| European Countries by First 2 Letters | 0 | - | 4.96 | 454,151 |
| Official European Union Languages | 0 | - | 4.98 | 198,845 |
| European Countries in their Native Language | 0 | - | 4.99 | 142,918 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 382,129 |
| Slavic Languages | 0 | - | 4.58 | 48,420 |
| Countries that Beat Switzerland | 0 | - | 4.85 | 37,290 |
| Europe Geography Decoder | 0 | - | 4.89 | 62,800 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.82 | 38,918 |
| Russia Multiple Choice | 0 | - | 4.56 | 37,843 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 20,716 |
| Celtic Nations | 0 | - | 4.76 | 44,522 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.89 | 79,069 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 283,231 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 113,606 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 73,792 |
| Eastern Europe Map Quiz | 0 | - | 4.88 | 114,771 |
| Slavic Countries | 0 | - | 4.96 | 99,816 |
| Regions of Spain Quiz | 0 | - | 4.85 | 93,588 |
| Cantons of Switzerland | 0 | - | 4.96 | 39,784 |
| British Words Quiz #2 | 0 | - | 4.04 | 106,598 |
| Champions League Winners | 0 | - | 4.90 | 839,407 |
| Count to 10 in Europe: Pro | 0 | - | 4.79 | 60,612 |
| Catholic Countries in Europe | 0 | - | 4.87 | 82,795 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,482 |
| History of Russia Quiz | 0 | - | 4.48 | 29,741 |
| Federal Subjects of Russia | 0 | - | 4.95 | 110,355 |
| Geography of Russia | 0 | - | 4.54 | 20,082 |
| Countries Formerly in Yugoslavia | 0 | - | 4.94 | 100,987 |
| States of Germany | 0 | - | 4.94 | 121,721 |
| Germany Immigration by Country | 0 | - | 4.90 | 68,937 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,111 |
| Counties of Ireland | 0 | - | 4.89 | 157,376 |
| Regions of Italy | 0 | - | 4.88 | 59,579 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,397 |
| England or Wales? | 0 | - | 4.93 | 39,855 |
| All Champions League Teams Ever | 0 | - | 4.89 | 102,565 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 198,332 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 244,331 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,339 |
| Spanish Immigration by Country | 0 | - | 4.59 | 51,545 |
| Switzerland Immigration by Country | 0 | - | 4.81 | 19,899 |
| British Spellings Quiz | 0 | - | 4.04 | 94,425 |
| Pre-Euro Currencies | 0 | - | 4.42 | 49,173 |
| Word Scramble - European Countries | 0 | - | 4.71 | 112,895 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 83,570 |
| Word Chain - Russia | 0 | - | 4.41 | 14,757 |
| British Words Quiz #1 | 0 | - | 3.78 | 235,710 |
| British Foods | 0 | - | 3.83 | 46,970 |
| British and American Word Differences | 0 | - | 2.67 | 44,316 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.93 | 55,588 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 579,926 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,305 |
| Roman Emperors | 0 | - | 4.95 | 94,814 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 32,178 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 64,952 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 253,131 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 243,111 |
| Top European Languages on a Map | 0 | - | 4.76 | 116,770 |
| French Geography Quiz #1 | 0 | - | 4.86 | 30,791 |
| Germany Multiple Choice | 0 | - | 4.80 | 48,875 |
| The Trojan War | 0 | - | 4.81 | 35,673 |
| Italy Multiple Choice | 0 | - | 4.72 | 92,825 |
| Provinces of the Netherlands | 0 | - | 4.61 | 32,978 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 45,890 |
| British Acronyms | 0 | - | 4.42 | 43,190 |
| Foods in a Full English Breakfast | 0 | - | 4.41 | 72,769 |
