| U.S. Presidents Quiz | 0 | - | 5.00 | 3,668,254 |
| Africa Map with Random Merged Countries | 0 | - | 4.95 | 72,880 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,917 |
| Click a Valid US State A-Z | 0 | - | 4.90 | 115,569 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,689 |
| Flags of Africa Quiz | 0 | - | 5.00 | 465,753 |
| Flags of North and South America | 0 | - | 4.99 | 369,299 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,436 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,708 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,232,226 |
| Flags of Asia Quiz | 0 | - | 4.99 | 607,901 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,306 |
| Flags of Oceania | 0 | - | 5.00 | 256,426 |
| Flags of the Mediterranean | 0 | - | 4.94 | 147,817 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,302 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,112 |
| Lord of the Rings Characters | 0 | - | 4.54 | 112,808 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,666 |
| Vietnam War Countries | 0 | - | 4.83 | 93,811 |
| 20 Random Country Flags | 0 | - | 4.99 | 607,208 |
| Countries that Beat Australia | 0 | - | 4.92 | 92,307 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,431 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,708 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,704 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,064 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,607 |
| Countries that Beat China | 0 | - | 4.86 | 115,043 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 170,342 |
| Category Elimination - Country Flags #1 | 0 | - | 4.96 | 141,766 |
| Random African Countries on a Map | 0 | - | 4.99 | 294,384 |
| Random African Flag to Country | 0 | - | 4.88 | 74,417 |
| South America Flags Map Quiz | 0 | - | 4.95 | 87,031 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,940 |
| U.S. Senators by State | 0 | - | 4.45 | 39,820 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,170 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,790 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,224 |
| Presidential Middle Names | 0 | - | 4.41 | 59,857 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,907 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,050 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,819 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,239 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,597 |
| The American Revolution | 0 | - | 4.52 | 54,122 |
| Which City in California? | 0 | - | 4.56 | 31,948 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,279 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,524,399 |
| Fictional Characters by U.S. State | 0 | - | 4.17 | 12,080 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,298 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,341 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,244 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,049 |
| Random U.S. States on a Map | 0 | - | 4.96 | 623,028 |
| U.S. State Birds | 0 | - | 4.31 | 21,356 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,457 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 316,471 |
| Random European Flag to Country | 0 | - | 4.89 | 181,355 |
| U.S. States Closest to Moscow | 0 | - | 4.50 | 47,881 |
| Doctor Who Actors | 0 | - | 4.61 | 17,873 |
| Sherlock Holmes Quiz | 0 | - | 4.49 | 26,596 |
| Random Asian Countries on a Map | 0 | - | 4.90 | 169,152 |
| Countries that Beat Egypt | 0 | - | 4.88 | 56,718 |
| Random Sequential Countries on the World Map | 0 | - | 5.00 | 519,688 |
| Random Sequential Countries on the World Map - Hard Version | 0 | - | 5.00 | 74,933 |
| U.S. Presidents Who Added the Most Territory | 0 | - | 4.66 | 13,989 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,451 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,188 |
| First Ladies of the United States | 0 | - | 4.28 | 85,336 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,849 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,145 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,579 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,053 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,866 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,754 |
| California A-Z | 0 | - | 4.49 | 28,735 |
| Which City in Florida? | 0 | - | 4.61 | 10,951 |
| Which City in New York State? | 0 | - | 4.60 | 15,902 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,992 |
| Which City in Texas? | 0 | - | 4.45 | 25,015 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,384,202 |
| U.S. States That Beat Canada | 0 | - | 4.20 | 39,616 |
| Merged U.S. States | 0 | - | 4.36 | 43,954 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,721 |
| Europe Map Quiz | 0 | - | 5.00 | 4,741,304 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,274 |
| Cross Flags of Europe | 0 | - | 4.43 | 297,459 |
| Satellite Images - Europe | 0 | - | 4.47 | 103,946 |
| European Cities by Picture #2 | 0 | - | 4.45 | 38,026 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,247 |
| Flags of the Middle East | 0 | - | 4.69 | 62,444 |
| The Iraq War | 0 | - | 4.47 | 15,583 |
| Chinese Zodiac Quiz | 0 | - | 4.80 | 139,162 |
| All Country Flags of the World | 0 | - | 5.00 | 3,620,690 |
| Game of Thrones Characters by Screen Time | 0 | - | 4.61 | 91,072 |
| Countries of Africa | 0 | - | 5.00 | 2,516,810 |
| Africa Map Quiz | 0 | - | 5.00 | 2,108,729 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,134 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,068 |
