| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,504 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,060 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,944 |
| Name a Valid African Country | 0 | - | 4.98 | 154,803 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| Countries Closest to Ethiopia | 0 | - | 4.90 | 69,165 |
| Countries Bordering Kenya | 0 | - | 4.87 | 63,061 |
| Countries Bordering Tanzania | 0 | - | 4.96 | 70,653 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,578 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,437 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,358 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,031 |
| Countries of Africa | 0 | - | 5.00 | 2,553,067 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,628 |
| African East Coast | 0 | - | 4.96 | 96,558 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,419 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,808 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,799 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,668 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,557 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,451 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,104 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,403 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,366 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,341 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,619 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,685 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,332 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,400 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,075 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,312 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,083 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,971 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,326 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,937 |
| African Island Countries | 0 | - | 4.96 | 102,252 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,308 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,571 |
| History of South Africa | 0 | - | 4.60 | 17,743 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,510 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,090 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,693 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,495 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,628 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,887 |
| African Diaspora - Top 10 Countries | 0 | - | 4.93 | 73,195 |
| The Only African Country ... | 0 | - | 4.99 | 129,510 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,316 |
| 10 Easternmost Countries in Africa | 0 | - | 4.97 | 24,655 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,286 |
| Countries Closest to Africa | 0 | - | 4.96 | 157,630 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.89 | 59,254 |
| Morocco Country Quiz | 0 | - | 4.81 | 46,737 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,870 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 64,075 |
| D.R. Congo Country Quiz | 0 | - | 4.88 | 39,520 |
| Countries Bordering D.R. Congo | 0 | - | 4.97 | 64,757 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,116 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,427 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,821 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,295 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,954 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,572 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,829 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,694 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,137 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,465 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,434 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,801 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,743 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,612 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,466 |
| Name the English Monarchs | 0 | - | 4.91 | 505,420 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,779 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,454 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,574 |
| Geography of Egypt | 0 | - | 4.60 | 21,584 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,339 |
| African Great Lakes | 0 | - | 4.82 | 66,793 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,865 |
| Kenya Country Quiz | 0 | - | 4.86 | 34,937 |
| Tanzania Country Quiz | 0 | - | 4.91 | 33,203 |
| Eswatini Country Quiz | 0 | - | 4.85 | 20,899 |
| Botswana Country Quiz | 0 | - | 4.90 | 22,617 |
| Lesotho Country Quiz | 0 | - | 4.83 | 20,666 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,615 |
| Gabon Country Quiz | 0 | - | 4.83 | 18,628 |
| Countries that Beat D.R. Congo | 0 | - | 4.75 | 41,960 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,336 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,331 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,811 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,396 |
| The Trojan War | 0 | - | 4.83 | 39,933 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,722 |
| Name that Greek Letter | 0 | - | 4.93 | 324,672 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,678 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,485 |
| Roman Emperors | 0 | - | 4.95 | 120,897 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,731 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,926 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,399 |
| History of Egypt | 0 | - | 4.58 | 24,088 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,333 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,898 |
| Djibouti Country Quiz | 0 | - | 4.82 | 21,787 |
| Mauritius Country Quiz | 0 | - | 4.83 | 22,354 |
| Seychelles Country Quiz | 0 | - | 4.91 | 21,965 |
| Liberia Country Quiz | 0 | - | 4.85 | 21,980 |
| Mali Country Quiz | 0 | - | 4.83 | 24,908 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,345 |
| Names of Generations | 0 | - | 4.09 | 45,394 |
| American History Quotes #1 | 0 | - | 4.37 | 96,168 |
| American History Quotes #2 | 0 | - | 4.38 | 41,484 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,563 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,315 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,717 |
| History of Russia Quiz | 0 | - | 4.47 | 31,985 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,311 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,990 |
| Ancient Greek Words | 0 | - | 4.93 | 112,248 |
| History of Italy | 0 | - | 4.55 | 32,110 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,783 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,145 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,380 |
| Geography of Spain | 0 | - | 4.59 | 22,149 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,040 |
| African Physical Geography | 0 | - | 4.51 | 31,786 |
| Countries of Africa by Borders in 30 Seconds | 0 | - | 4.43 | 356,426 |
| Sudan Country Quiz | 0 | - | 4.91 | 27,803 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,975 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,132 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,348 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,750 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,823 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 29,006 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,909 |
| German Groups of Things | 0 | - | 4.47 | 38,596 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,074 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,413 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,653 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,310 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,041 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,457 |
| Ten Highest HDI Countries in Africa | 0 | - | 4.70 | 67,917 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,153 |
| South Africa Country Quiz | 0 | - | 4.52 | 61,753 |
| Provinces of South Africa | 0 | - | 4.74 | 21,890 |
| Geography of South Africa | 0 | - | 4.54 | 17,295 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,920 |
| Australian Capitals | 0 | - | 4.92 | 62,804 |
| Word Chain - Australia | 0 | - | 4.38 | 38,216 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,151 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,833 |
| History of Mexico | 0 | - | 4.52 | 15,356 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,669 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,878 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,347 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,585 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,675 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,808 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,579 |
| Official European Union Languages | 0 | - | 4.97 | 239,445 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,448 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,188 |
| European Geographic Groups of Four | 0 | - | 4.54 | 19,633 |
| History of Austria | 0 | - | 4.70 | 17,952 |
| Geography of the French Empire | 0 | - | 4.45 | 27,194 |
| Word Chain - France | 0 | - | 4.38 | 42,899 |
| The French Revolution | 0 | - | 4.47 | 24,111 |
| History of France | 0 | - | 4.61 | 57,467 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,542 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,174 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,005 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,922 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,375 |
| Italian Foods | 0 | - | 4.30 | 73,137 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,562 |
| Byzantine History | 0 | - | 4.91 | 28,989 |
| Byzantine Emperors | 0 | - | 4.92 | 14,503 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| The Vikings! | 0 | - | 4.46 | 28,391 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| British Groups of Things | 0 | - | 4.25 | 82,975 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,085 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,436 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,113 |
| Geography of the British Empire | 0 | - | 4.48 | 39,813 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,293 |
| Medieval English History | 0 | - | 4.53 | 43,618 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,109 |
| Asia Map Quiz | 0 | - | 4.99 | 923,085 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,920 |
| History of Iran | 0 | - | 4.66 | 16,405 |
| Egyptian Gods and Goddesses | 0 | - | 4.43 | 27,631 |
| Geography of China | 0 | - | 4.21 | 14,002 |
| Chinese Inventions | 0 | - | 4.30 | 33,845 |
| History of China | 0 | - | 4.35 | 57,471 |
| History of India | 0 | - | 4.62 | 21,489 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,600 |
| Which African Country? | 0 | - | 4.58 | 36,433 |
