| Name Every Beatles Song | 0 | - | 4.97 | 233,920 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,019 |
| Imagine Lyrics | 0 | - | 4.53 | 43,051 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,987 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,286 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,269 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,283 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,017 |
| Name a Valid African Country | 0 | - | 4.98 | 152,857 |
| States of Mexico | 0 | - | 4.95 | 173,173 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,182 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,461 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,087 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,837 |
| States of Brazil | 0 | - | 4.98 | 86,276 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,338 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,078 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,650,496 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,330 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,045 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,998 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,903 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,450 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,111 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,499 |
| First Lines of Beatles Songs | 0 | - | 4.36 | 46,573 |
| Beatles Songs by Synopsis | 0 | - | 4.31 | 32,666 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,616 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,483 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,981 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 294,076 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,608 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,445 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,809 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,820 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,305 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,618 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,138 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,843 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,565 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,449 |
| Mexican Foods | 0 | - | 4.07 | 14,606 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,965 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,682 |
| Viva la Vida Lyrics | 0 | - | 4.37 | 49,530 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,242 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,793 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,398 |
| Word Chain - Australia | 0 | - | 4.37 | 38,008 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,245 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,677 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,583 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,807 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,971 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,596 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,920 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,962 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,139 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,180 |
| German Groups of Things | 0 | - | 4.46 | 38,294 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,894 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,312 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,308 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,141 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,001 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,490 |
| Vietnam War Countries | 0 | - | 4.83 | 93,558 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 832,111 |
| Countries that Beat North Korea | 0 | - | 4.43 | 34,129 |
| Countries that Beat India | 0 | - | 4.41 | 62,561 |
| Countries of Africa | 0 | - | 5.00 | 2,505,713 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,400 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,661 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,297 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,757 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,534 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,503 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,184 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,454 |
| African East Coast | 0 | - | 4.96 | 94,971 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,981 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,844 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,315 |
| African Island Countries | 0 | - | 4.96 | 100,700 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,523 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,619 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,114 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,029 |
| Countries that Beat D.R. Congo | 0 | - | 4.74 | 41,494 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,783 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,971 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,742 |
| Australian States and Territories | 0 | - | 4.95 | 140,594 |
| Australian Capitals | 0 | - | 4.92 | 62,586 |
| Australian Immigration by Country | 0 | - | 4.81 | 76,997 |
| Australia Map Quiz | 0 | - | 4.94 | 342,330 |
| Australia True or False | 0 | - | 4.87 | 56,483 |
| Countries that Beat New Zealand | 0 | - | 4.69 | 26,153 |
| Flags of North and South America | 0 | - | 4.99 | 366,270 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,125 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,112 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,018 |
| History of Mexico | 0 | - | 4.58 | 15,224 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,648 |
| South American Physical Geography | 0 | - | 4.58 | 18,264 |
| Word Chain - South America | 0 | - | 4.51 | 23,758 |
| Countries that Beat Brazil | 0 | - | 4.49 | 67,835 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,596 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,593 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,573 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,867 |
| North America Map Quiz | 0 | - | 4.98 | 244,140 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,355 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,358 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,875 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,811 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,880 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,395 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,940 |
| Presidential Middle Names | 0 | - | 4.41 | 59,658 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,687 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,767 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,717 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,149 |
| The American Revolution | 0 | - | 4.52 | 54,041 |
| California Groups of Things | 0 | - | 4.25 | 45,257 |
| New York Groups of Things | 0 | - | 4.38 | 59,917 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,223 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,426 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,176 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,510 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,568 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,565 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,949 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,165 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,468 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,823 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,074 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,544 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,153 |
| Official European Union Languages | 0 | - | 4.97 | 236,413 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,633 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,382 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,500 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,413 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,629 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,231 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,154 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,427 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,967 |
| The Only European Country ... | 0 | - | 4.91 | 213,609 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,808 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,654 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,676 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,396 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,230 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,188 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,093 |
| Slavic Countries | 0 | - | 4.96 | 110,798 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,085 |
| Word Chain - France | 0 | - | 4.38 | 42,570 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,029 |
| Countries that Beat Greece | 0 | - | 4.52 | 48,565 |
| Italian Foods | 0 | - | 4.30 | 72,136 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,129 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,279 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,464 |
| Geography of Spain | 0 | - | 4.59 | 21,945 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,544 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,428 |
| British Groups of Things | 0 | - | 4.25 | 82,659 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,000 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,905 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,942 |
| Counties of England | 0 | - | 4.97 | 788,646 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,783 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,420 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,668 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,526 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,054 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,445 |
| Champions League Winners | 0 | - | 4.92 | 995,542 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,898 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,304 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,568 |
| Asia Map Quiz | 0 | - | 4.99 | 906,304 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,701 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,343 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,163 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,623 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,405 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,625 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,372 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,680 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,078 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,339 |
| Countries of the Middle East | 0 | - | 4.96 | 198,780 |
| Countries that Beat Saudi Arabia | 0 | - | 4.74 | 46,076 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,227 |
