| Japanese Loanwords | 0 | - | 4.47 | 84,885 |
| English Words of Arabic Origin | 0 | - | 4.54 | 49,893 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,676 |
| German Loan Words | 0 | - | 4.27 | 140,935 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 710,135 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,777 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,077 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,618 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.92 | 50,588 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,739 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,715 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,015 |
| Provinces of Turkey | 0 | - | 4.95 | 205,909 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,815 |
| Provinces of China | 0 | - | 4.97 | 207,949 |
| Japanese Prefectures | 0 | - | 4.99 | 139,019 |
| States of India | 0 | - | 4.94 | 195,864 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,836 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,628 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,892 |
| Name that Greek Letter | 0 | - | 4.93 | 324,973 |
| Countries Closest to Yemen | 0 | - | 4.92 | 22,780 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,020 |
| Countries and States in the Caucasus | 0 | - | 4.46 | 51,806 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 109,302 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 276,691 |
| Middle Eastern Geography Quiz | 0 | - | 4.57 | 44,186 |
| China's Territorial Disputes | 0 | - | 4.48 | 35,801 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,511 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,841 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,501 |
| Ancient Greek Words | 0 | - | 4.93 | 112,454 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,993 |
| Asian Physical Geography | 0 | - | 4.61 | 35,622 |
| East Asian Islands on the Map | 0 | - | 4.55 | 33,210 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 32,678 |
| Asia's Busiest Airports | 0 | - | 4.70 | 53,120 |
| Japan Multiple Choice | 0 | - | 4.48 | 40,840 |
| Native American Words | 0 | - | 4.26 | 24,829 |
| Europe Map Quiz | 0 | - | 5.00 | 4,788,058 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,977 |
| American to British Word Translation | 0 | - | 4.14 | 139,690 |
| Asian Islands | 0 | - | 4.49 | 20,911 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,465 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,076 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,664 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,206 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,661 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,660 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,734 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,361 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,201 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,317 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,307 |
| A Quiz About Islam | 0 | - | 4.32 | 48,616 |
| Middle East A-Z | 0 | - | 4.47 | 46,238 |
| History of Iran | 0 | - | 4.66 | 16,424 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,179 |
| Provinces of the Philippines | 0 | - | 4.56 | 51,042 |
| Largest Indonesian Islands | 0 | - | 4.77 | 50,300 |
| Chinese Zodiac Quiz | 0 | - | 4.80 | 140,080 |
| Dynasties of China | 0 | - | 4.64 | 28,066 |
| History of China | 0 | - | 4.35 | 57,576 |
| Overseas Chinese Population | 0 | - | 4.55 | 43,586 |
| Things that Have Been Banned in China | 0 | - | 4.31 | 58,411 |
| Sushi Translation | 0 | - | 4.08 | 13,985 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,410 |
| Countries of the Indian Diaspora | 0 | - | 4.46 | 59,978 |
| History of India | 0 | - | 4.62 | 21,513 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,366 |
| Last Name Vocabulary | 0 | - | 4.17 | 56,420 |
| Mythical Creatures #2 | 0 | - | 4.06 | 112,292 |
| Christmas Vocabulary | 0 | - | 4.07 | 33,414 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,354 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,463 |
| Australian Capitals | 0 | - | 4.92 | 62,830 |
| Australia Map Quiz | 0 | - | 4.95 | 346,165 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,253 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,728 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,118 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,932 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,916 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,787 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,725 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,230 |
| Official European Union Languages | 0 | - | 4.97 | 239,789 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,641 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,313 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,099 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,859 |
| The Only European Country ... | 0 | - | 4.91 | 218,994 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,502 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.40 | 82,788 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,055 |
| British Spellings | 0 | - | 4.06 | 99,604 |
| Asian Geography By Letter - S | 0 | - | 4.17 | 56,245 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 52,177 |
| Asian Geography by Letter - G | 0 | - | 4.36 | 51,412 |
| Asian Geography by Letter - I | 0 | - | 4.37 | 68,067 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 65,011 |
