| Random Symbol to Element | 0 | - | 4.88 | 92,182 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,033 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 115,997 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,171 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,123 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,087,247 |
| Three Letter Body Parts | 0 | - | 4.39 | 204,859 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,675 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,230 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,090,308 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,056 |
| International Scientific Units | 0 | - | 4.95 | 155,214 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,125 |
| Science General Knowledge #1 | 0 | - | 4.54 | 163,372 |
| Science General Knowledge #2 | 0 | - | 4.47 | 116,581 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,147 |
| Word Chain - Science | 0 | - | 4.59 | 54,376 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 150,485 |
| The Sun Quiz | 0 | - | 4.93 | 34,080 |
| First Names of Scientists | 0 | - | 4.50 | 56,440 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,218,916 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,817 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 102,161 |
| Name a Valid Element | 0 | - | 4.64 | 69,546 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 214,496 |
| Word Scramble - Cities #1 | 0 | - | 4.50 | 98,954 |
| Groups of Two - Science | 0 | - | 4.26 | 48,128 |
| Science Decoder | 0 | - | 4.52 | 28,642 |
| Elements by Symbol | 0 | - | 4.92 | 195,373 |
| Speed Symbol by Element | 0 | - | 4.91 | 103,536 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,400 |
| Noble Gases | 0 | - | 4.89 | 77,390 |
| Elements that are Gases at Room Temperature | 0 | - | 4.85 | 64,008 |
| Periodic Table Symbols | 0 | - | 4.97 | 70,834 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 80,813 |
| Name the Virus | 0 | - | 4.86 | 76,200 |
| Body Part Words | 0 | - | 4.43 | 145,165 |
| Human Body A-Z | 0 | - | 4.51 | 128,289 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,691 |
| Animal Anatomy Quiz | 0 | - | 4.38 | 59,640 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,239 |
| Word Scramble - Colors | 0 | - | 4.20 | 77,551 |
| Word Scramble - Musical Instruments | 0 | - | 4.31 | 59,603 |
| Word Scramble - Deities | 0 | - | 4.55 | 10,298 |
| Christmas Word Scramble | 0 | - | 4.36 | 41,726 |
| Word Scramble - Cities #2 | 0 | - | 4.54 | 25,011 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 79,758 |
| Famous Scientists | 0 | - | 4.57 | 42,426 |
| Citrus Fruits | 0 | - | 3.65 | 41,944 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,556 |
| Elemental Words | 0 | - | 4.96 | 51,957 |
| Metals of Antiquity | 0 | - | 4.94 | 92,859 |
| Category Elimination - Elements | 0 | - | 4.62 | 53,204 |
| Astronomy Decoder | 0 | - | 4.50 | 37,828 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,150 |
| Best-Selling Video Game Consoles | 0 | - | 4.81 | 269,393 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,438 |
| Astronomy Quiz | 0 | - | 4.89 | 81,635 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 135,670 |
| Solar System Trivia | 0 | - | 4.93 | 45,974 |
| Body Parts - No Vowels | 0 | - | 4.15 | 25,060 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,585,926 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 109,870 |
| Word Scramble - Christmas | 0 | - | 3.88 | 35,757 |
| Halloween Scramble | 0 | - | 4.14 | 31,627 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 107,755 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,762 |
| 4-Letter Geography Chain #1 | 0 | - | 4.82 | 169,130 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,518 |
| Name a Valid World City | 0 | - | 4.83 | 70,068 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,747 |
| Scientific Names | 0 | - | 4.32 | 78,127 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,010 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,897 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.72 | 187,194 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,174 |
| Body Part Cliches | 0 | - | 4.43 | 122,976 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,049 |
| 7 Deadly Sins | 0 | - | 4.88 | 394,615 |
| Disney Animated Characters | 0 | - | 4.88 | 598,940 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,228 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,634 |
| Countries with Four Letters | 0 | - | 4.99 | 418,335 |
| Eight Most Popular Berries | 0 | - | 4.43 | 98,525 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.44 | 66,947 |
| Most Common Body Part Words | 0 | - | 3.90 | 31,498 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 711,062 |
| Word Scramble - Beers | 0 | - | 3.83 | 35,926 |
| Fruits: No Vowels | 0 | - | 4.81 | 98,455 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 302,596 |
| Islands by Country #1 | 0 | - | 4.87 | 174,444 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,875 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,247 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,314 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 113,596 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,237 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,369 |
| Country Chain | 0 | - | 4.96 | 215,639 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,668 |
