| Groups of Two - Science | 0 | - | 4.26 | 48,438 |
| Random Symbol to Element | 0 | - | 4.88 | 93,729 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,898 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,860 |
| International Scientific Units | 0 | - | 4.95 | 158,149 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 63,210 |
| Random Geographic Groups of Seven | 0 | - | 4.92 | 46,684 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 115,254 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,773 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,193 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,101,520 |
| Science General Knowledge #1 | 0 | - | 4.54 | 167,183 |
| Science General Knowledge #2 | 0 | - | 4.48 | 119,571 |
| Science General Knowledge #3 | 0 | - | 4.56 | 109,483 |
| Word Chain - Science | 0 | - | 4.59 | 55,108 |
| Groups of Things - History #1 | 0 | - | 4.41 | 94,425 |
| Elements of the Periodic Table | 0 | - | 5.00 | 2,257,357 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,595 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,611 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 81,007 |
| First Names of Scientists | 0 | - | 4.51 | 57,166 |
| Science Decoder | 0 | - | 4.52 | 28,847 |
| Elements by Symbol | 0 | - | 4.92 | 198,422 |
| Speed Symbol by Element | 0 | - | 4.90 | 105,439 |
| Answers are Elements #2 | 0 | - | 4.43 | 55,181 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 94,693 |
| Noble Gases | 0 | - | 4.89 | 78,744 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,985 |
| Periodic Table Symbols | 0 | - | 4.97 | 79,176 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 82,293 |
| Periodic Table Elements A-Z | 0 | - | 4.77 | 103,379 |
| Name a Valid Element | 0 | - | 4.67 | 70,355 |
| Name the Virus | 0 | - | 4.87 | 77,054 |
| Groups of Things - Sports | 0 | - | 4.27 | 67,957 |
| Groups of Things - History #2 | 0 | - | 4.40 | 79,571 |
| History Groups of Two | 0 | - | 4.31 | 40,847 |
| Geographic Groups of Four #1 | 0 | - | 4.70 | 176,478 |
| Geographic Groups of Five #1 | 0 | - | 4.47 | 120,820 |
| Geographic Groups of Seven #1 | 0 | - | 4.63 | 141,699 |
| Geographic Groups of Two #2 | 0 | - | 4.64 | 115,575 |
| Geographic Groups of Six #2 | 0 | - | 4.53 | 53,487 |
| Geographic Groups of Two #3 | 0 | - | 4.46 | 84,432 |
| Geographic Groups of Four #2 | 0 | - | 4.77 | 81,144 |
| Geographic Groups of Five #2 | 0 | - | 4.74 | 64,236 |
| Geographic Groups of Three #2 | 0 | - | 4.55 | 70,183 |
| Geographic Groups of Two #4 | 0 | - | 4.45 | 78,649 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 81,065 |
| Famous Scientists | 0 | - | 4.57 | 42,822 |
| Citrus Fruits | 0 | - | 3.66 | 42,142 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 54,235 |
| Answers are Elements #1 | 0 | - | 4.29 | 52,944 |
| Elemental Words | 0 | - | 4.97 | 52,519 |
| Metals of Antiquity | 0 | - | 4.95 | 93,831 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 176,956 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,862 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 88,494 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,689 |
| Best-Selling Video Game Consoles | 0 | - | 4.82 | 277,376 |
| Musical Groups of Things | 0 | - | 4.37 | 31,304 |
| Geographic Groups of Three #1 | 0 | - | 4.35 | 96,908 |
| Geographic Groups of Six #1 | 0 | - | 4.27 | 92,991 |
| Geographic Groups of Eight | 0 | - | 4.39 | 58,928 |
| Geographic Groups of Seven #2 | 0 | - | 4.05 | 35,678 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,892 |
| Category Elimination - Elements | 0 | - | 4.61 | 54,024 |
| Astronomy Decoder | 0 | - | 4.48 | 38,184 |
| Five Biggest Immigrant Groups by Country #3 | 0 | - | 4.70 | 66,583 |
| Scientific Names | 0 | - | 4.32 | 78,697 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,758 |
| Random Geographic Groups of Six | 0 | - | 4.37 | 50,204 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,907 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 32,081 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 189,630 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,773 |
| Astronomy Quiz | 0 | - | 4.90 | 83,120 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 138,222 |
| Solar System Trivia | 0 | - | 4.93 | 47,043 |
| Body Part Cliches | 0 | - | 4.44 | 123,634 |
| Bones of the Human Body | 0 | - | 4.51 | 43,446 |
| Medical Conditions Quiz | 0 | - | 4.78 | 124,812 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,745 |
| Italian Name Translation | 0 | - | 4.83 | 47,771 |
| Songs that Start with the Same Word | 0 | - | 4.87 | 111,417 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,111,263 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,610 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,940 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,366 |
| 7 Deadly Sins | 0 | - | 4.88 | 403,142 |
| Geography Quiz for Dummies | 0 | - | 4.87 | 109,196 |
| Disney Animated Characters | 0 | - | 4.88 | 602,625 |
| Conspiracy Theories – Mostly U.S. | 0 | - | 4.44 | 56,676 |
| MLB Baseball Groups of Things | 0 | - | 4.11 | 18,609 |
| Literary Groups of Things | 0 | - | 4.27 | 30,714 |
| Top Five Languages by Language Family | 0 | - | 4.99 | 54,385 |
| Countries with Four Letters | 0 | - | 4.99 | 425,235 |
| 4-Letter Geography Chain #1 | 0 | - | 4.82 | 170,724 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,258 |
| Eight Most Popular Berries | 0 | - | 4.43 | 99,827 |
| Top 20 Fruits Sold in the U.S. | 0 | - | 4.45 | 68,253 |
