| Countries that Border Iraq | 0 | - | 4.97 | 109,151 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,474 |
| Byzantine History | 0 | - | 4.91 | 29,033 |
| Byzantine Emperors | 0 | - | 4.93 | 14,626 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,179 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,601 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,671 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,749 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,373 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,448 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,813 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,860 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,615 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,109 |
| Countries Bordering Iran | 0 | - | 4.83 | 96,100 |
| Iraq Country Quiz | 0 | - | 4.43 | 41,163 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,740 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,597 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,898 |
| Asia Map Quiz | 0 | - | 4.99 | 925,885 |
| Egypt Country Quiz | 0 | - | 4.82 | 77,972 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,511 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,041 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,608 |
| Geography of Egypt | 0 | - | 4.60 | 21,624 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,433 |
| Ancient Greek Words | 0 | - | 4.93 | 112,568 |
| Flags of Asia Quiz | 0 | - | 4.99 | 621,128 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,044 |
| Countries that Beat Egypt | 0 | - | 4.91 | 67,139 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,542 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,211 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,479 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,444 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,486 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,046 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,551 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,869 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,636 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 100,001 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,237 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,910 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,388 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,143 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,748 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.92 | 50,695 |
| Countries of the Middle East | 0 | - | 4.96 | 203,093 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,101 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,718 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,629 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,069 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,083 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,070 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,459 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,729 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,898 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,932 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,947 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,994 |
| Figures from Greek Mythology | 0 | - | 4.91 | 189,014 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,906 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,075 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.90 | 106,956 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,786 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,060 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,828 |
| Monarchies of Asia | 0 | - | 4.97 | 71,554 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,319 |
| Flags of the Middle East | 0 | - | 4.69 | 62,841 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,751 |
| Qatar Country Quiz | 0 | - | 4.86 | 31,738 |
| History of Iran | 0 | - | 4.66 | 16,431 |
| Iran Country Quiz | 0 | - | 4.49 | 60,725 |
| Provinces of Turkey | 0 | - | 4.95 | 206,088 |
| Syria Country Quiz | 0 | - | 4.81 | 33,067 |
| Jordan Country Quiz | 0 | - | 4.86 | 32,108 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,875 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 102,095 |
| Provinces of China | 0 | - | 4.97 | 208,350 |
| China Cities Map Quiz | 0 | - | 4.94 | 105,952 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 94,712 |
| History of China | 0 | - | 4.35 | 57,630 |
| Japanese Prefectures | 0 | - | 4.98 | 139,212 |
| Japan Country Quiz | 0 | - | 4.93 | 143,435 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 33,386 |
| States of India | 0 | - | 4.94 | 196,208 |
| History of India | 0 | - | 4.62 | 21,523 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,612 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,994 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,501 |
| Name a Valid African Country | 0 | - | 4.98 | 155,139 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,141 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 44,244 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,920 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,728,150 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,871 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,441 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,913 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,777 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,165 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,365 |