| Beatles Songs Quiz | 0 | - | 4.94 | 204,290 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 271,844 |
| Australian Capitals | 0 | - | 4.90 | 52,953 |
| European Geography By Letter - A | 0 | - | 4.55 | 123,639 |
| European Geography By Letter - B #1 | 0 | - | 4.72 | 103,023 |
| European Geography By Letter - C | 0 | - | 4.44 | 104,426 |
| European Geography By Letter - D | 0 | - | 4.52 | 99,029 |
| European Geography By Letter - L | 0 | - | 4.50 | 104,460 |
| European Geography By Letter - M | 0 | - | 4.55 | 113,946 |
| European Geography By Letter - P | 0 | - | 4.79 | 89,107 |
| European Geography By Letter - N | 0 | - | 4.43 | 93,092 |
| European Geography By Letter - V | 0 | - | 4.45 | 85,922 |
| Europe Map Quiz | 0 | - | 5.00 | 4,257,561 |
| Europe Geography Quiz #1 | 0 | - | 4.52 | 66,741 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 67,233 |
| Europe Geography Quiz #4 | 0 | - | 4.56 | 65,922 |
| Europe Geography Quiz #5 | 0 | - | 4.53 | 57,621 |
| European Geography By Letter - S #1 | 0 | - | 4.57 | 93,544 |
| European Geography A-Z | 0 | - | 4.43 | 45,072 |
| Regions of France | 0 | - | 4.64 | 99,091 |
| France Immigration by Country | 0 | - | 4.80 | 68,337 |
| German Loan Words | 0 | - | 4.28 | 129,053 |
| German Groups of Things | 0 | - | 4.43 | 35,768 |
| Capitals of German States | 0 | - | 4.67 | 26,982 |
| Chancellors of Germany, 1949–present | 0 | - | 4.56 | 13,319 |
| Germany True or False? | 0 | - | 4.64 | 44,128 |
| Largest Islands of Greece | 0 | - | 4.56 | 38,970 |
| Olympian Gods Quiz | 0 | - | 4.96 | 455,185 |
| Name that Greek Letter | 0 | - | 4.94 | 294,262 |
| Ancient Greek Words | 0 | - | 4.90 | 96,298 |
| Capitals of Italian Regions | 0 | - | 4.52 | 25,995 |
| Elemental Words | 0 | - | 4.96 | 47,002 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 396,581 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 48,072 |
| The Vikings! | 0 | - | 4.44 | 27,019 |
| Sweden Immigration by Country | 0 | - | 4.66 | 41,949 |
| The Portuguese Empire | 0 | - | 4.54 | 11,292 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,193 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,221 |
| Champions League Top 4 | 0 | - | 4.76 | 102,288 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,334,956 |
| Asia Map Quiz | 0 | - | 4.99 | 774,656 |
| Africa Map Quiz | 0 | - | 5.00 | 1,926,112 |
| Oceania Map Quiz | 0 | - | 4.97 | 562,666 |
| European Physical Geography | 0 | - | 4.19 | 31,821 |
| Slovakia... or Slovenia? | 0 | - | 4.79 | 39,492 |
| History of Austria | 0 | - | 4.68 | 16,292 |
| Geography of the French Empire | 0 | - | 4.49 | 25,236 |
| The French Revolution | 0 | - | 4.44 | 21,815 |
| History of France Quiz | 0 | - | 4.55 | 39,490 |
| History of Ireland Quiz | 0 | - | 4.43 | 18,785 |
| History of Italy | 0 | - | 4.49 | 29,655 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 651,793 |
| History of The Netherlands | 0 | - | 4.42 | 15,644 |
| Kings of Spain Quiz | 0 | - | 4.12 | 12,739 |
| Canary Islands | 0 | - | 4.60 | 16,500 |
| British Groups of Things | 0 | - | 4.26 | 79,951 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,650 |
| British Monopoly Board | 0 | - | 4.50 | 38,872 |
| South and Central Asia Map Quiz | 0 | - | 4.92 | 78,727 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,273,753 |
| English Words of Arabic Origin | 0 | - | 4.55 | 46,611 |
| Countries of Africa | 0 | - | 5.00 | 2,142,473 |
| African East Coast | 0 | - | 4.97 | 83,342 |
| Western Africa Map Quiz | 0 | - | 4.97 | 60,018 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 39,682 |
| Australia Map Quiz | 0 | - | 4.95 | 317,387 |
| United States Map Quiz | 0 | - | 4.98 | 3,882,209 |
