| Countries With No Rivers | 0 | - | 4.96 | 76,270 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,618 |
| Countries with Fjords | 0 | - | 4.93 | 100,559 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,096 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,470 |
| African Great Lakes | 0 | - | 4.82 | 65,788 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,238 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,500 |
| Megadiverse Countries | 0 | - | 4.96 | 134,603 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,894 |
| North Sea Countries | 0 | - | 4.92 | 86,862 |
| Black Sea Countries | 0 | - | 4.87 | 60,492 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,201 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,310 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,074 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 115,253 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,554 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,040 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,088 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,689 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,741 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,433 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,212,530 |
| Landlocked Countries | 0 | - | 4.99 | 417,268 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,424 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,745,268 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,792 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,618 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,217 |
| Himalayan Countries | 0 | - | 4.95 | 136,761 |
| Andean Countries | 0 | - | 4.95 | 83,604 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,866 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,167 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,530 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,125 |
| Danube Countries | 0 | - | 4.97 | 71,487 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,304 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,904 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,297 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,298 |
| European Landlocked Countries | 0 | - | 4.99 | 146,196 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,878 |
| Countries with the Most Species | 0 | - | 4.99 | 102,384 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,007 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,355 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,536 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,205 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,857 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,234 |
| Countries in the Alps | 0 | - | 4.86 | 117,434 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,964 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,046 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,305 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,806 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,905 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,322 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,072 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,044 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,861 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,394 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,397 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,240 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,790 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,052 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,064 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,840 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,942 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,467 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,310 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,370 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,751 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,876 |
| Largest Countries By Category | 0 | - | 4.97 | 157,356 |
| Countries by Countries | 0 | - | 4.96 | 62,672 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,147 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,897 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,532 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,614 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,556 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,105 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,219 |
| Island Countries | 0 | - | 4.99 | 709,097 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,046 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,129 |
| Northernmost Countries | 0 | - | 4.99 | 359,721 |
| Countries of South America | 0 | - | 5.00 | 920,534 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,116 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,927 |
| "Land" Countries | 0 | - | 4.98 | 335,192 |
| Biggest City by River | 0 | - | 4.41 | 52,766 |
| Landforms by Country | 0 | - | 4.52 | 51,948 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,001 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,910 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,106 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,492 |
| Countries with Megacities | 0 | - | 4.99 | 249,424 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,345 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,671 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,674 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,642 |
| Capitals by River | 0 | - | 4.55 | 48,274 |
| Countries by Official Language | 0 | - | 4.95 | 194,244 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,066 |
| Countries in their Native Language | 0 | - | 4.99 | 197,843 |
| Independence from Whom | 0 | - | 4.99 | 210,975 |
| Subdivisions by Country | 0 | - | 4.86 | 50,224 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,449 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,003 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,108 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,661 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,965 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,515 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,275 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,705 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,597 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,408 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,822 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,474 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,620 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,714 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,685 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,893 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,249 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,748 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,774 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,184 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,741 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,474 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,888 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,351 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,523 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,686 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,181 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,125 |
| Widest Countries East to West | 0 | - | 4.92 | 129,219 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,342 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,738 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,946 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,997 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,046 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,420 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,157 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,691 |
| Countries with Double Letters | 0 | - | 4.96 | 94,593 |
| Countries that End in N | 0 | - | 4.95 | 168,677 |
| Countries with Five Letters | 0 | - | 4.96 | 273,169 |
| Countries with Six Letters | 0 | - | 4.93 | 211,849 |
| Countries with W | 0 | - | 4.97 | 159,167 |
| Countries with Z | 0 | - | 4.98 | 289,252 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,363 |
| Countries That End in U | 0 | - | 4.95 | 120,201 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,387 |
| Countries that End in O | 0 | - | 4.92 | 159,032 |
| Countries that End in R | 0 | - | 4.87 | 118,609 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,385 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,963 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,881 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,911 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,495 |
| Countries That End in Y | 0 | - | 4.90 | 185,518 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,974 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,197 |
| Countries that End in I | 0 | - | 4.94 | 134,733 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,802 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,460 |
| Countries That End in NIA | 0 | - | 4.92 | 109,363 |
| Countries That End in BIA | 0 | - | 4.93 | 148,652 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,515 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,868 |
| Countries That End in RIA | 0 | - | 4.93 | 126,396 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,444 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,248 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,967 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,293 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,922 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,203 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,522 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,050 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,927 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,091 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,319 |
| Countries that End in L | 0 | - | 4.94 | 156,377 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,245 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,106 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,749 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,607 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,664 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,440 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,897 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,431 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,888 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,344 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,099 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,892 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,315 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,543 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,554 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,816,162 |
| One Border Countries | 0 | - | 4.98 | 466,796 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,163 |
