| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,829 |
| Landlocked Countries | 0 | - | 4.99 | 416,098 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,121,042 |
| Five Closest Countries by Country #3 | 0 | - | 4.97 | 120,839 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,214 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,711 |
| Countries Closest to an Unknown Country A-Z #1 | 0 | - | 4.91 | 79,638 |
| Countries Closest to an Unknown Country A-Z #2 | 0 | - | 4.96 | 72,866 |
| Countries Closest to an Unknown Country A-Z #3 | 0 | - | 4.91 | 61,308 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,657 |
| Himalayan Countries | 0 | - | 4.95 | 136,267 |
| Andean Countries | 0 | - | 4.95 | 83,347 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,618 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,831 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,318 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,934 |
| Danube Countries | 0 | - | 4.97 | 71,339 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,123 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,797 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,032 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,987 |
| European Landlocked Countries | 0 | - | 4.99 | 146,056 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,668 |
| Countries with the Most Species | 0 | - | 4.99 | 98,371 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,810 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,307 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,481 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,121 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,764 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,137 |
| Countries in the Alps | 0 | - | 4.86 | 117,263 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,850 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,768 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,215 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,672 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,614 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,209 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,918 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,956 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,755 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,287 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,329 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,184 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,681 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,943 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,946 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,612 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,856 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,391 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,137 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,699 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,442 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,784 |
| Largest Countries By Category | 0 | - | 4.97 | 157,183 |
| Countries by Countries | 0 | - | 4.96 | 62,540 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,806 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,063 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,400 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,546 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,356 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,037 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,736,846 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,649 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,433 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,562 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,344 |
| Island Countries | 0 | - | 4.99 | 708,630 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,704 |
| Northernmost Countries | 0 | - | 4.99 | 359,099 |
| Countries of South America | 0 | - | 5.00 | 918,953 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,708 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,866 |
| "Land" Countries | 0 | - | 4.98 | 334,294 |
| Countries With the Most Neighbors | 0 | - | 4.45 | 90,416 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,087 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,137 |
| Countries with Megacities | 0 | - | 4.99 | 248,653 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,998 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,470 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,381 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,419 |
| Countries by Official Language | 0 | - | 4.95 | 193,813 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,307 |
| Countries in their Native Language | 0 | - | 4.99 | 197,470 |
| Independence from Whom | 0 | - | 4.99 | 210,416 |
| Subdivisions by Country | 0 | - | 4.86 | 50,175 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,227 |
| Megadiverse Countries | 0 | - | 4.96 | 134,501 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,676 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,058 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,601 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,937 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,197 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,180 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,483 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,508 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,338 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,088 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,558 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,625 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,171 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,376 |
| World Map Quiz | 0 | - | 4.81 | 63,958 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,085 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,651 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,453 |
| Countries by Founding Story | 0 | - | 4.95 | 76,818 |
| Countries by Road Signs | 0 | - | 4.98 | 53,354 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,961 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,611 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,333 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,555 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,202 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,395 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,575 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,117 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,602 |
| Widest Countries East to West | 0 | - | 4.92 | 129,097 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,308 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,584 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,810 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,926 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,310 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,992 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,657 |
| Countries with Double Letters | 0 | - | 4.96 | 93,828 |
| Countries that End in N | 0 | - | 4.94 | 157,263 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,227 |
| Countries with Six Letters | 0 | - | 4.93 | 210,855 |
| Countries with W | 0 | - | 4.97 | 158,520 |
| Countries with Z | 0 | - | 4.98 | 288,414 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,861 |
| Countries That End in U | 0 | - | 4.95 | 119,668 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,020 |
| Countries that End in O | 0 | - | 4.92 | 158,699 |
| Countries that End in R | 0 | - | 4.87 | 118,417 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,969 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,579 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,646 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,729 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,299 |
| Countries That End in Y | 0 | - | 4.90 | 185,327 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,746 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,007 |
| Countries that End in I | 0 | - | 4.94 | 134,598 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,604 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,367 |
| Countries That End in NIA | 0 | - | 4.92 | 109,229 |
| Countries That End in BIA | 0 | - | 4.93 | 148,465 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,351 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,708 |
| Countries That End in RIA | 0 | - | 4.93 | 126,267 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,257 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,932 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,776 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,134 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,680 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,082 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,369 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,886 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,773 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,948 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,442 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,105 |
| Countries that End in L | 0 | - | 4.94 | 156,214 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,592 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,039 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,684 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,518 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,581 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,204 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,742 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,162 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,764 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,179 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,001 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,856 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,274 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,491 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,476 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,157 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,646 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,503 |
| One Border Countries | 0 | - | 4.98 | 466,152 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,996 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,811,322 |
| Countries Closest to the Equator A-Z | 0 | - | 4.53 | 39,043 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,601,514 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,236 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,786 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,256 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,044 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,042 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,592 |
| Nearest Capital City #1 | 0 | - | 4.83 | 57,409 |
| Capitals Furthest from the Border | 0 | - | 4.96 | 68,406 |
| Countries by National Anthem | 0 | - | 4.92 | 71,100 |
| NATO Countries | 0 | - | 4.98 | 277,728 |
