| Random Symbol to Element | 0 | - | 4.88 | 92,628 |
| Countries with Four Letters | 0 | - | 4.99 | 420,849 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,119 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,094,518 |
| Country Chain | 0 | - | 4.96 | 216,560 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,223 |
| International Scientific Units | 0 | - | 4.95 | 156,158 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,513 |
| Science General Knowledge #1 | 0 | - | 4.54 | 164,270 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,325 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,791 |
| Word Chain - Science | 0 | - | 4.59 | 54,660 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,242 |
| First Names of Scientists | 0 | - | 4.50 | 56,674 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,233,169 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,926 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,598 |
| Name a Valid Element | 0 | - | 4.64 | 69,832 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,378 |
| Largest World Cities With Five Letters | 0 | - | 4.53 | 66,708 |
| Groups of Two - Science | 0 | - | 4.26 | 48,230 |
| Science Decoder | 0 | - | 4.52 | 28,697 |
| Elements by Symbol | 0 | - | 4.92 | 196,485 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,257 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,771 |
| Noble Gases | 0 | - | 4.89 | 77,861 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,351 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,685 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,310 |
| Name the Virus | 0 | - | 4.86 | 76,573 |
| Body Part Words | 0 | - | 4.43 | 145,779 |
| Human Body A-Z | 0 | - | 4.51 | 128,935 |
| Super Short Movie Titles | 0 | - | 4.50 | 116,387 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,768 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,753 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,944 |
| Three Letter Acronyms #1 | 0 | - | 4.14 | 67,543 |
| Four-Letter Acronyms | 0 | - | 4.32 | 113,103 |
| Three-Letter Acronyms #2 | 0 | - | 4.23 | 46,361 |
| Four Letter African Geography | 0 | - | 4.67 | 18,956 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,294 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,241 |
| Famous Scientists | 0 | - | 4.57 | 42,553 |
| Citrus Fruits | 0 | - | 3.63 | 42,008 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,816 |
| Elemental Words | 0 | - | 4.96 | 52,164 |
| Metals of Antiquity | 0 | - | 4.94 | 93,199 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,490 |
| Astronomy Decoder | 0 | - | 4.50 | 37,961 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,286 |
| Best-Selling Video Game Consoles | 0 | - | 4.81 | 272,527 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,971 |
| Astronomy Quiz | 0 | - | 4.90 | 82,217 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,590 |
| Solar System Trivia | 0 | - | 4.93 | 46,385 |
| Body Parts - No Vowels | 0 | - | 4.13 | 25,235 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,751 |
| Italian Name Translation | 0 | - | 4.81 | 46,111 |
| Five Letter Movie Titles | 0 | - | 4.26 | 73,874 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 110,400 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,619 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,381 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,950 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 108,312 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,460 |
| Three Letter Animals Quiz | 0 | - | 3.96 | 300,702 |
| Three-Letter Acronyms #3 | 0 | - | 4.10 | 29,926 |
| One-Syllable Countries Quiz | 0 | - | 4.36 | 122,626 |
| One Syllable Team Names | 0 | - | 4.18 | 14,207 |
| 5-Letter Literature Chain | 0 | - | 4.29 | 54,720 |
| 4-Letter Literature Chain | 0 | - | 4.39 | 42,317 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 27,965 |
| 4-Letter Geography Chain #1 | 0 | - | 4.81 | 169,703 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,792 |
| Name a Valid World City | 0 | - | 4.83 | 70,752 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,859 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,979 |
| Scientific Names | 0 | - | 4.32 | 78,321 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,301 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,962 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 188,034 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,382 |
| Body Part Cliches | 0 | - | 4.43 | 123,215 |
| Bones of the Human Body | 0 | - | 4.52 | 41,795 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,909 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,760 |
| 7 Deadly Sins | 0 | - | 4.88 | 398,223 |
| Disney Animated Characters | 0 | - | 4.88 | 600,566 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,407 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,387 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,091 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.44 | 67,460 |
| Most Common Body Part Words | 0 | - | 3.90 | 31,601 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 717,184 |
| Fruits: No Vowels | 0 | - | 4.81 | 99,183 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 304,108 |
| Islands by Country #1 | 0 | - | 4.87 | 174,919 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,234 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,580 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,550 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 114,176 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,185 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,455 |