| African East Coast | 0 | - | 4.96 | 95,381 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,246 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,160 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,541 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,078 |
| Australian Capitals | 0 | - | 4.92 | 62,639 |
| Australian Animals By Picture | 0 | - | 4.45 | 31,495 |
| Australia Map Quiz | 0 | - | 4.94 | 343,020 |
| Pixelated Americas Map | 0 | - | 4.39 | 46,922 |
| South America Map Quiz | 0 | - | 5.00 | 1,543,415 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,015,658 |
| Most Guessed North American Teams by Sport | 0 | - | 4.28 | 64,008 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,387 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,532 |
| The George Washington Presidency | 0 | - | 4.03 | 14,494 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,676 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,546 |
| The John Adams Presidency | 0 | - | 4.12 | 8,697 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,896 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,702 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,255 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,629 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,798 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,664 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,637 |
| Harvard University | 0 | - | 4.15 | 8,275 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,512 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,669 |
| Boston Celtics Trivia | 0 | - | 4.12 | 14,825 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,147 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 34,953 |
| It's Always Sunny in Philadelphia Quiz | 0 | - | 4.34 | 15,794 |
| Biggest Cities in Washington State | 0 | - | 4.43 | 36,025 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,212 |
| U.S. States by Clue #1 | 0 | - | 4.50 | 38,762 |
| U.S. States by Emoji | 0 | - | 4.48 | 100,375 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 41,831 |
| Random U.S. Sports Team to State | 0 | - | 4.36 | 26,396 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,634 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,806 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,497 |
| U.S. States by Nickname | 0 | - | 4.57 | 69,376 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,227 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,258 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,245 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 34,666 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,788 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,409 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,641 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,782 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,951 |
| Official European Union Languages | 0 | - | 4.97 | 237,424 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,182 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,322,319 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,692 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,097 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,097 |
| The Only European Country ... | 0 | - | 4.91 | 214,769 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,079 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,569 |
| Countries that Beat France | 0 | - | 4.49 | 75,353 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,699 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,063 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,640 |
| Counties of England | 0 | - | 4.97 | 791,567 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 69,482 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,386 |
| British Geography Quiz #1 | 0 | - | 4.51 | 48,221 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,747 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,444 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,787 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,045 |
| Asia Map Quiz | 0 | - | 4.99 | 909,669 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,925 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 98,008 |
| Random Asian Flag to Country | 0 | - | 4.77 | 113,074 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,378,469 |
| The Persian Gulf War | 0 | - | 4.02 | 8,419 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,077 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,959 |
| Empires by Maps | 0 | - | 4.98 | 119,053 |
| MCU Actors by Picture | 0 | - | 4.44 | 83,405 |
| Countries by Road Signs | 0 | - | 4.98 | 53,304 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,192 |
| Flags with Crescents | 0 | - | 4.98 | 168,095 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,529,709 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,089,001 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 730,819 |
| Country Flag Trivia | 0 | - | 4.81 | 56,213 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 102,774 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 76,733 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.42 | 76,616 |
| Pixelated Flag Quiz | 0 | - | 4.98 | 86,308 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 66,696 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 84,606 |
| Name a Valid Country Flag | 0 | - | 4.67 | 75,083 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,271 |
| National Football Team Logos | 0 | - | 4.85 | 179,285 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,227 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,427 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,190 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,876 |
