| International Scientific Units | 0 | - | 4.95 | 155,986 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,467 |
| Random Symbol to Element | 0 | - | 4.88 | 92,511 |
| Science General Knowledge #1 | 0 | - | 4.54 | 164,102 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,221 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,703 |
| Word Chain - Science | 0 | - | 4.59 | 54,606 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,230,411 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,093,732 |
| Elements by Symbol | 0 | - | 4.92 | 196,287 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,109 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,710 |
| Noble Gases | 0 | - | 4.89 | 77,761 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,291 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,520 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,214 |
| The Sun Quiz | 0 | - | 4.93 | 34,333 |
| Name the Virus | 0 | - | 4.86 | 76,525 |
| Groups of Two - Science | 0 | - | 4.26 | 48,209 |
| Science Decoder | 0 | - | 4.52 | 28,687 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,147 |
| Famous Scientists | 0 | - | 4.57 | 42,532 |
| First Names of Scientists | 0 | - | 4.50 | 56,630 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,898 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,491 |
| Name a Valid Element | 0 | - | 4.64 | 69,773 |
| Citrus Fruits | 0 | - | 3.63 | 41,991 |
| Scientific Names | 0 | - | 4.32 | 78,281 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,757 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,751 |
| Elemental Words | 0 | - | 4.96 | 52,120 |
| Metals of Antiquity | 0 | - | 4.94 | 93,125 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,047 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,436 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,934 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,261 |
| Best-Selling Video Game Consoles | 0 | - | 4.81 | 271,890 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,849 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,257 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,951 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 187,922 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,336 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,427 |
| Astronomy Decoder | 0 | - | 4.50 | 37,928 |
| Body Part Cliches | 0 | - | 4.43 | 123,185 |
| Bones of the Human Body | 0 | - | 4.52 | 41,544 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,702 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,370 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,012 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.44 | 67,368 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,091 |
| Astronomy Quiz | 0 | - | 4.90 | 82,111 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,403 |
| Solar System Trivia | 0 | - | 4.93 | 46,319 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,603,659 |
| Italian Name Translation | 0 | - | 4.81 | 45,890 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 110,288 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,339 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,135 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,805 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 108,201 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,277 |
| 4-Letter Geography Chain #1 | 0 | - | 4.81 | 169,599 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,743 |
| Name a Valid World City | 0 | - | 4.83 | 70,589 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,638 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,821 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,167 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,623 |
| Disney Animated Characters | 0 | - | 4.88 | 600,235 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,018 |
| Countries with Four Letters | 0 | - | 4.99 | 420,266 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,426 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,478 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,275 |
| Environmental Issues | 0 | - | 4.54 | 26,773 |
| Chuck Norris Facts | 0 | - | 4.51 | 8,226 |
| Are You a Nerd? | 0 | - | 4.35 | 44,676 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,294 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,328 |
| Answers are Beverages | 0 | - | 4.10 | 61,236 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,346 |
| Types of Food | 0 | - | 4.24 | 89,405 |
| The Foods they Ate | 0 | - | 4.03 | 69,344 |
| Animals Used in Food | 0 | - | 4.28 | 77,890 |
| Most Popular Fruits | 0 | - | 4.16 | 96,441 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,715 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 84,974 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,314 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,203 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,415 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,549 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,149 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 716,029 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,194 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,451 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.63 | 45,382 |
| "Son" Last Names | 0 | - | 4.47 | 41,946 |
| Shared First Names #2 | 0 | - | 4.53 | 45,137 |
| People with J Initials | 0 | - | 4.51 | 55,333 |
