| Random Symbol to Element | 0 | - | 4.88 | 92,644 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,094,689 |
| International Scientific Units | 0 | - | 4.95 | 156,192 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,527 |
| Science General Knowledge #1 | 0 | - | 4.54 | 164,295 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,340 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,805 |
| Word Chain - Science | 0 | - | 4.59 | 54,667 |
| The Sun Quiz | 0 | - | 4.93 | 34,400 |
| First Names of Scientists | 0 | - | 4.50 | 56,682 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,233,646 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,931 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 102,613 |
| Name a Valid Element | 0 | - | 4.64 | 69,846 |
| Medical Acronyms | 0 | - | 4.43 | 96,637 |
| Medical Vocabulary | 0 | - | 4.54 | 58,938 |
| Groups of Two - Science | 0 | - | 4.26 | 48,234 |
| Science Decoder | 0 | - | 4.52 | 28,698 |
| Elements by Symbol | 0 | - | 4.92 | 196,524 |
| Speed Symbol by Element | 0 | - | 4.91 | 104,294 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,783 |
| Noble Gases | 0 | - | 4.89 | 77,875 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,364 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,705 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,342 |
| Name the Virus | 0 | - | 4.86 | 76,580 |
| Body Part Words | 0 | - | 4.43 | 145,789 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.68 | 57,436 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,770 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,131 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,462 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,992 |
| Medical Specialties | 0 | - | 4.32 | 91,243 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 80,259 |
| Famous Scientists | 0 | - | 4.57 | 42,554 |
| Citrus Fruits | 0 | - | 3.63 | 42,009 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,833 |
| Elemental Words | 0 | - | 4.96 | 52,169 |
| Metals of Antiquity | 0 | - | 4.94 | 93,209 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,505 |
| Astronomy Decoder | 0 | - | 4.50 | 37,963 |
| The Diseases They Had | 0 | - | 4.15 | 13,972 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,295 |
| Best-Selling Video Game Consoles | 0 | - | 4.81 | 272,665 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,996 |
| Astronomy Quiz | 0 | - | 4.90 | 82,231 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,628 |
| Solar System Trivia | 0 | - | 4.93 | 46,400 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,879 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,608,566 |
| Italian Name Translation | 0 | - | 4.81 | 46,161 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 110,428 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,672 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,436 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,980 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 108,338 |
| April Fools' Quiz #1 | 0 | - | 3.84 | 59,767 |
| April Fools' Quiz #2 | 0 | - | 3.40 | 48,810 |
| Random General Knowledge - Countries | 0 | - | 4.33 | 88,616 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,490 |
| 4-Letter Geography Chain #1 | 0 | - | 4.81 | 169,722 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,802 |
| Name a Valid World City | 0 | - | 4.83 | 70,772 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,899 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,017 |
| Scientific Names | 0 | - | 4.32 | 78,328 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,306 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,963 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 188,074 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,392 |
| Body Part Cliches | 0 | - | 4.43 | 123,218 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,407 |
| Bones of the Human Body | 0 | - | 4.52 | 41,838 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,930 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,096,066 |
| 7 Deadly Sins | 0 | - | 4.88 | 398,299 |
| Disney Animated Characters | 0 | - | 4.88 | 600,630 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,411 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,450 |
| Countries with Four Letters | 0 | - | 4.99 | 420,947 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,113 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.44 | 67,482 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 717,411 |
| Fruits: No Vowels | 0 | - | 4.81 | 99,204 |
| European History for Dummies | 0 | - | 4.83 | 89,664 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 304,153 |
| Islands by Country #1 | 0 | - | 4.87 | 174,943 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,251 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,595 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,559 |
| Countries with Shortest Maximum Distances to the Ocean | 0 | - | 4.13 | 30,922 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 114,194 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,220 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,479 |
| Country Chain | 0 | - | 4.96 | 216,595 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,450 |
| Cold War Decoder | 0 | - | 4.83 | 52,185 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,890 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 49,860 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,177 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,074 |