| 3 and 4 Letter Birds | 0 | - | 4.25 | 23,761 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,391 |
| Cold War Decoder | 0 | - | 4.83 | 52,173 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,868 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 49,851 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,084 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,998 |
| Name a Valid Country #1 | 0 | - | 4.99 | 287,607 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,452 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,392 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,567 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,563 |
| Name a Valid Country #7 | 0 | - | 4.91 | 128,466 |
| Name a Valid Country #8 | 0 | - | 4.85 | 97,833 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 75,046 |
| Name a Valid Country #10 | 0 | - | 4.93 | 42,399 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,336 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 45,706 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,446 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,096 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,582 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,445 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,506 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,820 |
| Environmental Issues | 0 | - | 4.54 | 26,785 |
| Chuck Norris Facts | 0 | - | 4.51 | 8,288 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,240 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,467 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.63 | 45,464 |
| "Son" Last Names | 0 | - | 4.47 | 42,008 |
| Shared First Names #2 | 0 | - | 4.53 | 45,185 |
| People with J Initials | 0 | - | 4.51 | 55,365 |
| History Analogies #1 | 0 | - | 4.53 | 89,881 |
| History Analogies #2 | 0 | - | 4.49 | 77,124 |
| History Analogies #3 | 0 | - | 4.61 | 80,564 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 195,157 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 61,904 |
| English Idioms #1 | 0 | - | 4.45 | 145,191 |
| Cliche Quotes Quiz #2 | 0 | - | 4.43 | 45,341 |
| Clothing Idioms | 0 | - | 4.41 | 34,148 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 320,960 |
| Are You a Nerd? | 0 | - | 4.35 | 44,728 |
| The Eleven Colors | 0 | - | 4.73 | 234,696 |
| Groups of Things - History #1 | 0 | - | 4.41 | 93,908 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,125 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,793 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 78,475 |
| The Only Country ... | 0 | - | 4.91 | 80,576 |
| King in the Answers | 0 | - | 4.42 | 49,875 |
| Super in the Answers | 0 | - | 4.52 | 109,724 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,252 |
| Five Letter Geography #3 | 0 | - | 4.61 | 131,054 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,500 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,541 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,613 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 72,314 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 37,925 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,509 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,802 |
| Three Letter Mammals Quiz | 0 | - | 3.69 | 11,862 |
| Four Letter Mammals Quiz | 0 | - | 3.83 | 12,535 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,366 |
| Five Letter Geography #4 | 0 | - | 4.78 | 84,768 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,509 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 123,509 |
| Random Countries by Borders | 0 | - | 4.99 | 82,111 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,505 |
| Random History by Country | 0 | - | 4.53 | 34,777 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,330 |
| Random Point on Land to Country | 0 | - | 4.99 | 233,188 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 51,686 |
| Geography Decoder | 0 | - | 4.53 | 75,508 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,527 |
| Letter A Geography Chain | 0 | - | 4.53 | 67,468 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,200 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,319 |
| Fruits by Picture | 0 | - | 4.19 | 806,184 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,342 |
| Answers are Beverages | 0 | - | 4.10 | 61,263 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,368 |
| Types of Food | 0 | - | 4.24 | 89,473 |
| The Foods they Ate | 0 | - | 4.03 | 69,373 |
| Animals Used in Food | 0 | - | 4.28 | 77,928 |
| Most Popular Fruits | 0 | - | 4.16 | 96,479 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,732 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 85,028 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,272 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,748 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,980 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,074 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,418 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,470 |
| Name a Valid Island Country | 0 | - | 4.96 | 114,584 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 57,382 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,603 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,811 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,245 |
