| Metals of Antiquity | 0 | - | 4.94 | 93,069 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,578 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,288 |
| Elements Named for Countries | 0 | - | 4.52 | 24,496 |
| Countries with Glaciers | 0 | - | 4.97 | 104,786 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,799 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,357 |
| Boundary Waters | 0 | - | 4.92 | 88,150 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,905 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,532 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,880 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,435 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,725 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 134,377 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,476 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,926 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,743 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,077,952 |
| Landlocked Countries | 0 | - | 4.99 | 415,605 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,360 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,018 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 88,647 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,302 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,228 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,131 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,394 |
| World Capitals Quiz | 0 | - | 5.00 | 5,044,175 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,780 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,406 |
| Himalayan Countries | 0 | - | 4.95 | 136,056 |
| Andean Countries | 0 | - | 4.94 | 83,215 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,531 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,697 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,220 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,867 |
| Danube Countries | 0 | - | 4.97 | 71,285 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,032 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,731 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,913 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,862 |
| European Landlocked Countries | 0 | - | 4.99 | 145,993 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,569 |
| Countries with the Most Species | 0 | - | 4.99 | 95,359 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,696 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,278 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,447 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,078 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,732 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,099 |
| Countries in the Alps | 0 | - | 4.86 | 117,157 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,780 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,642 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,171 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,610 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,411 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,161 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,829 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,912 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,713 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,229 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,281 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,154 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,635 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,901 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,912 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,518 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,810 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,361 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,065 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,404 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,270 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,746 |
| Largest Countries By Category | 0 | - | 4.97 | 157,072 |
| Countries by Countries | 0 | - | 4.96 | 62,466 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,710 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,038 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,387 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,977 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,732,770 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,916 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,560 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,738 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,296 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,968 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,778 |
| Longest International Borders | 0 | - | 4.99 | 264,154 |
| Countries with Three Borders | 0 | - | 4.96 | 36,297 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,718 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,808 |
| Demonym of Every Country | 0 | - | 4.91 | 58,821 |
| Elements by Picture | 0 | - | 4.28 | 69,673 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,032 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,575,388 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,895 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,916 |
| Island Countries | 0 | - | 4.99 | 708,426 |
| Least-Forested Countries | 0 | - | 4.53 | 64,986 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,827 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,025 |
| Northernmost Countries | 0 | - | 4.99 | 358,830 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,512 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,219 |
| Countries of South America | 0 | - | 5.00 | 918,210 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,722 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,183 |
| "Land" Countries | 0 | - | 4.98 | 334,159 |
| NBA Cities Map Quiz | 0 | - | 4.52 | 250,589 |
| MLB Cities Map Quiz | 0 | - | 4.50 | 69,074 |
| Top World Languages | 0 | - | 4.92 | 815,806 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,091 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,234 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,367,777 |
| Europe Map Quiz | 0 | - | 5.00 | 4,741,000 |
| All Country Flags of the World | 0 | - | 5.00 | 3,620,093 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,754 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,234 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,235 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,755 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,330 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,473 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,975 |
| Countries with Megacities | 0 | - | 4.99 | 248,355 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,871 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,394 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,260 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,325 |
| Biggest Cities in the World | 0 | - | 4.91 | 792,907 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,250 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,394 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,954 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,917 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,108 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,963 |
| Countries by Capital City | 0 | - | 5.00 | 67,213 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,597 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 114,131 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,291 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,588 |
| Moved Capital Cities | 0 | - | 4.96 | 73,792 |
| Countries by Official Language | 0 | - | 4.95 | 193,240 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,800 |
| Countries in their Native Language | 0 | - | 4.99 | 197,071 |
| Independence from Whom | 0 | - | 4.99 | 210,210 |
| Subdivisions by Country | 0 | - | 4.86 | 50,155 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,105 |
| Megadiverse Countries | 0 | - | 4.96 | 134,477 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,232 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,029 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,558 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,917 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,909 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,144 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,381 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,469 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,311 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,789 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,988 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,531 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,638 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,599 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,812 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,134 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,211 |
| World Map Quiz | 0 | - | 4.81 | 63,847 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,824 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,618 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,496 |
| Countries by Founding Story | 0 | - | 4.95 | 76,746 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,831 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,552 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,275 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,417 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,142 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,342 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,531 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,092 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,558 |
| Widest Countries East to West | 0 | - | 4.92 | 129,049 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,294 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,522 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,662 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,881 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,865 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,254 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,829 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,719 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,649 |
| Countries with Double Letters | 0 | - | 4.96 | 93,738 |
| Countries that End in N | 0 | - | 4.94 | 157,174 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,103 |
| Countries with Six Letters | 0 | - | 4.93 | 210,759 |
| Countries with W | 0 | - | 4.97 | 158,451 |
| Countries with Z | 0 | - | 4.98 | 288,304 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,803 |
| Countries That End in U | 0 | - | 4.95 | 119,627 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,923 |
| Countries that End in O | 0 | - | 4.92 | 158,675 |
| Countries that End in R | 0 | - | 4.87 | 118,390 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,945 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,464 |