| Name a Valid World City | 0 | - | 4.85 | 71,850 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,567 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,152 |
| Songs with Body Parts in the Title | 0 | - | 4.32 | 216,314 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,482 |
| Fruits: No Vowels | 0 | - | 4.81 | 100,343 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 306,338 |
| Islands by Country #1 | 0 | - | 4.90 | 176,186 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,130 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,455 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,316 |
| Groups of Two - Movies | 0 | - | 3.97 | 23,477 |
| Country Chain | 0 | - | 4.96 | 218,254 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 218,477 |
| Cold War Decoder | 0 | - | 4.83 | 52,586 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,808 |
| Name a Valid First-Level Subdivision for Every Country | 0 | - | 4.97 | 50,338 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,642 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,511 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,724 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,768 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,656 |
| Name a Valid Country #6 | 0 | - | 4.95 | 144,159 |
| Name a Valid Country #7 | 0 | - | 4.91 | 131,553 |
| Name a Valid Country #8 | 0 | - | 4.86 | 100,672 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 76,619 |
| Name a Valid Country #10 | 0 | - | 4.93 | 44,039 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,418 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,916 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,921 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,735 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 152,379 |
| Environmental Issues | 0 | - | 4.54 | 26,899 |
| Two Letter Answers #2 | 0 | - | 4.43 | 86,686 |
| One Letter Answers #1 | 0 | - | 4.47 | 77,622 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 739,630 |
| Chuck Norris Facts | 0 | - | 4.52 | 8,645 |
| People With Place Names | 0 | - | 4.01 | 39,830 |
| Guess a Top 5 Last Name by Country | 0 | - | 4.61 | 46,228 |
| Shared First Names #2 | 0 | - | 4.53 | 45,821 |
| People with J Initials | 0 | - | 4.51 | 55,579 |
| History Analogies #1 | 0 | - | 4.53 | 90,345 |
| History Analogies #2 | 0 | - | 4.49 | 77,465 |
| History Analogies #3 | 0 | - | 4.61 | 80,903 |
| English Idioms #1 | 0 | - | 4.45 | 146,348 |
| Cliche Quotes Quiz #2 | 0 | - | 4.42 | 45,522 |
| Clothing Idioms | 0 | - | 4.41 | 34,319 |
| Are You a Nerd? | 0 | - | 4.35 | 45,107 |
| The Eleven Colors | 0 | - | 4.74 | 235,831 |
| King in the Answers | 0 | - | 4.42 | 50,334 |
| Super in the Answers | 0 | - | 4.52 | 110,672 |
| Four Letter Geography #1 | 0 | - | 4.69 | 89,658 |
| Five Letter Geography #3 | 0 | - | 4.62 | 131,945 |
| Six Letter Geography #1 | 0 | - | 4.42 | 114,971 |
| Six Letter Geography #2 | 0 | - | 4.68 | 67,924 |
| Six Letter Geography #3 | 0 | - | 4.52 | 81,982 |
| Seven Letter Geography #1 | 0 | - | 4.48 | 79,855 |
| Seven Letter Geography #3 | 0 | - | 4.51 | 38,801 |
| Eight Letter Geography #1 | 0 | - | 4.45 | 38,710 |
| Five Letter Geography #1 | 0 | - | 4.48 | 151,992 |
| Five Letter Geography #4 | 0 | - | 4.78 | 85,208 |
| Five Letter Geography - Hero Mode | 0 | - | 4.63 | 35,699 |
| Random History by Country | 0 | - | 4.53 | 34,982 |
| Geography Decoder | 0 | - | 4.53 | 75,805 |
| Continental Geography Decoder | 0 | - | 4.46 | 52,805 |
| Letter A Geography Chain | 0 | - | 4.54 | 67,713 |
| 6-Letter Movie Chain #3 | 0 | - | 4.43 | 36,420 |
| Fruit & Vegetable Varieties Quiz | 0 | - | 4.30 | 58,582 |
| Fruits by Picture | 0 | - | 4.19 | 808,867 |
| Plants as Key Ingredient | 0 | - | 4.40 | 46,562 |
| Answers are Beverages | 0 | - | 4.06 | 61,529 |
| Basic Cake Ingredients | 0 | - | 4.23 | 110,641 |
| Types of Food | 0 | - | 4.25 | 90,260 |
| The Foods they Ate | 0 | - | 4.03 | 69,555 |
| Animals Used in Food | 0 | - | 4.28 | 78,372 |
| Most Popular Fruits | 0 | - | 4.16 | 96,895 |
| Healthiest Fruits and Vegetables | 0 | - | 4.02 | 46,887 |
| 10 Most Popular Pizza Toppings | 0 | - | 4.06 | 85,548 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 62,109 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,273 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,133 |
| Country Quiz on a Map - USA | 0 | - | 4.98 | 58,384 |
| Movie Title Antonyms #1 | 0 | - | 4.82 | 196,788 |
| Obfuscations of Movie Titles #1 | 0 | - | 4.93 | 62,287 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 323,953 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,423 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,969 |
| The Only Country ... | 0 | - | 4.91 | 81,751 |
| 20 Random Countries on an Empty World Map | 0 | - | 4.98 | 125,130 |
| Random Countries by Borders | 0 | - | 4.99 | 82,925 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 141,045 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,363 |
| Random Point on Land to Country | 0 | - | 4.99 | 236,808 |
| Random Countries on a Topological Map | 0 | - | 4.91 | 52,796 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,816 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,817 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,773 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,453 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,813 |
| Name a Valid Island Country | 0 | - | 4.97 | 128,577 |
| Science Vocabulary #1 | 0 | - | 4.34 | 72,132 |
