| Metals of Antiquity | 0 | - | 4.95 | 93,956 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.98 | 110,032 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,034 |
| Elements Named for Countries | 0 | - | 4.52 | 24,984 |
| Countries with Glaciers | 0 | - | 4.97 | 105,828 |
| Countries with the Most Forest | 0 | - | 4.87 | 148,075 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,986 |
| Boundary Waters | 0 | - | 4.92 | 88,785 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,428 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,741 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,278 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,177 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,989 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,592 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,121 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,546 |
| Name the Constellations - With a Map | 0 | - | 4.91 | 36,234 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,908,201 |
| Landlocked Countries | 0 | - | 4.99 | 426,318 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,540 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,564 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 89,484 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,944 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,434 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,042 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,056 |
| World Capitals Quiz | 0 | - | 5.00 | 5,108,551 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,476 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,468 |
| Himalayan Countries | 0 | - | 4.93 | 140,416 |
| Andean Countries | 0 | - | 4.94 | 85,561 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,712 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,157 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,276 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,515 |
| Danube Countries | 0 | - | 4.97 | 72,453 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,661 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,885 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,224 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,697 |
| European Landlocked Countries | 0 | - | 4.99 | 147,646 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,366 |
| Countries with the Most Species | 0 | - | 4.99 | 103,593 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,471 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,788 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,903 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,866 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,604 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,052 |
| Countries in the Alps | 0 | - | 4.87 | 118,833 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,739 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,957 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,993 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,069 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,008 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,296 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,454 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,901 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,452 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,216 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,904 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,767 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,590 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,832 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,924 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,935 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,645 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 74,968 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,721 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,880 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,248 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,542 |
| Largest Countries By Category | 0 | - | 4.97 | 158,924 |
| Countries by Countries | 0 | - | 4.96 | 63,685 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,308 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,420 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,685 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,132 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,806,880 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,500 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,993 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,825 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,626 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,194 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,591 |
| Longest International Borders | 0 | - | 4.99 | 265,873 |
| Countries with Three Borders | 0 | - | 4.96 | 36,791 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,377 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,512 |
| Demonym of Every Country | 0 | - | 4.90 | 61,528 |
| Elements by Picture | 0 | - | 4.27 | 70,336 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,782 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,600,370 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,791 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,914 |
| Island Countries | 0 | - | 4.99 | 712,702 |
| Least-Forested Countries | 0 | - | 4.53 | 65,431 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,355 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,179 |
| Northernmost Countries | 0 | - | 4.99 | 364,202 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,739 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,875 |
| Countries of South America | 0 | - | 5.00 | 933,206 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,141 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,890,505 |
| "Land" Countries | 0 | - | 4.98 | 338,498 |
| NBA Cities Map Quiz | 0 | - | 4.51 | 253,952 |
| MLB Cities Map Quiz | 0 | - | 4.50 | 69,962 |
| Top World Languages | 0 | - | 4.92 | 830,277 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,196 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,733 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,857 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,553 |
| All Country Flags of the World | 0 | - | 5.00 | 3,717,048 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,946 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,741 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,396 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,021 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,724 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,645 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,273 |
| Countries with Megacities | 0 | - | 4.99 | 267,351 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,948 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,206 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,265 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,310 |
| Biggest Cities in the World | 0 | - | 4.91 | 806,016 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,368 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,419 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,009 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,253 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,286 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,209 |
| Countries by Capital City | 0 | - | 5.00 | 69,467 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,903 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,265 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,039 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,849 |
| Moved Capital Cities | 0 | - | 4.96 | 74,678 |
| Countries by Official Language | 0 | - | 4.95 | 196,077 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,732 |
| Countries in their Native Language | 0 | - | 4.99 | 199,804 |
| Independence from Whom | 0 | - | 4.99 | 213,176 |
| Subdivisions by Country | 0 | - | 4.87 | 50,635 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,528 |
| Megadiverse Countries | 0 | - | 4.96 | 138,583 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,002 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,552 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,735 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,234 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,328 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,878 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,160 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,583 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,102 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,268 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,612 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,404 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,457 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,165 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,599 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,900 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,461 |
| World Map Quiz | 0 | - | 4.81 | 65,796 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,465 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,742 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,792 |
| Countries by Founding Story | 0 | - | 4.95 | 77,842 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,344 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,143 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,605 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,684 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,474 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,588 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,781 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,715 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,811 |
| Widest Countries East to West | 0 | - | 4.92 | 130,760 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,610 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,293 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,528 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,088 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,021 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,512 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,513 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.63 | 37,956 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,902 |
| Countries with Double Letters | 0 | - | 4.96 | 97,174 |
| Countries that End in N | 0 | - | 4.95 | 172,087 |
| Countries with Five Letters | 0 | - | 4.96 | 284,121 |
| Countries with Six Letters | 0 | - | 4.94 | 214,588 |
| Countries with W | 0 | - | 4.96 | 161,021 |
| Countries with Z | 0 | - | 4.98 | 292,559 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,358 |
| Countries That End in U | 0 | - | 4.95 | 121,229 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,177 |
| Countries that End in O | 0 | - | 4.92 | 160,252 |
| Countries that End in R | 0 | - | 4.87 | 119,207 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,975 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,932 |