| Name that Greek Letter | 0 | - | 4.93 | 325,112 |
| Name the English Monarchs | 0 | - | 4.91 | 506,959 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,723 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,978 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,722 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,615 |
| Countries Closest to Turkey | 0 | - | 4.96 | 126,967 |
| Countries Bordering Turkey | 0 | - | 4.98 | 117,924 |
| Countries Bordering Saudi Arabia | 0 | - | 4.96 | 133,862 |
| Countries that Beat Saudi Arabia | 0 | - | 4.74 | 46,619 |
| Countries Closest to Yemen | 0 | - | 4.92 | 22,806 |
| Countries Closest to Cyprus | 0 | - | 4.91 | 56,198 |
| Countries Closest to Indonesia | 0 | - | 4.97 | 105,101 |
| Countries Closest to Vietnam | 0 | - | 4.96 | 94,421 |
| Countries Bordering Myanmar | 0 | - | 4.87 | 78,219 |
| Geography of China | 0 | - | 4.21 | 14,025 |
| Chinese Inventions | 0 | - | 4.30 | 33,867 |
| Countries that Border China | 0 | - | 4.96 | 264,394 |
| Countries that Visit Japan the Most | 0 | - | 4.93 | 77,899 |
| Most-Visited Countries by Japanese | 0 | - | 4.95 | 60,575 |
| Countries that Beat Japan | 0 | - | 4.41 | 68,410 |
| Countries Closest to Japan | 0 | - | 4.92 | 139,250 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 93,779 |
| States of India Map Quiz | 0 | - | 4.84 | 26,925 |
| Countries Bordering India | 0 | - | 4.98 | 163,847 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,679 |
| Countries that Beat India | 0 | - | 4.42 | 63,354 |
| Countries Closest to India | 0 | - | 4.97 | 103,277 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,765 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,598 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,053 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,669 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,357 |
| The Trojan War | 0 | - | 4.83 | 40,020 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,806 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,064 |
| Roman History Vocabulary | 0 | - | 4.41 | 57,733 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,636 |
| Roman Emperors | 0 | - | 4.95 | 121,318 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,260 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,928 |
| Geography of Spain | 0 | - | 4.59 | 22,191 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,335 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,099 |
| Countries and States in the Caucasus | 0 | - | 4.46 | 51,838 |
| Asian Countries by Borders in 30 Seconds | 0 | - | 4.45 | 418,027 |
| Turkmenistan Country Quiz | 0 | - | 4.81 | 26,155 |
| The Only Remaining Asian Country . . . | 0 | - | 4.64 | 46,157 |
| Middle Eastern Geography Quiz | 0 | - | 4.57 | 44,225 |
| Which City in the Middle East? | 0 | - | 4.47 | 67,317 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,577 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,239 |
| History of Egypt | 0 | - | 4.58 | 24,108 |
| Countries Closest to Egypt | 0 | - | 4.83 | 101,631 |
| Countries Closest to Israel | 0 | - | 4.69 | 106,869 |
| Oman Country Quiz | 0 | - | 4.86 | 27,101 |
| Brunei Country Quiz | 0 | - | 4.87 | 22,087 |
| Countries that Beat China | 0 | - | 4.85 | 116,819 |
| Closest Countries to North Korea | 0 | - | 4.94 | 123,311 |
| Countries that Beat North Korea | 0 | - | 4.43 | 34,696 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,359 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,628 |
| Hindu Countries | 0 | - | 4.86 | 50,615 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,641 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,439 |
| Names of Generations | 0 | - | 4.09 | 45,558 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,682 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,736 |
| American History Quotes #1 | 0 | - | 4.37 | 96,216 |
| American History Quotes #2 | 0 | - | 4.38 | 41,516 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,350 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,748 |
| History of Russia Quiz | 0 | - | 4.47 | 32,010 |
| History of Italy | 0 | - | 4.55 | 32,164 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,395 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,834 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,443 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,117 |
| Asian Physical Geography | 0 | - | 4.61 | 35,632 |
| East Asian Islands on the Map | 0 | - | 4.55 | 33,220 |
| 10 Westernmost Countries in Asia | 0 | - | 4.69 | 71,634 |
| Asian Island Nations | 0 | - | 4.63 | 94,489 |
| Asia's Busiest Airports | 0 | - | 4.70 | 53,166 |
| Arab Spring Countries | 0 | - | 4.51 | 44,263 |
| Ottoman Empire Quiz | 0 | - | 4.37 | 17,228 |
| Countries Surrounding Istanbul | 0 | - | 4.89 | 24,981 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,920 |
| Israel Immigration by Country | 0 | - | 4.29 | 36,407 |
| The Vietnam War | 0 | - | 4.44 | 35,666 |
| The Life of Gandhi | 0 | - | 4.37 | 13,083 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,797 |
| History of South Africa | 0 | - | 4.60 | 17,771 |
| Word Chain - Australia | 0 | - | 4.38 | 38,253 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,769 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,902 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,912 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,606 |
| Europe Map Quiz | 0 | - | 5.00 | 4,790,488 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 29,099 |
