| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,023 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,357 |
| Pixelated United States Map | 0 | - | 4.88 | 94,657 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,230 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,170 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,146 |
| Vietnam War Countries | 0 | - | 4.82 | 94,505 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,918 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,196 |
| Flags of North and South America | 0 | - | 4.99 | 375,906 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,925 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,195 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,087 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,432 |
| Presidential Middle Names | 0 | - | 4.41 | 60,608 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,571 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,812 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,579 |
| California A-Z | 0 | - | 4.49 | 28,828 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,552,350 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,050 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,295 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,667 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,923 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,322 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,826 |
| Africa Map with Random Merged Countries | 0 | - | 4.94 | 74,195 |
| Flags of Oceania | 0 | - | 5.00 | 261,874 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,772 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,611 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,811 |
| U.S. Senators by State | 0 | - | 4.44 | 40,066 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,150 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,452 |
| The American Revolution | 0 | - | 4.52 | 54,326 |
| States that Beat California | 0 | - | 4.54 | 63,803 |
| Which City in California? | 0 | - | 4.56 | 32,136 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,127 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,789 |
| States that Beat New York | 0 | - | 4.50 | 45,214 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,176 |
| States that Beat Texas | 0 | - | 4.58 | 44,465 |
| US States Quiz | 0 | - | 5.00 | 16,963,237 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,274 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,214 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,282 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,641 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,288 |
| 20 Random Country Flags | 0 | - | 4.99 | 617,131 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,294 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,340 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,167 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,297 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,820 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,580 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,281 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,250 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,050 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,782 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,331 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,724 |
| First Ladies of the United States | 0 | - | 4.28 | 85,867 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,282 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,389 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,319 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,067 |
| California Cities Map Quiz | 0 | - | 4.50 | 88,120 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,973 |
| Harvard University | 0 | - | 4.15 | 8,318 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,568 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,325 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,598 |
| Cities that Beat New York | 0 | - | 4.51 | 28,789 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,122 |
| Biggest Cities in Pennsylvania | 0 | - | 4.13 | 45,501 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,573 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,809 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,396,912 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,032 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,047 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,697 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,057 |
| U.S. States By Population | 0 | - | 4.92 | 153,972 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,002 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,764 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,953 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,728 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,451 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,962 |
| U.S. State Birds | 0 | - | 4.31 | 21,477 |
| U.S. States by Alternate Nicknames | 0 | - | 4.24 | 42,971 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,514 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,082 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,570 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,762 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,564 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,897 |
| Flags of the Mediterranean | 0 | - | 4.94 | 149,118 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,946 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 70,174 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,914 |
| Countries with Four Letters - Shape Quiz | 0 | - | 4.97 | 101,819 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 8,375,530 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,331 |
| Rivers of the United States | 0 | - | 4.93 | 66,544 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,984 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,340 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,032 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,034 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,918 |
| California by Picture | 0 | - | 4.36 | 16,577 |
| California... or Florida? | 0 | - | 4.60 | 51,763 |
| Golden State Warriors Trivia | 0 | - | 4.25 | 25,027 |
| Los Angeles Lakers Trivia | 0 | - | 4.15 | 26,722 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 72,612 |
| States that Beat Florida | 0 | - | 4.32 | 40,951 |
| Which City in Florida? | 0 | - | 4.61 | 11,019 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,463 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,924 |
| Boston Celtics Trivia | 0 | - | 4.12 | 15,148 |
| New York Counties | 0 | - | 4.65 | 50,989 |
| New York City by Picture | 0 | - | 4.37 | 27,939 |
| Texas Counties | 0 | - | 4.56 | 77,673 |
| Which City in Texas? | 0 | - | 4.45 | 25,146 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 35,203 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 36,394 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,337 |
| U.S. States by Emoji | 0 | - | 4.48 | 101,242 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,122 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,122 |
| US States with an Empty Map | 0 | - | 5.00 | 627,522 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,955 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,306 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,223 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,674 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,692 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,313 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,661 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,291 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,928 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,144 |
| Merged U.S. States | 0 | - | 4.37 | 44,358 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,795 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,909 |
| Random European Flag to Country | 0 | - | 4.90 | 183,851 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,102 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,372 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,032 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,232 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,935 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,998 |
| The Iraq War | 0 | - | 4.47 | 15,691 |
| Countries that Beat China | 0 | - | 4.85 | 116,522 |
| Random African Flag to Country | 0 | - | 4.88 | 75,439 |
| Random Sequential Countries on the World Map | 0 | - | 5.00 | 525,059 |
| Random Countries on the World Map | 0 | - | 5.00 | 1,556,507 |
| Random Countries on the Borderless World Map | 0 | - | 4.99 | 185,330 |
| Countries in Random Rings of the World Map | 0 | - | 4.99 | 87,469 |
| Countries in Squares of the World Map | 0 | - | 5.00 | 185,221 |
| Countries in Random Squares of the World Map | 0 | - | 4.99 | 339,126 |
| Random Country Shape to Country | 0 | - | 4.90 | 114,836 |
| World Map with Random Merged Countries | 0 | - | 4.99 | 1,726,791 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 143,280 |
| Random American Countries on a Map | 0 | - | 4.96 | 100,020 |
| South America Flags Map Quiz | 0 | - | 4.95 | 88,688 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 221,831 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,679 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,250 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,553 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,981 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,138 |
| The George Washington Presidency | 0 | - | 4.03 | 14,590 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,765 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,725 |
| The John Adams Presidency | 0 | - | 4.12 | 8,772 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,972 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,762 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,362 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,741 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,899 |
| Free in the Answers | 0 | - | 4.08 | 51,679 |
| California Counties Map Quiz | 0 | - | 4.36 | 34,583 |
| Hawaiian Islands | 0 | - | 4.83 | 42,864 |
| Michigan Cities Map Quiz | 0 | - | 4.45 | 21,136 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,251 |
| Texas Cities Map Quiz | 0 | - | 4.38 | 81,628 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,462 |
| Washington D.C. by Picture | 0 | - | 4.49 | 26,835 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,326 |
| U.S. State Flags | 0 | - | 4.89 | 172,201 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,225 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,356 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,513 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,624 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,211 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,710 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,083 |
| UK Baby Girl Names by Decade | 0 | - | 4.38 | 161,448 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 132,906 |
| The Persian Gulf War | 0 | - | 4.02 | 8,472 |
