| Metals of Antiquity | 0 | - | 4.95 | 93,762 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,803 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,252 |
| Elements Named for Countries | 0 | - | 4.52 | 24,896 |
| Countries with Glaciers | 0 | - | 4.97 | 105,679 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,827 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,850 |
| Boundary Waters | 0 | - | 4.92 | 88,669 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,332 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,485 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,956 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,803 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,758 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 136,972 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,631 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,840 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,101 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,733,758 |
| Landlocked Countries | 0 | - | 4.99 | 423,834 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,508 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,474 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.87 | 89,326 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,820 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,218 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,710 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,733 |
| World Capitals Quiz | 0 | - | 5.00 | 5,094,885 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,098 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,354 |
| Himalayan Countries | 0 | - | 4.94 | 139,531 |
| Andean Countries | 0 | - | 4.94 | 85,064 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,247 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,457 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,806 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,118 |
| Danube Countries | 0 | - | 4.97 | 72,209 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,308 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,624 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,712 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,216 |
| European Landlocked Countries | 0 | - | 4.99 | 147,378 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,984 |
| Countries with the Most Species | 0 | - | 4.99 | 103,423 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,113 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,681 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,793 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,699 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,439 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,852 |
| Countries in the Alps | 0 | - | 4.87 | 118,496 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,081 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,457 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,813 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,814 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,749 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,098 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,923 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,674 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,299 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,018 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,762 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,632 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,389 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,639 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,721 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,381 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,476 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,241 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,364 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,924 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,660 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,381 |
| Largest Countries By Category | 0 | - | 4.97 | 158,548 |
| Countries by Countries | 0 | - | 4.96 | 63,443 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,012 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,348 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,622 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,906 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,208 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,243 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,927 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,660 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,574 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,562 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,444 |
| Longest International Borders | 0 | - | 4.99 | 265,528 |
| Countries with Three Borders | 0 | - | 4.96 | 36,692 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,243 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,370 |
| Demonym of Every Country | 0 | - | 4.90 | 61,153 |
| Elements by Picture | 0 | - | 4.27 | 70,190 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,262 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,328 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,105 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,565 |
| Island Countries | 0 | - | 4.99 | 711,770 |
| Least-Forested Countries | 0 | - | 4.53 | 65,352 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,264 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,469 |
| Northernmost Countries | 0 | - | 4.99 | 363,085 |
| Countries with the Most Mangroves | 0 | - | 4.54 | 34,701 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,745 |
| Countries of South America | 0 | - | 5.00 | 929,994 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,290 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,414 |
| "Land" Countries | 0 | - | 4.98 | 337,888 |
| NBA Cities Map Quiz | 0 | - | 4.51 | 253,416 |
| MLB Cities Map Quiz | 0 | - | 4.50 | 69,859 |
| Top World Languages | 0 | - | 4.92 | 827,227 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,181 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 124,451 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,549 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,572 |
| All Country Flags of the World | 0 | - | 5.00 | 3,697,217 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,727 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,646 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,355 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,779 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,272 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,719 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,448 |
| Countries with Megacities | 0 | - | 4.99 | 265,886 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,240 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,755 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,500 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,852 |
| Biggest Cities in the World | 0 | - | 4.92 | 803,429 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,958 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,888 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,785 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,974 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,906 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,770 |
| Countries by Capital City | 0 | - | 5.00 | 69,052 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,628 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,039 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,032 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,620 |
| Moved Capital Cities | 0 | - | 4.96 | 74,517 |
| Countries by Official Language | 0 | - | 4.95 | 195,645 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,101 |
| Countries in their Native Language | 0 | - | 4.99 | 199,424 |
| Independence from Whom | 0 | - | 4.99 | 212,571 |
| Subdivisions by Country | 0 | - | 4.87 | 50,534 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,075 |
| Megadiverse Countries | 0 | - | 4.96 | 135,156 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,444 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,463 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,343 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,163 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,375 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,700 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,742 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,471 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,748 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,207 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,095 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,259 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,332 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,062 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,477 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,602 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,840 |
| World Map Quiz | 0 | - | 4.81 | 65,381 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,280 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,532 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,742 |
| Countries by Founding Story | 0 | - | 4.95 | 77,536 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,666 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,683 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,338 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,968 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,199 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,321 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,537 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,587 |
| Tallest Countries North to South | 0 | - | 4.85 | 129,043 |
| Widest Countries East to West | 0 | - | 4.92 | 130,200 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,530 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,024 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,439 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,932 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,808 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,084 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,447 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,906 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,853 |
| Countries with Double Letters | 0 | - | 4.96 | 96,686 |
| Countries that End in N | 0 | - | 4.95 | 171,567 |
| Countries with Five Letters | 0 | - | 4.96 | 283,217 |
| Countries with Six Letters | 0 | - | 4.94 | 214,027 |
| Countries with W | 0 | - | 4.96 | 160,644 |
| Countries with Z | 0 | - | 4.98 | 291,972 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,012 |
| Countries That End in U | 0 | - | 4.95 | 121,025 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,797 |
| Countries that End in O | 0 | - | 4.92 | 159,673 |
| Countries that End in R | 0 | - | 4.87 | 119,074 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,833 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,471 |
