| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,933 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,225,492 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,851 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,409 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,636 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,400 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,958 |
| Countries with Four Letters | 0 | - | 4.99 | 420,875 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,870 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,991 |
| Landlocked Countries | 0 | - | 4.99 | 417,411 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,192 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,464 |
| Country Chain | 0 | - | 4.96 | 216,569 |
| Countries by Emojis | 0 | - | 4.99 | 238,124 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,531 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,109 |
| Islands by Country #1 | 0 | - | 4.87 | 174,924 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,240 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,584 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,551 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,746,735 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,408 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,023 |
| Name a Valid Country #1 | 0 | - | 4.99 | 287,645 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,475 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,417 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,613 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,574 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 717,232 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,282 |
| Himalayan Countries | 0 | - | 4.95 | 136,807 |
| Andean Countries | 0 | - | 4.95 | 83,629 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,885 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,207 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,559 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,153 |
| Danube Countries | 0 | - | 4.97 | 71,502 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,333 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,919 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,332 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,364 |
| European Landlocked Countries | 0 | - | 4.99 | 146,216 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,907 |
| Countries with the Most Species | 0 | - | 4.99 | 102,491 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,032 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,363 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,540 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,211 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,868 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,247 |
| Countries in the Alps | 0 | - | 4.86 | 117,456 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,979 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,072 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,319 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,827 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,922 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,334 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,091 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,056 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,872 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,412 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,412 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,248 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,802 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,070 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,079 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,879 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,953 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,481 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,324 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,496 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,809 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,885 |
| Largest Countries By Category | 0 | - | 4.97 | 157,390 |
| Countries by Countries | 0 | - | 4.96 | 62,683 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,978 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,114 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,432 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,169 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,697 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,172 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,319 |
| Island Countries | 0 | - | 4.99 | 709,169 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,375 |
| Northernmost Countries | 0 | - | 4.99 | 359,811 |
| Countries of South America | 0 | - | 5.00 | 920,808 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,525 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,861,533 |
| "Land" Countries | 0 | - | 4.98 | 335,302 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,165 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,795 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,810 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,542 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,189 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,405 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,307 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,973 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,002 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,094 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,433 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,281 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,524 |
| Fictional Characters by Country #1 | 0 | - | 4.31 | 59,540 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,891 |
| Random Countries by Borders | 0 | - | 4.99 | 82,121 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,342 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,544 |
| Countries with Megacities | 0 | - | 4.99 | 249,517 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,388 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,706 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,728 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,667 |
| Countries by Official Language | 0 | - | 4.95 | 194,307 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,135 |
| Countries in their Native Language | 0 | - | 4.99 | 197,901 |
| Independence from Whom | 0 | - | 4.99 | 211,013 |
| Subdivisions by Country | 0 | - | 4.86 | 50,233 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,482 |
| Megadiverse Countries | 0 | - | 4.96 | 134,638 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,051 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,120 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,676 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,971 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,535 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,283 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,735 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,651 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,417 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,824 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,515 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,630 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,730 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,692 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,907 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,252 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,784 |
| World Map Quiz | 0 | - | 4.81 | 64,250 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 136,724 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,797 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,819 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,220 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,760 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,490 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,943 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,372 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,541 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,702 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,191 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,171 |
| Widest Countries East to West | 0 | - | 4.92 | 129,242 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,345 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,762 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,951 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,209 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,064 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,434 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,165 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,695 |
| Countries with Double Letters | 0 | - | 4.97 | 94,703 |
| Countries that End in N | 0 | - | 4.95 | 168,979 |
| Countries with Five Letters | 0 | - | 4.96 | 275,144 |
| Countries with Six Letters | 0 | - | 4.94 | 211,987 |
| Countries with W | 0 | - | 4.97 | 159,228 |
| Countries with Z | 0 | - | 4.98 | 289,361 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,425 |
| Countries That End in U | 0 | - | 4.95 | 120,248 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,446 |
| Countries that End in O | 0 | - | 4.92 | 159,066 |
| Countries that End in R | 0 | - | 4.87 | 118,632 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,404 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,025 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,910 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,936 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,521 |
| Countries That End in Y | 0 | - | 4.90 | 185,542 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,011 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,232 |
| Countries that End in I | 0 | - | 4.94 | 134,752 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,835 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,477 |
| Countries That End in NIA | 0 | - | 4.92 | 109,393 |
| Countries That End in BIA | 0 | - | 4.93 | 148,676 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,543 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,896 |
| Countries That End in RIA | 0 | - | 4.93 | 126,416 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,474 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,302 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,999 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,320 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,951 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,224 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,548 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,078 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,954 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,106 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,651 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,342 |
| Countries that End in L | 0 | - | 4.94 | 156,402 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,354 |
