,875 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,428 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,664 |
| Longest International Borders | 0 | - | 4.99 | 266,011 |
| Countries with Three Borders | 0 | - | 4.96 | 36,834 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,430 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,575 |
| Demonym of Every Country | 0 | - | 4.90 | 61,645 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,780 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,149 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,520 |
| Countries with Megacities | 0 | - | 4.99 | 267,910 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,176 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,350 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,501 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,451 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,528 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,566 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,088 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,357 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,451 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,401 |
| Countries by Capital City | 0 | - | 5.00 | 69,639 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,170 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,367 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,967 |
| Moved Capital Cities | 0 | - | 4.96 | 74,740 |
| Countries by Official Language | 0 | - | 4.95 | 196,239 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,968 |
| Countries in their Native Language | 0 | - | 4.99 | 199,971 |
| Independence from Whom | 0 | - | 4.99 | 213,423 |
| Subdivisions by Country | 0 | - | 4.87 | 50,671 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,677 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,144 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,583 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,813 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,262 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,485 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,293 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,631 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,171 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,799 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,492 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,511 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,221 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,648 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,981 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,341 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,759 |
| World Map Quiz | 0 | - | 4.81 | 65,933 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,937 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,824 |
| Countries by Founding Story | 0 | - | 4.95 | 77,917 |
| Countries by Road Signs | 0 | - | 4.98 | 54,455 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,537 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,245 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,715 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,960 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,565 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,672 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,863 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,767 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,955 |
| Widest Countries East to West | 0 | - | 4.92 | 130,863 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,630 |
