| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,182 |
| North Sea Countries | 0 | - | 4.92 | 87,715 |
| Black Sea Countries | 0 | - | 4.87 | 60,752 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,594 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,692 |
| Seas on the World Map | 0 | - | 4.96 | 136,003 |
| Seas of the World | 0 | - | 5.00 | 158,574 |
| World's Longest Rivers | 0 | - | 4.89 | 137,651 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,581 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,376 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,142 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 97,126 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,049 |
| Countries with Fjords | 0 | - | 4.94 | 101,347 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,910 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,718 |
| Countries With No Rivers | 0 | - | 4.96 | 77,153 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,041 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,939 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,673 |
| Famous Rivers | 0 | - | 4.75 | 105,259 |
| City to River #1 | 0 | - | 4.59 | 35,904 |
| Most Populous River Basins | 0 | - | 4.55 | 39,818 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,356 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,490 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,906 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,317 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,290 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,730 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,002 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,017 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,887 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,162 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,827 |
| Megadiverse Countries | 0 | - | 4.96 | 135,301 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,416 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,077 |
| Rivers by City | 0 | - | 4.38 | 31,781 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,234 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,090 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,634 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,271 |
| Geologic Time Scale | 0 | - | 4.41 | 10,068 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,377 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,851 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,741 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,184 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,034 |
| Biggest City by River | 0 | - | 4.38 | 52,966 |
| Boundary Waters | 0 | - | 4.92 | 88,784 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,424 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,732 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,382 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,992 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,902,972 |
| Landlocked Countries | 0 | - | 4.99 | 426,217 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 589,302 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,940 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,429 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,037 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,053 |
| World Capitals Quiz | 0 | - | 5.00 | 5,108,118 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,425 |
| Himalayan Countries | 0 | - | 4.93 | 140,381 |
| Andean Countries | 0 | - | 4.94 | 85,540 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,696 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,125 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,263 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,497 |
| Danube Countries | 0 | - | 4.97 | 72,438 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,643 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,873 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,203 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,681 |
| European Landlocked Countries | 0 | - | 4.99 | 147,640 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,352 |
| Countries with the Most Species | 0 | - | 4.99 | 103,590 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,454 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,786 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,899 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,860 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,597 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,043 |
| Countries in the Alps | 0 | - | 4.87 | 118,827 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,714 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,941 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,985 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,057 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,994 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,289 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,438 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,889 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,447 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,211 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,899 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,760 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,585 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,824 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,917 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,926 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,638 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 74,644 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,715 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,849 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,227 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,533 |
| Largest Countries By Category | 0 | - | 4.97 | 158,907 |
| Countries by Countries | 0 | - | 4.96 | 63,672 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,301 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,414 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,680 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,090 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,455 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,130 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,806,464 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,493 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,992 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,822 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,623 |
| Rivers on Borders | 0 | - | 4.02 | 22,740 |
| Rivers A-Z | 0 | - | 4.35 | 32,862 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,177 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,591 |
| Longest International Borders | 0 | - | 4.99 | 265,853 |
| Countries with Three Borders | 0 | - | 4.96 | 36,787 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,370 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,510 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.86 | 37,185 |
| Demonym of Every Country | 0 | - | 4.90 | 61,514 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,710 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,600,236 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,774 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,867 |
| Island Countries | 0 | - | 4.99 | 712,676 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,677 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,107 |
| Northernmost Countries | 0 | - | 4.99 | 364,179 |
| Countries of South America | 0 | - | 5.00 | 933,122 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,977 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,298 |
| "Land" Countries | 0 | - | 4.98 | 338,465 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,338 |
| All Country Flags of the World | 0 | - | 5.00 | 3,716,531 |
| Top World Languages | 0 | - | 4.92 | 830,188 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,738 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,012 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,602 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,616 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,254 |
| Countries with Megacities | 0 | - | 4.99 | 267,310 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,933 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,188 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,254 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,302 |
| Biggest Cities in the World | 0 | - | 4.91 | 805,941 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,357 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,407 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,001 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,244 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,273 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,200 |
| Countries by Capital City | 0 | - | 5.00 | 69,456 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,893 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,261 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,013 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,844 |
| Moved Capital Cities | 0 | - | 4.96 | 74,672 |
| World Capitals with a Unique First Letter | 0 | - | 4.83 | 75,823 |
| Countries by Official Language | 0 | - | 4.95 | 196,060 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,707 |
| Countries in their Native Language | 0 | - | 4.99 | 199,793 |
| Independence from Whom | 0 | - | 4.99 | 213,151 |
| Subdivisions by Country | 0 | - | 4.87 | 50,633 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,509 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,990 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,549 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,725 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,233 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,317 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,872 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,150 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,578 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,098 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,265 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,598 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,397 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,456 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,160 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,596 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,897 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,435 |
| World Map Quiz | 0 | - | 4.81 | 65,783 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,432 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,738 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,630 |
| Countries by Founding Story | 0 | - | 4.95 | 77,831 |
| Countries by Road Signs | 0 | - | 4.98 | 54,376 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,328 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,128 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,600 |
