| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,386 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,291 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,211 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,294 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,909 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,263 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,944,246 |
| Landlocked Countries | 0 | - | 4.99 | 413,872 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,088,497 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,898 |
| Countries with Four Letters | 0 | - | 4.99 | 418,698 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,368 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,701 |
| Himalayan Countries | 0 | - | 4.95 | 135,458 |
| Andean Countries | 0 | - | 4.94 | 82,869 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,261 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,268 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,953 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,640 |
| Danube Countries | 0 | - | 4.97 | 71,103 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,794 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,563 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,532 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,456 |
| European Landlocked Countries | 0 | - | 4.99 | 145,784 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,247 |
| Countries with the Most Species | 0 | - | 4.99 | 95,257 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,391 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,205 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,377 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,383 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,972 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,494 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,593 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,969 |
| Countries in the Alps | 0 | - | 4.86 | 116,866 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,589 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,302 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,028 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,443 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,203 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,028 |
| Country Chain | 0 | - | 4.96 | 215,802 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,605 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,781 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,409 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,091 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,202 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,056 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,468 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,777 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,773 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,128 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,675 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,272 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,804 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,456 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,764 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,618 |
| Largest Countries By Category | 0 | - | 4.97 | 156,810 |
| Countries by Emojis | 0 | - | 4.99 | 236,306 |
| Countries by Countries | 0 | - | 4.96 | 62,281 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,145 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,180 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,440 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,973 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,339 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,794 |
| Islands by Country #1 | 0 | - | 4.87 | 174,528 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,951 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,306 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,355 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,931 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,911 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,748 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,514 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,704 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,889 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,492 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 711,951 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,445 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,209 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,003 |
| Island Countries | 0 | - | 4.99 | 707,730 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,850 |
| Northernmost Countries | 0 | - | 4.99 | 357,893 |
| Countries of South America | 0 | - | 5.00 | 915,312 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,165 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,488 |
| "Land" Countries | 0 | - | 4.98 | 333,720 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,491 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,483 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,380 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,357 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,876 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,123 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,730 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,653 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,675 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,934 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,443 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,516 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,620 |
| Random Countries by Borders | 0 | - | 4.99 | 81,703 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,299 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,456 |
| Countries with Megacities | 0 | - | 4.99 | 247,281 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,290 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,095 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,721 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,022 |
| Countries by Official Language | 0 | - | 4.95 | 192,828 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,196 |
| Countries in their Native Language | 0 | - | 4.99 | 196,693 |
| Independence from Whom | 0 | - | 4.99 | 209,774 |
| Subdivisions by Country | 0 | - | 4.86 | 50,080 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,816 |
| Megadiverse Countries | 0 | - | 4.97 | 133,927 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,857 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,930 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,439 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,868 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,702 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,024 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,094 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,172 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,227 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,643 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,440 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,509 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,515 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,703 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,036 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,661 |
| World Map Quiz | 0 | - | 4.81 | 63,532 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,843 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,358 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,415 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,029 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,976 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,850 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,893 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,094 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,301 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,959 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,352 |
| Widest Countries East to West | 0 | - | 4.92 | 128,630 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,220 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,261 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,586 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,712 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,662 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,081 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,056 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,592 |
| Countries with Double Letters | 0 | - | 4.97 | 93,438 |
| Countries that End in N | 0 | - | 4.94 | 156,936 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,745 |
| Countries with Six Letters | 0 | - | 4.93 | 210,414 |
| Countries with W | 0 | - | 4.97 | 158,266 |
| Countries with Z | 0 | - | 4.98 | 287,938 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,590 |
| Countries That End in U | 0 | - | 4.95 | 119,536 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,627 |
| Countries that End in O | 0 | - | 4.92 | 158,575 |
| Countries that End in R | 0 | - | 4.87 | 118,290 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,869 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,132 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,371 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,522 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,059 |
| Countries That End in Y | 0 | - | 4.90 | 185,222 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,423 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,721 |
| Countries that End in I | 0 | - | 4.94 | 134,441 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,252 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,216 |
| Countries That End in NIA | 0 | - | 4.92 | 109,027 |
| Countries That End in BIA | 0 | - | 4.92 | 147,737 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,101 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,511 |
| Countries That End in RIA | 0 | - | 4.93 | 126,106 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,035 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,245 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,546 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,910 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,392 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,948 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,150 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,677 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,540 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,826 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,181 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,853 |
| Countries that End in L | 0 | - | 4.94 | 155,767 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,392 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,996 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,535 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,324 |
