| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,093,640 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,776 |
| Astronomy Decoder | 0 | - | 4.50 | 37,925 |
| Random Symbol to Element | 0 | - | 4.88 | 92,494 |
| Astronomy Quiz | 0 | - | 4.90 | 82,099 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,369 |
| Solar System Trivia | 0 | - | 4.93 | 46,313 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,554 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,454 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,419 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,526 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,318 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,653 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 335,365 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,139 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,028 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,603 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,733 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,128 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,296 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 224,609 |
| Name the Constellations | 0 | - | 4.58 | 44,832 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,063 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,695 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,913 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,029 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,258 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,565 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,008 |
| International Scientific Units | 0 | - | 4.95 | 155,969 |
| First Names of Scientists | 0 | - | 4.50 | 56,625 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,456 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,230,065 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,895 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,482 |
| Name a Valid Element | 0 | - | 4.64 | 69,769 |
| Literary Quotes #1 | 0 | - | 4.49 | 33,485 |
| Star Wars Quotes | 0 | - | 4.83 | 174,151 |
| Random Countries Hidden in the World Map | 0 | - | 4.81 | 112,247 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,428 |
| Name a Country A-Z | 0 | - | 5.00 | 241,660 |
| Name a Disney/Pixar Movie A-Z | 0 | - | 4.84 | 51,156 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 120,769 |
| Birthstones by Month | 0 | - | 4.41 | 80,551 |
| Elements by Symbol | 0 | - | 4.92 | 196,258 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,087 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,694 |
| Noble Gases | 0 | - | 4.89 | 77,748 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,282 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,506 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,202 |
| Name the Virus | 0 | - | 4.86 | 76,513 |
| Solve the Secret Capital City | 0 | - | 4.80 | 163,137 |
| Add A Letter - Make a Capital City | 0 | - | 4.46 | 32,365 |
| Famous Lines of Poetry #1 | 0 | - | 4.55 | 34,205 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,485 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,748 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 28,034 |
| Books with Names in the Title #2 | 0 | - | 4.42 | 54,539 |
| Word Scramble - National Capitals | 0 | - | 4.19 | 485,894 |
| Name the 7 Dwarfs | 0 | - | 4.55 | 362,591 |
| Companies by Country | 0 | - | 4.61 | 118,985 |
| Groups of Things - The Bible | 0 | - | 4.43 | 55,091 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,007 |
| Word Chain - The Bible | 0 | - | 4.48 | 50,061 |
| U.S. Chain Restaurant Menu | 0 | - | 4.08 | 139,065 |
| Most Popular Fast Food Restaurants | 0 | - | 4.23 | 666,853 |
| World Countries by 10 Category Elimination #2 | 0 | - | 4.48 | 70,703 |
| Category Elimination - Countries #5 | 0 | - | 4.69 | 143,714 |
| Citrus Fruits | 0 | - | 3.63 | 41,986 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,751 |
| Elemental Words | 0 | - | 4.96 | 52,114 |
| Metals of Antiquity | 0 | - | 4.94 | 93,112 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,420 |
| The Mars Quiz | 0 | - | 4.55 | 18,606 |
| The Saturn Quiz | 0 | - | 4.54 | 11,529 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,603,096 |
| Popular Royal Names | 0 | - | 4.27 | 124,700 |
| First Names of Painters | 0 | - | 4.43 | 59,726 |
| Books with Animals in the Title #1 | 0 | - | 4.41 | 74,442 |
| Famous Lines of Poetry #2 | 0 | - | 4.55 | 18,463 |
| Character to Author #1 | 0 | - | 4.52 | 43,344 |
| Batfacts: The Batman Quiz | 0 | - | 4.49 | 60,551 |
| U.S. Synonymous Trademarks | 0 | - | 4.06 | 66,778 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,139 |
| Famous Scientists | 0 | - | 4.57 | 42,530 |
| Astronomy True or False | 0 | - | 4.39 | 36,345 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,261 |
| Books with Names in the Title #1 | 0 | - | 4.26 | 70,357 |
| First Names of Authors #1 | 0 | - | 4.20 | 59,087 |
| First Names of Authors #2 | 0 | - | 4.24 | 36,682 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,000 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,303 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,100 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,787 |
| Literary Quotes #2 | 0 | - | 4.18 | 24,329 |
| Sci-Fi Movie Quotes | 0 | - | 4.31 | 36,894 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 745,103 |
| Books by Country Quiz | 0 | - | 4.30 | 32,201 |
| Stores in the Mall #1 | 0 | - | 3.89 | 45,861 |
