| Countries with the Most Forest | 0 | - | 4.87 | 146,850 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,603 |
| Countries with Glaciers | 0 | - | 4.97 | 104,834 |
| Least-Forested Countries | 0 | - | 4.53 | 65,023 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,857 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,517 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,100 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,392 |
| Boundary Waters | 0 | - | 4.92 | 88,208 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,949 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,624 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,773 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,141,333 |
| Landlocked Countries | 0 | - | 4.99 | 416,378 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,378 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,059 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,350 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,252 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,503 |
| World Capitals Quiz | 0 | - | 5.00 | 5,048,666 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,803 |
| Himalayan Countries | 0 | - | 4.95 | 136,387 |
| Andean Countries | 0 | - | 4.95 | 83,424 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,689 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,910 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,375 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,977 |
| Danube Countries | 0 | - | 4.97 | 71,371 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,165 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,827 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,099 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,050 |
| European Landlocked Countries | 0 | - | 4.99 | 146,099 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,713 |
| Countries with the Most Species | 0 | - | 4.99 | 100,672 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,856 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,315 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,492 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,134 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,790 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,163 |
| Countries in the Alps | 0 | - | 4.86 | 117,296 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,875 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,826 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,234 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,715 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,784 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,224 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,953 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,974 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,782 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,311 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,341 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,193 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,699 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,972 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,983 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,655 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,872 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,406 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,204 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,837 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,495 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,799 |
| Largest Countries By Category | 0 | - | 4.97 | 157,217 |
| Countries by Countries | 0 | - | 4.96 | 62,566 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,841 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,070 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,059 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,738,537 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,002 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,613 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,889 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,319 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,159 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,830 |
| Longest International Borders | 0 | - | 4.99 | 264,257 |
| Countries with Three Borders | 0 | - | 4.96 | 36,335 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,766 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,854 |
| Demonym of Every Country | 0 | - | 4.91 | 58,890 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,598 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,577,217 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,705 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,562 |
| Island Countries | 0 | - | 4.99 | 708,722 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,985 |
| Northernmost Countries | 0 | - | 4.99 | 359,229 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,528 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,268 |
| Countries of South America | 0 | - | 5.00 | 919,300 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,171 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,761 |
| "Land" Countries | 0 | - | 4.98 | 334,455 |
| Top World Languages | 0 | - | 4.92 | 816,908 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,762 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,523 |
| All Country Flags of the World | 0 | - | 5.00 | 3,627,317 |
| Organs of the Human Body (with map) | 0 | - | 4.11 | 118,837 |
| Elements Named for Countries | 0 | - | 4.52 | 24,535 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,258 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,243 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,831 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,508 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,735 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,198 |
| Countries with Megacities | 0 | - | 4.99 | 248,777 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,051 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,510 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,425 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,453 |
| Biggest Cities in the World | 0 | - | 4.91 | 793,692 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,408 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,529 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,024 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,015 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,255 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,106 |
| Countries by Capital City | 0 | - | 5.00 | 67,403 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,700 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,222 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,609 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,662 |
| Moved Capital Cities | 0 | - | 4.96 | 73,856 |
| Countries by Official Language | 0 | - | 4.95 | 193,923 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,423 |
| Countries in their Native Language | 0 | - | 4.99 | 197,553 |
| Independence from Whom | 0 | - | 4.99 | 210,597 |
| Subdivisions by Country | 0 | - | 4.86 | 50,185 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,273 |
| Megadiverse Countries | 0 | - | 4.96 | 134,519 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,754 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,070 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,615 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,942 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,415 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,196 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,527 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,524 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,355 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,801 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,122 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,570 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,669 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,631 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,836 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,185 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,459 |
| World Map Quiz | 0 | - | 4.81 | 64,017 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,667 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,012 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,634 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,367 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,623 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,229 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,428 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,601 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,131 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,619 |
| Widest Countries East to West | 0 | - | 4.92 | 129,120 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,320 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,616 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,901 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,935 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,954 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,332 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,043 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,734 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,663 |
| Countries with Double Letters | 0 | - | 4.96 | 93,960 |
| Countries that End in N | 0 | - | 4.94 | 162,353 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,391 |
| Countries with Six Letters | 0 | - | 4.93 | 210,980 |
| Countries with W | 0 | - | 4.97 | 158,662 |
| Countries with Z | 0 | - | 4.98 | 288,581 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,942 |
| Countries That End in U | 0 | - | 4.95 | 119,806 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,077 |
| Countries that End in O | 0 | - | 4.92 | 158,784 |
| Countries that End in R | 0 | - | 4.87 | 118,464 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,994 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,648 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,688 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,767 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,338 |
| Countries That End in Y | 0 | - | 4.90 | 185,371 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,780 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,038 |
| Countries that End in I | 0 | - | 4.94 | 134,632 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,648 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,382 |
| Countries That End in NIA | 0 | - | 4.92 | 109,263 |
| Countries That End in BIA | 0 | - | 4.93 | 148,504 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,384 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,737 |
| Countries That End in RIA | 0 | - | 4.93 | 126,306 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,290 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,003 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,815 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,164 |