| American Legal Vocabulary | 0 | - | 4.43 | 31,982 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.16 | 50,107 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 194,197 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.92 | 86,413 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,566 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 333,986 |
| European Geography By Letter - E | 0 | - | 4.19 | 104,807 |
| European Geography By Letter - F | 0 | - | 4.14 | 84,737 |
| European Geography By Letter - H | 0 | - | 4.29 | 88,190 |
| European Geography By Letter - G | 0 | - | 4.24 | 94,669 |
| European Geography By Letter - I | 0 | - | 4.09 | 88,394 |
| European Geography By Letter - K | 0 | - | 4.16 | 64,178 |
| European Geography By Letter - O | 0 | - | 4.27 | 57,456 |
| European Geography By Letter - R | 0 | - | 4.39 | 87,168 |
| European Geography by Letter - W | 0 | - | 4.21 | 77,999 |
| European Geography By Letter - T | 0 | - | 4.39 | 70,604 |
| Europe Geography Quiz #3 | 0 | - | 4.31 | 59,677 |
| European Geography By Letter - S #2 | 0 | - | 4.16 | 46,473 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 90,936 |
| Country Codes of Europe | 0 | - | 3.34 | 12,677 |
| The Only European Country ... | 0 | - | 4.94 | 176,092 |
| Embarrassing Chapters in Russian History | 0 | - | 3.80 | 19,265 |
| Austria... or Australia? | 0 | - | 4.79 | 97,454 |
| Capitals of French Regions | 0 | - | 4.40 | 14,682 |
| Presidents of France | 0 | - | 4.22 | 19,913 |
| Word Chain - France | 0 | - | 4.38 | 39,778 |
| Famous Germans | 0 | - | 4.39 | 35,093 |
| Ancient Greek Trivia | 0 | - | 4.56 | 63,129 |
| Figures from Greek Mythology | 0 | - | 4.92 | 168,487 |
| Famous Italians | 0 | - | 4.40 | 65,555 |
| Italian Foods | 0 | - | 4.25 | 63,511 |
| Country Name Etymologies #1 | 0 | - | 4.97 | 132,870 |
| Country Name Etymologies #2 | 0 | - | 4.96 | 70,988 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 35,212 |
| Geography of the Roman Empire | 0 | - | 4.58 | 48,231 |
| Byzantine History | 0 | - | 4.87 | 26,094 |
| Most Common First Names in Spain | 0 | - | 4.25 | 43,489 |
| History of Spain Quiz | 0 | - | 4.33 | 19,492 |
| Languages of Spain | 0 | - | 4.34 | 21,195 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 65,497 |
| Counties of England | 0 | - | 4.96 | 683,451 |
| British Geography Quiz #2 | 0 | - | 4.27 | 26,245 |
| Wonderwall Lyrics | 0 | - | 4.22 | 68,362 |
| Best-Selling British Musical Acts | 0 | - | 4.47 | 43,296 |
| Bridges of London | 0 | - | 4.11 | 9,310 |
| British Sport Trivia | 0 | - | 4.32 | 19,167 |
| Famous Welsh People | 0 | - | 4.12 | 9,242 |
| Champions League All-Time Table | 0 | - | 4.17 | 114,388 |
| Champions League Top Goal Scorers | 0 | - | 4.22 | 163,978 |
| Flags of Asia Quiz | 0 | - | 4.99 | 519,026 |
| East Asia Cities Map Quiz | 0 | - | 4.97 | 99,637 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 124,885 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 88,077 |
| 10 Easternmost Countries in Asia | 0 | - | 4.98 | 95,854 |
| Countries of Asia with Two or More Words | 0 | - | 4.95 | 110,009 |
| Asian Countries Ending in "IA" | 0 | - | 4.94 | 92,738 |
| Top Asian Languages on a Map | 0 | - | 4.93 | 59,948 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 208,883 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.96 | 35,643 |
| Countries of the Middle East | 0 | - | 4.96 | 171,469 |
| Countries where Arabic is an Official Language | 0 | - | 4.83 | 51,879 |
| Japanese Loanwords | 0 | - | 4.50 | 78,935 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 91,027 |
| Flags of Africa Quiz | 0 | - | 4.99 | 381,354 |
| Landlocked Countries in Africa | 0 | - | 4.98 | 18,937 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 196,461 |