| Colors by Letter | 0 | - | 4.25 | 162,255 |
| Sibling Actors | 0 | - | 4.12 | 47,478 |
| Small Countries with Large Economies | 0 | - | 4.63 | 89,608 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,929 |
| Countries with Four Letters | 0 | - | 4.99 | 420,194 |
| Random Capital to Country | 0 | - | 4.99 | 2,583,846 |
| Random Country to Capital | 0 | - | 4.98 | 914,768 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,735 |
| Name a Valid World City | 0 | - | 4.83 | 70,568 |
| Category Elimination - Cities | 0 | - | 4.25 | 40,939 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 68,617 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,798 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,259 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,242 |
| Countries with NO Military | 0 | - | 4.97 | 61,561 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,374 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,151 |
| NATO Countries | 0 | - | 4.98 | 277,947 |
| EU Countries Quiz | 0 | - | 4.99 | 271,488 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,933 |
| Books of the Protestant Bible | 0 | - | 4.89 | 208,593 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,677 |
| The Venus Quiz | 0 | - | 4.21 | 6,901 |
| Scientific Names | 0 | - | 4.32 | 78,278 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,249 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,949 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 187,909 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,329 |
| Body Part Cliches | 0 | - | 4.43 | 123,181 |
| Bones of the Human Body | 0 | - | 4.52 | 41,519 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,568 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 715,862 |
| WWII First Names | 0 | - | 4.44 | 41,673 |
| Title in the Lyrics - Disney Songs | 0 | - | 4.36 | 129,274 |
| Movie Quotes A-Z #1 | 0 | - | 4.31 | 40,858 |
| Best-Selling Breakfast Cereals | 0 | - | 3.68 | 92,829 |
| Islands by Country #1 | 0 | - | 4.87 | 174,800 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,164 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,514 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,491 |
| Superhero Alter Egos | 0 | - | 4.29 | 164,361 |
| Who Did These Sidekicks Work With? | 0 | - | 4.25 | 109,942 |
| Disney Feature Films by Characters | 0 | - | 4.42 | 276,874 |
| Character to Author #2 | 0 | - | 4.55 | 30,354 |
| Superhero Decoder | 0 | - | 4.36 | 54,470 |
| Batman Actors Quiz | 0 | - | 4.27 | 47,911 |
| Marvel Superheroes | 0 | - | 4.37 | 295,814 |
| Marvel Comics Movie Franchises | 0 | - | 4.29 | 115,501 |
| Avengers Team Members | 0 | - | 4.07 | 77,306 |
| Marvel Cinematic Universe - Actor to Character | 0 | - | 4.11 | 112,798 |
| X-Men Mutants | 0 | - | 4.05 | 47,023 |
| The Spiderman Quiz | 0 | - | 4.31 | 72,354 |
| Car Model to Make | 0 | - | 4.18 | 195,906 |
| Famous Billionaires | 0 | - | 4.14 | 67,330 |
| Star Wars Characters Screen Time by Movie | 0 | - | 4.56 | 28,551 |
| Countries by Emojis | 0 | - | 4.99 | 237,713 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,913 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 170,024 |
| Cities by Wikipedia Descriptions #1 | 0 | - | 4.52 | 55,314 |
| Cities by Wikipedia Descriptions #3 | 0 | - | 4.58 | 47,653 |
| Cities that End in T by Clue | 0 | - | 4.70 | 17,171 |
| Cities that End in G by Clue | 0 | - | 4.60 | 21,431 |
| Parties (Mostly Political) | 0 | - | 4.14 | 20,344 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,422 |
| Country Chain | 0 | - | 4.96 | 216,380 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,930 |
| Capital Cities Chain | 0 | - | 4.84 | 82,230 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,299 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,351 |
| Category Elimination - Disney Animated Movies | 0 | - | 4.08 | 49,444 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,576 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,795 |
| Name a Valid Country #2 | 0 | - | 4.98 | 248,899 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,892 |
| Name a Valid Country #5 | 0 | - | 4.99 | 204,460 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,196 |
| Name a Valid Country #7 | 0 | - | 4.91 | 128,152 |
| Name a Valid Country #8 | 0 | - | 4.85 | 97,522 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,314 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,722 |
| Coldest World Capitals | 0 | - | 4.95 | 133,206 |
| World Currency Quiz | 0 | - | 4.92 | 300,381 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,878 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,696 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,075 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,418 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,074 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,232 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,458 |
| Buddhist Countries | 0 | - | 4.96 | 143,357 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,198 |
| Science General Knowledge #1 | 0 | - | 4.54 | 164,081 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,215 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,693 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,410 |
| Word Chain - Science | 0 | - | 4.59 | 54,600 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,544 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,423 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,128 |
| Environmental Issues | 0 | - | 4.54 | 26,772 |