| Asian Geography by Letter - N | 0 | - | 4.34 | 50,454 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,481 |
| Asia Map Quiz | 0 | - | 4.99 | 925,164 |
| South Asian Cities by Map | 0 | - | 4.33 | 23,559 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,965 |
| Word Chain - Asia | 0 | - | 4.34 | 29,391 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,942 |
| Asian Geography By Letter - J | 0 | - | 4.27 | 34,942 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,272 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,608 |
| Iran... or Iraq? | 0 | - | 4.31 | 33,664 |
| History of Egypt | 0 | - | 4.58 | 24,102 |
| Emirates of the United Arab Emirates | 0 | - | 4.53 | 19,075 |
| Largest Philippines Islands | 0 | - | 4.63 | 24,713 |
| Chinese Inventions | 0 | - | 4.30 | 33,863 |
| Cities of the Pearl River Delta | 0 | - | 4.62 | 15,448 |
| Chinese Geography on the Map | 0 | - | 4.56 | 24,489 |
| China by Picture | 0 | - | 4.51 | 63,711 |
| Japanese Companies | 0 | - | 4.29 | 34,362 |
| Four Main Islands of Japan | 0 | - | 4.53 | 26,988 |
| North Korea... or South Korea? | 0 | - | 4.47 | 80,984 |
| Bhutan... or Nepal? | 0 | - | 4.59 | 17,889 |
| Countries of Africa | 0 | - | 5.00 | 2,559,655 |
| Africa Map Quiz | 0 | - | 5.00 | 2,128,652 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,856 |
| African East Coast | 0 | - | 4.96 | 96,766 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,629 |
| Elemental Words | 0 | - | 4.97 | 52,554 |
| Foods by Alternate Definition | 0 | - | 3.88 | 53,547 |
| Movie Title Vocabulary Quiz #1 | 0 | - | 4.23 | 59,879 |
| Song Title Vocabulary | 0 | - | 4.35 | 62,599 |
| First Name Vocabulary #1 | 0 | - | 3.85 | 48,716 |
| First Name Vocabulary #2 | 0 | - | 3.94 | 36,940 |
| Country Name Etymologies #1 | 0 | - | 4.97 | 159,394 |
| Country Name Etymologies #2 | 0 | - | 4.96 | 86,976 |
| Flags of Oceania | 0 | - | 5.00 | 262,696 |
| Australian States and Territories | 0 | - | 4.96 | 142,860 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 146,520 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,502 |
| Australian Slang | 0 | - | 4.24 | 28,732 |
| Australia True or False | 0 | - | 4.87 | 57,148 |
| Australia... or New Zealand? | 0 | - | 4.83 | 62,006 |
| Flags of North and South America | 0 | - | 4.99 | 376,958 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,955 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,788 |
| The Only American Country ... | 0 | - | 4.92 | 122,213 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,668 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,665 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,662 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,755 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,011 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,031,444 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,825 |
| North America Map Quiz | 0 | - | 4.98 | 252,038 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 95,188 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 65,008 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,888 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,820 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,978 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,942 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,999 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,260 |
| US States Quiz | 0 | - | 5.00 | 16,995,508 |
| U.S. States with Spanish Names | 0 | - | 4.49 | 88,262 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,199 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,587 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,559 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,506 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,172 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,505 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,257,969 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,883 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,335,630 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,507 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,053 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,632 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,492 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,770 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,582 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,023 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,762 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,746 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,746 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,471 |
| Monarchies of Europe | 0 | - | 4.90 | 98,873 |
| European Countries with One Border | 0 | - | 4.97 | 183,795 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,529 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,786 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,413 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,369 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,979 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,177 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,789 |
| Slavic Countries | 0 | - | 4.96 | 112,365 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,475 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,475 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,639 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,793 |
| States of Germany | 0 | - | 4.95 | 154,470 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,692 |
