| U.S. Presidents Quiz | 0 | - | 5.00 | 3,723,542 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,949 |
| Random American Countries on a Map | 0 | - | 4.96 | 100,149 |
| Click a Valid US State A-Z | 0 | - | 4.91 | 119,156 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,568 |
| Africa Map with Random Merged Countries | 0 | - | 4.94 | 74,338 |
| Flags of North and South America | 0 | - | 4.99 | 376,602 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 193,670 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,290 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,256,643 |
| Flags of Asia Quiz | 0 | - | 4.99 | 619,633 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,972 |
| Flags of Oceania | 0 | - | 5.00 | 262,409 |
| Flags of the Mediterranean | 0 | - | 4.94 | 149,276 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,476 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,411 |
| Lord of the Rings Characters | 0 | - | 4.54 | 113,628 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,724 |
| Vietnam War Countries | 0 | - | 4.82 | 94,572 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,402 |
| 20 Random Country Flags | 0 | - | 4.99 | 618,292 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,395 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,846 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,252 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,130 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,313 |
| Countries that Beat China | 0 | - | 4.85 | 116,679 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 172,635 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 143,480 |
| South America Flags Map Quiz | 0 | - | 4.95 | 88,857 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,257 |
| U.S. Senators by State | 0 | - | 4.44 | 40,097 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,489 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,268 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,583 |
| Presidential Middle Names | 0 | - | 4.41 | 60,694 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,660 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,877 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,183 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,617 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,546 |
| The American Revolution | 0 | - | 4.52 | 54,348 |
| Which City in California? | 0 | - | 4.56 | 32,145 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,561 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,554,459 |
| Fictional Characters by U.S. State | 0 | - | 4.17 | 12,138 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,529 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,434 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,340 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,499 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,938 |
| Random U.S. States Mouse Hunt! | 0 | - | 4.95 | 194,858 |
| U.S. State Birds | 0 | - | 4.31 | 21,504 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,965 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,358 |
| Random European Flag to Country | 0 | - | 4.90 | 184,086 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 48,244 |
| Doctor Who Actors | 0 | - | 4.61 | 17,987 |
| Sherlock Holmes Quiz | 0 | - | 4.49 | 26,721 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 170,881 |
| Countries that Beat Egypt | 0 | - | 4.91 | 66,984 |
| Random African Countries on a Map | 0 | - | 4.99 | 297,714 |
| Random African Flag to Country | 0 | - | 4.88 | 75,585 |
| Random Sequential Countries on the World Map | 0 | - | 5.00 | 525,895 |
| Random Sequential Countries on the World Map - Hard Version | 0 | - | 5.00 | 76,428 |
| U.S. Presidents Who Added the Most Territory | 0 | - | 4.66 | 14,231 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,762 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,933 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,358 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,760 |
| First Ladies of the United States | 0 | - | 4.28 | 85,927 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.42 | 24,059 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,306 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,451 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,355 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,089 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 58,100 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,073 |
| California A-Z | 0 | - | 4.49 | 28,839 |
| Which City in Florida? | 0 | - | 4.61 | 11,029 |
| Which City in New York State? | 0 | - | 4.60 | 16,053 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,142 |
| Which City in Texas? | 0 | - | 4.45 | 25,153 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,397,879 |
| U.S. States That Beat Canada | 0 | - | 4.23 | 39,875 |
| Merged U.S. States | 0 | - | 4.37 | 44,401 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,936 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,414 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,281 |
| Cross Flags of Europe | 0 | - | 4.43 | 300,330 |
| Satellite Images - Europe | 0 | - | 4.47 | 105,145 |
| European Cities by Picture #2 | 0 | - | 4.46 | 38,399 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,395 |
| Flags of the Middle East | 0 | - | 4.69 | 62,810 |
| The Iraq War | 0 | - | 4.47 | 15,701 |
| Chinese Zodiac Quiz | 0 | - | 4.80 | 140,049 |
| All Country Flags of the World | 0 | - | 5.00 | 3,708,995 |
| Game of Thrones Characters by Screen Time | 0 | - | 4.61 | 92,285 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,827 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,404 |
| Australian Capitals | 0 | - | 4.92 | 62,825 |
| Australia Map Quiz | 0 | - | 4.95 | 346,041 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,405 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,037 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,030,573 |
| Most Guessed North American Teams by Sport | 0 | - | 4.28 | 65,044 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,368 |
| The George Washington Presidency | 0 | - | 4.03 | 14,604 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,776 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,748 |
| The John Adams Presidency | 0 | - | 4.12 | 8,787 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,982 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,773 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,373 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,753 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,923 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 29,022 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,175 |
| Harvard University | 0 | - | 4.15 | 8,322 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,577 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,951 |
| Boston Celtics Trivia | 0 | - | 4.12 | 15,171 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,265 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 35,234 |
| It's Always Sunny in Philadelphia Quiz | 0 | - | 4.34 | 15,916 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 36,430 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,334 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,390 |
| U.S. States by Emoji | 0 | - | 4.48 | 101,317 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,146 |
| Random U.S. Sports Team to State | 0 | - | 4.33 | 27,720 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,372 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,273 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,691 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,719 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,887 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,855 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,306 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 35,189 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,792 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,886 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,622 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,678 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,081 |
| Official European Union Languages | 0 | - | 4.97 | 239,677 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,575 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,069 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,283 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,988 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,645 |
| The Only European Country ... | 0 | - | 4.91 | 218,787 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,407 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,441 |
| Countries that Beat France | 0 | - | 4.48 | 76,322 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,979 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,304 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,039 |
| Counties of England | 0 | - | 4.97 | 802,343 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 70,261 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,926 |
| British Geography Quiz #1 | 0 | - | 4.55 | 54,183 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,045 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,051 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,191 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,077 |
| Asia Map Quiz | 0 | - | 4.99 | 924,479 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,557 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,866 |
| Random Asian Flag to Country | 0 | - | 4.70 | 114,019 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,943 |
| The Persian Gulf War | 0 | - | 4.02 | 8,480 |
| Countries of Africa | 0 | - | 5.00 | 2,557,568 |
| Africa Map Quiz | 0 | - | 5.00 | 2,127,789 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,777 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,253 |
| African East Coast | 0 | - | 4.96 | 96,694 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,551 |
| Canada or Africa by Area | 0 | - | 4.78 | 18,549 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,497 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,767 |
| Empires by Maps | 0 | - | 4.98 | 121,902 |
| MCU Actors by Picture | 0 | - | 4.45 | 84,797 |
| Countries by Road Signs | 0 | - | 4.98 | 54,307 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 62,059 |
| Flags with Crescents | 0 | - | 4.98 | 171,207 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,545,149 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,785 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,157 |
| Country Flag Trivia | 0 | - | 4.81 | 57,922 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 104,813 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 78,351 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 77,627 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 88,496 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,881 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,916 |
| Name a Valid Country Flag | 0 | - | 4.70 | 76,937 |
| Category Elimination - Country Flags #2 | 0 | - | 4.57 | 61,994 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.81 | 53,430 |
| National Football Team Logos | 0 | - | 4.85 | 181,717 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,297 |
