| U.S. Presidents Quiz | 0 | - | 5.00 | 3,712,948 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,878 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,650 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,933 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,108 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,331 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,007 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,882 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,287 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,697 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,371 |
| Vietnam War Countries | 0 | - | 4.82 | 94,424 |
| Name a Valid African Country | 0 | - | 4.98 | 154,553 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,120 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,003 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,376 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,492 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,725 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,557 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,186 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,943 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,458 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,860 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,307 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,733 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,611 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,150 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,175 |
| Countries that Beat China | 0 | - | 4.85 | 116,258 |
| South America Flags Map Quiz | 0 | - | 4.95 | 88,480 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,190 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,032 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,864 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,242 |
| Presidential Middle Names | 0 | - | 4.41 | 60,503 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,509 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,731 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,093 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,528 |
| The American Revolution | 0 | - | 4.52 | 54,302 |
| Fictional Characters by U.S. State | 0 | - | 4.17 | 12,127 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,700 |
| Which City in Canada? | 0 | - | 4.83 | 57,200 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,046 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,291 |
| Countries that Beat Egypt | 0 | - | 4.88 | 57,173 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,879 |
| Cities by Wikipedia Descriptions #2 | 0 | - | 4.53 | 39,094 |
| U.S. Cities by Wikipedia Descriptions | 0 | - | 4.48 | 34,234 |
| U.S. Senators by State | 0 | - | 4.44 | 40,020 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,627 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,303 |
| First Ladies of the United States | 0 | - | 4.28 | 85,793 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,003 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,259 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,321 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,271 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,312 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,031 |
| Which City in California? | 0 | - | 4.56 | 32,101 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,513 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,103 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,547,492 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,672 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,807 |
| U.S. State Birds | 0 | - | 4.31 | 21,452 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,879 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,322 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,055 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,466 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,539 |
| Lord of the Rings Characters | 0 | - | 4.54 | 113,497 |
| The Iraq War | 0 | - | 4.47 | 15,680 |
| Kardashian Family Members by Picture | 0 | - | 2.21 | 34,448 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,477 |
| Countries that Beat D.R. Congo | 0 | - | 4.77 | 41,907 |
| Oceania Map Quiz | 0 | - | 4.98 | 656,319 |
| Australian Capitals | 0 | - | 4.92 | 62,780 |
| Most Guessed North American Teams by Sport | 0 | - | 4.28 | 64,825 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,631 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,259 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,691 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,756 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,696 |
| The John Adams Presidency | 0 | - | 4.12 | 8,766 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,752 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,876 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,985 |
| California A-Z | 0 | - | 4.49 | 28,816 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,056 |
| Which City in Florida? | 0 | - | 4.61 | 11,007 |
| Harvard University | 0 | - | 4.15 | 8,312 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,239 |
| Which City in Texas? | 0 | - | 4.45 | 25,126 |
| It's Always Sunny in Philadelphia Quiz | 0 | - | 4.34 | 15,882 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,395,237 |
| Merged U.S. States | 0 | - | 4.37 | 44,288 |
| O Canada Lyrics | 0 | - | 4.47 | 50,997 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,737 |
| Canada Country Quiz | 0 | - | 4.54 | 132,768 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,422 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,431 |
| Official European Union Languages | 0 | - | 4.97 | 239,156 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,268 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,631 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,119 |
| Countries that Beat France | 0 | - | 4.49 | 76,087 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,103 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,347 |
| Italian Foods | 0 | - | 4.30 | 73,029 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,432 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,255 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,798 |
| British Geography Quiz #1 | 0 | - | 4.55 | 53,523 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,979 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,244 |
| Asia Map Quiz | 0 | - | 4.99 | 921,235 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,961 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,871 |
| Countries that Beat Saudi Arabia | 0 | - | 4.74 | 46,493 |
| Chinese Zodiac Quiz | 0 | - | 4.80 | 139,842 |
| Countries that Beat Japan | 0 | - | 4.41 | 68,183 |
| Countries that Beat India | 0 | - | 4.42 | 63,151 |
| Africa Map Quiz | 0 | - | 5.00 | 2,123,522 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,796 |
| Game of Thrones Characters by Screen Time | 0 | - | 4.61 | 92,062 |
| Batman Characters by Screen Time | 0 | - | 4.10 | 30,570 |
| Disney Feature Films by Characters | 0 | - | 4.42 | 277,627 |
| Flags of Oceania | 0 | - | 5.00 | 261,051 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,061 |
| Australian States and Territories | 0 | - | 4.96 | 142,390 |
| Australia Cities Map Quiz | 0 | - | 4.82 | 146,095 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,397 |
| Australia Map Quiz | 0 | - | 4.95 | 345,463 |
| Australia True or False | 0 | - | 4.87 | 57,006 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,776 |
| Countries that Beat New Zealand | 0 | - | 4.70 | 26,577 |
| Flags of North and South America | 0 | - | 4.99 | 374,967 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,785 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,520 |
| The Only American Country ... | 0 | - | 4.92 | 121,913 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,374 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,245 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,657 |
| Countries that Beat Brazil | 0 | - | 4.49 | 68,915 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,663 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,254 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,027,161 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,331 |
| North America Map Quiz | 0 | - | 4.98 | 249,908 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,937 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,517 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,674 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,255 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,845 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,694 |
| Names of Generations | 0 | - | 4.09 | 45,285 |
| The George Washington Presidency | 0 | - | 4.03 | 14,575 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,955 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,342 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,721 |
| Free in the Answers | 0 | - | 4.08 | 51,647 |
| States that Beat California | 0 | - | 4.54 | 63,742 |
| Golden State Warriors Trivia | 0 | - | 4.25 | 24,989 |
| Los Angeles Lakers Trivia | 0 | - | 4.15 | 26,681 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,561 |
| Top 10 Boston Red Sox of All-Time | 0 | - | 4.02 | 11,892 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,563 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,884 |
| Boston Celtics Trivia | 0 | - | 4.12 | 15,114 |
| States that Beat New York | 0 | - | 4.50 | 45,148 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,096 |
| States that Beat Texas | 0 | - | 4.58 | 44,424 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 35,158 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 36,320 |
| American History Quotes #1 | 0 | - | 4.37 | 96,127 |
| American History Quotes #2 | 0 | - | 4.38 | 41,465 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,295 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,310 |
| US States Quiz | 0 | - | 5.00 | 16,937,424 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,266 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,085 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,989 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,209 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,143 |
| Random Point on Land to US State | 0 | - | 4.63 | 69,536 |
| Movies by State | 0 | - | 4.27 | 40,578 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,655 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,350 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 35,113 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,380 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,440 |
| Ontario Cities Map Quiz | 0 | - | 4.64 | 19,507 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,076 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,288 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,784 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,011 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,099 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,701 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,455 |