| Name a Valid Country #1 | 0 | - | 4.99 | 287,745 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,537 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,483 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,716 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,608 |
| Name a Valid Country #7 | 0 | - | 4.91 | 128,518 |
| Name a Valid Country #8 | 0 | - | 4.85 | 97,884 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 75,079 |
| Name a Valid Country #10 | 0 | - | 4.93 | 42,431 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,339 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 45,724 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,227 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,459 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,101 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,591 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,449 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,510 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 151,253 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,830 |
| Environmental Issues | 0 | - | 4.54 | 26,786 |
| Chuck Norris Facts | 0 | - | 4.51 | 8,299 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,248 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,467 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.63 | 45,475 |
| "Son" Last Names | 0 | - | 4.47 | 42,013 |
| Shared First Names #2 | 0 | - | 4.53 | 45,192 |
| People with J Initials | 0 | - | 4.51 | 55,367 |
| History Analogies #1 | 0 | - | 4.53 | 89,886 |
| History Analogies #2 | 0 | - | 4.49 | 77,129 |
| History Analogies #3 | 0 | - | 4.61 | 80,571 |
| Movie Title Antonyms #1 | 0 | - | 4.81 | 195,175 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 61,911 |
| English Idioms #1 | 0 | - | 4.45 | 145,216 |
| Cliche Quotes Quiz #2 | 0 | - | 4.43 | 45,347 |
| Clothing Idioms | 0 | - | 4.41 | 34,149 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 321,005 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,500 |
| Are You a Nerd? | 0 | - | 4.35 | 44,737 |
| The Eleven Colors | 0 | - | 4.73 | 234,718 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,232 |
| MLS Soccer Teams | 0 | - | 4.23 | 84,343 |
| Groups of Things - History #1 | 0 | - | 4.41 | 93,921 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,319 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,813 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 78,543 |
| The Only Country ... | 0 | - | 4.91 | 80,595 |
| King in the Answers | 0 | - | 4.42 | 49,888 |
| Super in the Answers | 0 | - | 4.52 | 109,751 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,263 |
| Five Letter Geography #3 | 0 | - | 4.61 | 131,071 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,505 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,543 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,623 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 72,324 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 37,931 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,511 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,376 |
| Five Letter Geography #4 | 0 | - | 4.78 | 84,774 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,513 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 123,568 |
| Random Countries by Borders | 0 | - | 4.99 | 82,136 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,582 |
| Random History by Country | 0 | - | 4.53 | 34,782 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,370 |
| Random Point on Land to Country | 0 | - | 4.99 | 233,268 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 51,698 |
| Geography Decoder | 0 | - | 4.53 | 75,512 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,534 |
| Letter A Geography Chain | 0 | - | 4.53 | 67,471 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,204 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,324 |
| Fruits by Picture | 0 | - | 4.19 | 806,241 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,346 |
| Answers are Beverages | 0 | - | 4.10 | 61,268 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,378 |
| Types of Food | 0 | - | 4.24 | 89,479 |
| The Foods they Ate | 0 | - | 4.03 | 69,378 |
| Animals Used in Food | 0 | - | 4.28 | 77,943 |
| Most Popular Fruits | 0 | - | 4.16 | 96,487 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,732 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 85,040 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,306 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,753 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,030 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,120 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,454 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,508 |
| Name a Valid Island Country | 0 | - | 4.96 | 114,609 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 57,403 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,615 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,819 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,250 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,213 |
| Elements by Picture | 0 | - | 4.27 | 69,776 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,403 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,133 |
| Two Letter Answers #4 | 0 | - | 4.27 | 88,774 |
| Two Letter Answers #1 | 0 | - | 4.31 | 108,597 |
| Three Letter Answers #2 | 0 | - | 4.09 | 71,671 |