| History Analogies #1 | 0 | - | 4.53 | 89,851 |
| History Analogies #2 | 0 | - | 4.49 | 77,092 |
| History Analogies #3 | 0 | - | 4.61 | 80,534 |
| English Idioms #1 | 0 | - | 4.45 | 145,106 |
| Cliche Quotes Quiz #2 | 0 | - | 4.43 | 45,314 |
| Clothing Idioms | 0 | - | 4.41 | 34,110 |
| Fruits: No Vowels | 0 | - | 4.81 | 99,053 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 303,840 |
| Islands by Country #1 | 0 | - | 4.87 | 174,812 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,172 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,516 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,495 |
| The Eleven Colors | 0 | - | 4.73 | 234,563 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 113,999 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,972 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 170,192 |
| King in the Answers | 0 | - | 4.42 | 49,774 |
| Super in the Answers | 0 | - | 4.52 | 109,592 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,220 |
| Five Letter Geography #3 | 0 | - | 4.61 | 130,987 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,454 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,517 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,579 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 72,252 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 37,861 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,498 |
| Country Chain | 0 | - | 4.96 | 216,393 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,310 |
| Five Letter Geography #4 | 0 | - | 4.78 | 84,737 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,488 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,959 |
| Random History by Country | 0 | - | 4.53 | 34,736 |
| Geography Decoder | 0 | - | 4.53 | 75,473 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,496 |
| Cold War Decoder | 0 | - | 4.83 | 52,113 |
| Letter A Geography Chain | 0 | - | 4.53 | 67,438 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,180 |
| Fruits by Picture | 0 | - | 4.20 | 805,857 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,753 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,709 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 49,779 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,594 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,634 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,894 |
| Name a Valid Country #2 | 0 | - | 4.98 | 248,965 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,957 |
| Name a Valid Country #5 | 0 | - | 4.99 | 204,630 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,246 |
| Name a Valid Country #7 | 0 | - | 4.91 | 128,199 |
| Name a Valid Country #8 | 0 | - | 4.85 | 97,563 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 74,878 |
| Name a Valid Country #10 | 0 | - | 4.93 | 42,224 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 45,540 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,784 |
| People With Place Names | 0 | - | 4.00 | 39,560 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 195,016 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 61,871 |
| Dr. Seuss Quotes | 0 | - | 4.38 | 9,051 |
| 40 Completely Random Quotes | 0 | - | 4.40 | 29,138 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 320,682 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,880 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,688 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 78,202 |
| The Only Country ... | 0 | - | 4.91 | 80,424 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 123,329 |
| Random Countries by Borders | 0 | - | 4.99 | 81,939 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,187 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,074 |
| Random Point on Land to Country | 0 | - | 4.99 | 232,896 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 51,572 |
| Most Popular Herbs and Spices | 0 | - | 3.94 | 75,749 |
| U.S. Supermarket Products | 0 | - | 3.85 | 59,509 |
| Jelly Belly Official 50 Flavors | 0 | - | 4.19 | 19,677 |
| Types of Jam | 0 | - | 3.78 | 35,248 |
| Most Popular Types of Tea | 0 | - | 4.02 | 11,030 |
| Coffee Knowledge | 0 | - | 4.17 | 18,773 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,055 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,641 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,774 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,168 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,321 |
| Name a Valid Island Country | 0 | - | 4.96 | 114,458 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 57,265 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,564 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,779 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,230 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,187 |
| Elements by Picture | 0 | - | 4.27 | 69,733 |
| Medical Acronyms | 0 | - | 4.43 | 96,540 |
| Medical Vocabulary | 0 | - | 4.54 | 58,865 |
| Two Letter Answers #4 | 0 | - | 4.27 | 88,731 |
| Two Letter Answers #1 | 0 | - | 4.31 | 108,541 |
| Three Letter Answers #2 | 0 | - | 4.09 | 71,645 |
| Two Letter Answers #3 | 0 | - | 4.15 | 82,523 |
| Three Letter Answers #1 | 0 | - | 4.32 | 73,907 |
| Historical Middle Names | 0 | - | 4.16 | 35,580 |
| People with Food Names | 0 | - | 4.10 | 60,757 |
| First Names of Historical Figures #2 | 0 | - | 4.32 | 40,395 |
| Translations of John | 0 | - | 4.53 | 26,971 |
| First Names of Historical Figures #1 | 0 | - | 4.39 | 228,962 |
