| Metals of Antiquity | 0 | - | 4.95 | 93,443 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,716 |
| Elements Named for Countries | 0 | - | 4.53 | 24,707 |
| Countries with Glaciers | 0 | - | 4.97 | 105,423 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,557 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,659 |
| Boundary Waters | 0 | - | 4.92 | 88,468 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,170 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,095 |
| The Only African Country ... | 0 | - | 4.99 | 129,105 |
| The Only American Country ... | 0 | - | 4.92 | 121,616 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,130 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 78,132 |
| Bordering Countries by Clue #1 | 0 | - | 4.97 | 83,074 |
| Bordering Countries by Clue #2 | 0 | - | 4.95 | 87,365 |
| Walking Across Borders with Hints #1 | 0 | - | 4.95 | 108,964 |
| Walking Across Borders with Hints #2 | 0 | - | 4.97 | 87,585 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,941 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,461,705 |
| Landlocked Countries | 0 | - | 4.99 | 420,553 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,450 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,296 |
| Large Countries with Small Economies | 0 | - | 4.95 | 80,914 |
| Countries by Wikipedia Descriptions #1 | 0 | - | 4.93 | 65,352 |
| Countries by Wikipedia Descriptions #4 | 0 | - | 4.87 | 56,962 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,610 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,954 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,185 |
| World Capitals Quiz | 0 | - | 5.00 | 5,073,987 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,717 |
| Himalayan Countries | 0 | - | 4.95 | 138,090 |
| Andean Countries | 0 | - | 4.95 | 84,270 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,488 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,336 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,121 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,565 |
| Danube Countries | 0 | - | 4.97 | 71,836 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,798 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,238 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,977 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,426 |
| European Landlocked Countries | 0 | - | 4.99 | 146,966 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,380 |
| Countries with the Most Species | 0 | - | 4.99 | 103,092 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,533 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,508 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,659 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,444 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,116 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,506 |
| Countries in the Alps | 0 | - | 4.87 | 117,962 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,491 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,712 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,549 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,454 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,306 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,833 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,471 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,341 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,078 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,704 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,568 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,421 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,071 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,349 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,367 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,546 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,181 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,691 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,823 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,187 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,671 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,111 |
| Largest Countries By Category | 0 | - | 4.97 | 157,933 |
| Countries by Countries | 0 | - | 4.97 | 63,013 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,468 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,218 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,513 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,511 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,776 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,560 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,795 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,357 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,443 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,599 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,189 |
| Longest International Borders | 0 | - | 4.99 | 264,948 |
| Countries with Three Borders | 0 | - | 4.96 | 36,534 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,014 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,133 |
| Demonym of Every Country | 0 | - | 4.91 | 60,163 |
| Elements by Picture | 0 | - | 4.27 | 69,968 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,309 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,469 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,052 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,249 |
| Island Countries | 0 | - | 4.99 | 710,396 |
| Least-Forested Countries | 0 | - | 4.53 | 65,206 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,086 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,899 |
| Northernmost Countries | 0 | - | 4.99 | 361,232 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,629 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,537 |
| Countries of South America | 0 | - | 5.00 | 925,131 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,068 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,986 |
| Countries Ending in "IA" by Clue #1 | 0 | - | 4.74 | 70,488 |
| "Land" Countries | 0 | - | 4.98 | 336,438 |
| Top World Languages | 0 | - | 4.92 | 822,269 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,149 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,742 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,386 |
| All Country Flags of the World | 0 | - | 5.00 | 3,664,952 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,280 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,399 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,315 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,361 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,762 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,355 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,471 |
| Countries with Megacities | 0 | - | 4.99 | 263,444 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,306 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,255 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,605 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,291 |
| Biggest Cities in the World | 0 | - | 4.91 | 798,885 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,134 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,252 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,404 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,495 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,228 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,000 |
| Countries by Capital City | 0 | - | 5.00 | 68,280 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,166 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,650 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,440 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,196 |
| Moved Capital Cities | 0 | - | 4.96 | 74,211 |
| Countries by Official Language | 0 | - | 4.95 | 194,941 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,961 |
| Countries in their Native Language | 0 | - | 4.99 | 198,465 |
| Independence from Whom | 0 | - | 4.99 | 211,721 |
| Subdivisions by Country | 0 | - | 4.86 | 50,362 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,988 |
| Megadiverse Countries | 0 | - | 4.96 | 134,886 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,809 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,261 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,846 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,060 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,916 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,485 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,226 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,938 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,565 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,043 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,347 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,796 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,095 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,873 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,253 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,418 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,685 |
| World Map Quiz | 0 | - | 4.81 | 64,868 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,424 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,198 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,649 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,786 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,096 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,832 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,781 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,727 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,860 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,150 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,353 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,440 |
| Widest Countries East to West | 0 | - | 4.92 | 129,506 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,416 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,167 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,063 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,643 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,417 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,708 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,311 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,816 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,764 |
| Countries with Double Letters | 0 | - | 4.97 | 95,405 |
| Countries that End in N | 0 | - | 4.95 | 170,444 |
| Countries with Five Letters | 0 | - | 4.96 | 281,402 |
| Countries with Six Letters | 0 | - | 4.94 | 212,862 |
| Countries with W | 0 | - | 4.97 | 159,737 |
| Countries with Z | 0 | - | 4.98 | 290,669 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,999 |
| Countries That End in U | 0 | - | 4.95 | 120,529 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,025 |
| Countries that End in O | 0 | - | 4.92 | 159,298 |
| Countries that End in R | 0 | - | 4.87 | 118,811 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,583 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,641 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,341 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,231 |
