| Countries With No Rivers | 0 | - | 4.96 | 76,752 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,725 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,334 |
| World's Longest Rivers | 0 | - | 4.89 | 136,502 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,372 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,432 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,656 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,402 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,789 |
| Countries with Fjords | 0 | - | 4.94 | 100,843 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,646 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,457 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,929 |
| Biggest City by River | 0 | - | 4.41 | 52,838 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,057 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,569 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,806 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,002 |
| North Sea Countries | 0 | - | 4.92 | 87,354 |
| Black Sea Countries | 0 | - | 4.87 | 60,589 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,350 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,448 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,209 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,602 |
| Famous Rivers | 0 | - | 4.75 | 104,928 |
| City to River #1 | 0 | - | 4.59 | 35,844 |
| Most Populous River Basins | 0 | - | 4.55 | 39,697 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,331 |
| Seas on the World Map | 0 | - | 4.96 | 135,251 |
| Seas of the World | 0 | - | 5.00 | 156,653 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,524 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,698 |
| Megadiverse Countries | 0 | - | 4.96 | 134,821 |
| Rivers by City | 0 | - | 4.38 | 31,708 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,026 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,011 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,501 |
| Rivers on Borders | 0 | - | 4.02 | 22,691 |
| Geologic Time Scale | 0 | - | 4.41 | 10,008 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,752 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,367 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,365 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,798 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,223 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,223 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,607 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,638 |
| The Only Country ... | 0 | - | 4.91 | 80,928 |
| The Only African Country ... | 0 | - | 4.99 | 129,041 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,104 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,010 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,219 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,998 |
| Large Countries with Small Economies | 0 | - | 4.95 | 80,844 |
| African Great Lakes | 0 | - | 4.82 | 66,143 |
| Boundary Waters | 0 | - | 4.92 | 88,427 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,125 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,004 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,395,368 |
| Landlocked Countries | 0 | - | 4.99 | 419,708 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,082 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,335 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,369 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,415 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,545 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,820 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,043 |
| World Capitals Quiz | 0 | - | 5.00 | 5,068,588 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,314 |
| Himalayan Countries | 0 | - | 4.95 | 137,754 |
| Andean Countries | 0 | - | 4.95 | 84,096 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,333 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,865 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,966 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,445 |
| Danube Countries | 0 | - | 4.97 | 71,739 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,664 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,140 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,797 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,877 |
| European Landlocked Countries | 0 | - | 4.99 | 146,863 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,240 |
| Countries with the Most Species | 0 | - | 4.99 | 103,006 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,397 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,458 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,621 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,371 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,044 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,439 |
| Countries in the Alps | 0 | - | 4.87 | 117,819 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,216 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,540 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,469 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,297 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,207 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,781 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,372 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,261 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,024 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,625 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,524 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,372 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,994 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,260 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,279 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,354 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,117 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,623 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,659 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,738 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,442 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,042 |
| Largest Countries By Category | 0 | - | 4.97 | 157,786 |
| Countries by Countries | 0 | - | 4.96 | 62,923 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,326 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,181 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,412 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,010 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,624 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,477 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,771 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,300 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,417 |
| Rivers A-Z | 0 | - | 4.35 | 32,774 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,339 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,130 |
| Longest International Borders | 0 | - | 4.99 | 264,811 |
| Countries with Three Borders | 0 | - | 4.96 | 36,496 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,959 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,082 |
| Demonym of Every Country | 0 | - | 4.91 | 59,234 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,670 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,584,680 |
| World Cities by Clue #2 | 0 | - | 4.49 | 50,222 |
| Cities that End in A by Clue | 0 | - | 4.55 | 52,947 |
| Cities that End in O by Clue | 0 | - | 4.56 | 61,211 |
| Cities that End in N by Clue | 0 | - | 4.55 | 54,113 |
| Cities that End in I by Clue | 0 | - | 4.61 | 57,275 |
| Cities that End in S by Clue | 0 | - | 4.57 | 44,931 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,822 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,738 |
| Island Countries | 0 | - | 4.99 | 710,088 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,580 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,941 |
| Northernmost Countries | 0 | - | 4.99 | 360,862 |
| Countries of South America | 0 | - | 5.00 | 924,032 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,661 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,236 |
| "Land" Countries | 0 | - | 4.98 | 335,990 |
| The Only Asian Country ... | 0 | - | 4.69 | 122,356 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,457 |
| All Country Flags of the World | 0 | - | 5.00 | 3,657,120 |
| Top World Languages | 0 | - | 4.92 | 821,216 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,062 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,367 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,244 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,493 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,034 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,251 |
| Countries with Megacities | 0 | - | 4.99 | 262,400 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,087 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,113 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,390 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,166 |
| Biggest Cities in the World | 0 | - | 4.91 | 797,783 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,999 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,117 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,320 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,396 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,111 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,846 |
| Countries by Capital City | 0 | - | 5.00 | 68,107 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,088 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,574 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,017 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,078 |
| Moved Capital Cities | 0 | - | 4.96 | 74,127 |
| Capitals by River | 0 | - | 4.55 | 48,302 |
| Countries by Official Language | 0 | - | 4.95 | 194,799 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,746 |
| Countries in their Native Language | 0 | - | 4.99 | 198,337 |
| Independence from Whom | 0 | - | 4.99 | 211,534 |
| Subdivisions by Country | 0 | - | 4.86 | 50,323 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,849 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,667 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,221 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,792 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,036 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,810 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,432 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,088 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,893 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,531 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,017 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,174 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,761 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,039 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,828 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,204 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,373 |
