| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,606,441 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 716,808 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,512 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,292 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,904 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,789 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,933 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,200,666 |
| Landlocked Countries | 0 | - | 4.99 | 417,131 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,143 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,281 |
| Countries with Four Letters | 0 | - | 4.99 | 420,628 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,744,158 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,157 |
| Himalayan Countries | 0 | - | 4.95 | 136,710 |
| Andean Countries | 0 | - | 4.95 | 83,580 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,841 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,127 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,501 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,100 |
| Danube Countries | 0 | - | 4.97 | 71,478 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,287 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,888 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,267 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,257 |
| European Landlocked Countries | 0 | - | 4.99 | 146,177 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,845 |
| Countries with the Most Species | 0 | - | 4.99 | 102,294 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,978 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,351 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,532 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,121 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,199 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 170,402 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,846 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,221 |
| Countries in the Alps | 0 | - | 4.86 | 117,404 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,945 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,016 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,292 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,790 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,886 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,308 |
| Country Chain | 0 | - | 4.96 | 216,505 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,050 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,028 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,851 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,386 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,387 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,225 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,776 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,037 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,045 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,810 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,927 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,457 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,292 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,277 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,713 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,864 |
| Largest Countries By Category | 0 | - | 4.97 | 157,342 |
| Countries by Emojis | 0 | - | 4.99 | 237,980 |
| Countries by Countries | 0 | - | 4.96 | 62,651 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,494 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,938 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,937 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,097 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,415 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,136 |
| Islands by Country #1 | 0 | - | 4.87 | 174,884 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,209 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,565 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,534 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,275 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,397 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,878 |
| Name a Valid Country #1 | 0 | - | 4.99 | 287,372 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,305 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,257 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,299 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,459 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,377 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,032 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,118 |
| Island Countries | 0 | - | 4.99 | 709,027 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,918 |
| Northernmost Countries | 0 | - | 4.99 | 359,632 |
| Countries of South America | 0 | - | 5.00 | 920,350 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,841 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,349 |
| "Land" Countries | 0 | - | 4.98 | 334,978 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,972 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,755 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,773 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,532 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,163 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,646 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,260 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,948 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,894 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,983 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,344 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,194 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,412 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,866 |
| Random Countries by Borders | 0 | - | 4.99 | 82,068 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,262 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,448 |
| Countries with Megacities | 0 | - | 4.99 | 249,336 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,302 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,643 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,623 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,620 |
| Countries by Official Language | 0 | - | 4.95 | 194,179 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,976 |
| Countries in their Native Language | 0 | - | 4.99 | 197,782 |
| Independence from Whom | 0 | - | 4.99 | 210,930 |
| Subdivisions by Country | 0 | - | 4.86 | 50,218 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,427 |
| Megadiverse Countries | 0 | - | 4.96 | 134,587 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,950 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,100 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,654 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,959 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,503 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,259 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,675 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,581 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,397 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,817 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,421 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,605 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,705 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,672 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,884 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,239 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,705 |
| World Map Quiz | 0 | - | 4.81 | 64,194 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,651 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,756 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,142 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,723 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,452 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,830 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,324 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,507 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,673 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,171 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,908 |
| Widest Countries East to West | 0 | - | 4.92 | 129,201 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,338 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,716 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,944 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,986 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,027 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,401 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,140 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,685 |
| Countries with Double Letters | 0 | - | 4.96 | 94,408 |
| Countries that End in N | 0 | - | 4.95 | 168,220 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 267,749 |
| Countries with Six Letters | 0 | - | 4.93 | 211,555 |
| Countries with W | 0 | - | 4.97 | 159,023 |
| Countries with Z | 0 | - | 4.98 | 289,084 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,227 |
| Countries That End in U | 0 | - | 4.95 | 120,091 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,293 |
| Countries that End in O | 0 | - | 4.92 | 158,971 |
| Countries that End in R | 0 | - | 4.87 | 118,566 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,359 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,884 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,824 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,877 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,462 |
| Countries That End in Y | 0 | - | 4.90 | 185,486 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,935 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,166 |
| Countries that End in I | 0 | - | 4.94 | 134,713 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,767 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,448 |
| Countries That End in NIA | 0 | - | 4.92 | 109,337 |
| Countries That End in BIA | 0 | - | 4.93 | 148,632 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,483 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,827 |
| Countries That End in RIA | 0 | - | 4.93 | 126,384 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,400 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,202 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,931 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,263 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,882 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,184 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,498 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,018 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,899 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,065 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,594 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,289 |
| Countries that End in L | 0 | - | 4.94 | 156,343 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,151 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,093 |