| Cold War Decoder | 0 | - | 4.83 | 51,901 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,339 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 49,584 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,830 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,701 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,219 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,266 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,431 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,692 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,315 |
| Name a Valid Country #7 | 0 | - | 4.91 | 126,386 |
| Name a Valid Country #8 | 0 | - | 4.85 | 95,928 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 74,172 |
| Name a Valid Country #10 | 0 | - | 4.93 | 41,363 |
| Random Geographic Groups of Seven | 0 | - | 4.91 | 45,166 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,228 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,057 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,341 |
| Science Multiple Choice #2 | 0 | - | 4.40 | 36,320 |
| Science Multiple Choice #3 | 0 | - | 4.38 | 34,354 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,610 |
| Environmental Issues | 0 | - | 4.54 | 26,715 |
| Chuck Norris Facts | 0 | - | 4.50 | 8,029 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,007 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,380 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.64 | 45,087 |
| "Son" Last Names | 0 | - | 4.48 | 41,717 |
| Shared First Names #2 | 0 | - | 4.53 | 44,970 |
| People with J Initials | 0 | - | 4.51 | 55,206 |
| History Analogies #1 | 0 | - | 4.53 | 89,765 |
| History Analogies #2 | 0 | - | 4.49 | 76,984 |
| History Analogies #3 | 0 | - | 4.61 | 80,418 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 61,727 |
| English Idioms #1 | 0 | - | 4.45 | 144,237 |
| Cliche Quotes Quiz #2 | 0 | - | 4.43 | 45,223 |
| Clothing Idioms | 0 | - | 4.41 | 34,048 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,255 |
| Are You a Nerd? | 0 | - | 4.35 | 44,489 |
| The Eleven Colors | 0 | - | 4.73 | 233,229 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,377 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,415 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 77,097 |
| The Only Country ... | 0 | - | 4.91 | 79,806 |
| King in the Answers | 0 | - | 4.42 | 49,602 |
| Super in the Answers | 0 | - | 4.52 | 109,313 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,072 |
| Five Letter Geography #3 | 0 | - | 4.61 | 130,736 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,299 |
| Six Letter Geography #2 | 0 | - | 4.69 | 67,398 |
| Six Letter Geography #3 | 0 | - | 4.53 | 81,422 |
| Seven Letter Geography #1 | 0 | - | 4.52 | 71,966 |
| Seven Letter Geography #3 | 0 | - | 4.50 | 37,654 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,444 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,109 |
| Five Letter Geography #4 | 0 | - | 4.78 | 84,569 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,433 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 122,361 |
| Random Countries by Borders | 0 | - | 4.99 | 81,628 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 136,590 |
| Random History by Country | 0 | - | 4.53 | 34,647 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,137 |
| Random Point on Land to Country | 0 | - | 4.98 | 231,693 |
| Random Countries on a Topological Map | 0 | - | 4.90 | 51,172 |
| Geography Decoder | 0 | - | 4.53 | 75,332 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,370 |
| Letter A Geography Chain | 0 | - | 4.53 | 67,306 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,061 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,094 |
| Fruits by Picture | 0 | - | 4.20 | 804,476 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,145 |
| Answers are Beverages | 0 | - | 4.10 | 61,033 |
| Basic Cake Ingredients | 0 | - | 4.22 | 109,734 |
| Types of Food | 0 | - | 4.24 | 89,111 |
| The Foods they Ate | 0 | - | 4.03 | 69,181 |
| Animals Used in Food | 0 | - | 4.29 | 77,614 |
| Most Popular Fruits | 0 | - | 4.16 | 96,190 |
| Healthiest Fruits and Vegetables | 0 | - | 4.04 | 46,634 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 84,681 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,362 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,522 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,427 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,687 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,213 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,716 |
| Name a Valid Island Country | 0 | - | 4.96 | 114,001 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 56,779 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,352 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,639 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,150 |
| Animals - Taxonomy to Common Name | 0 | - | 4.79 | 28,089 |
| Elements by Picture | 0 | - | 4.28 | 69,520 |
| Medical Acronyms | 0 | - | 4.43 | 96,027 |
| Medical Vocabulary | 0 | - | 4.54 | 58,495 |
| Two Letter Answers #4 | 0 | - | 4.27 | 88,591 |
| Two Letter Answers #1 | 0 | - | 4.31 | 108,312 |
| Three Letter Answers #2 | 0 | - | 4.09 | 71,575 |
| Two Letter Answers #3 | 0 | - | 4.15 | 82,366 |
| Three Letter Answers #1 | 0 | - | 4.32 | 73,806 |
| Historical Middle Names | 0 | - | 4.16 | 35,368 |
| People with Food Names | 0 | - | 4.10 | 60,450 |
| First Names of Historical Figures #2 | 0 | - | 4.32 | 40,215 |
