| Official European Union Languages | 0 | - | 4.98 | 198,715 |
| European Countries in their Native Language | 0 | - | 4.99 | 142,855 |
| Slavic Languages | 0 | - | 4.58 | 48,399 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 453,866 |
| Count to 10 in Europe: Pro | 0 | - | 4.79 | 60,579 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 381,869 |
| Countries that Beat Switzerland | 0 | - | 4.85 | 37,255 |
| Europe Geography Decoder | 0 | - | 4.89 | 62,758 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.82 | 38,904 |
| Top European Languages on a Map | 0 | - | 4.76 | 116,699 |
| Russia Multiple Choice | 0 | - | 4.56 | 37,823 |
| Top Asian Languages on a Map | 0 | - | 4.93 | 59,883 |
| Countries where Arabic is an Official Language | 0 | - | 4.83 | 51,868 |
| Top African Languages on a Map | 0 | - | 4.91 | 51,249 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 106,033 |
| Most Spoken Languages in Canada | 0 | - | 4.82 | 46,341 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.89 | 79,009 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 283,091 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 113,398 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 73,731 |
| Eastern Europe Map Quiz | 0 | - | 4.88 | 114,701 |
| Slavic Countries | 0 | - | 4.96 | 99,772 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 20,706 |
| Champions League Winners | 0 | - | 4.90 | 838,146 |
| Celtic Nations | 0 | - | 4.76 | 44,510 |
| Regions of Spain Quiz | 0 | - | 4.85 | 93,468 |
| Cantons of Switzerland | 0 | - | 4.96 | 39,738 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,177 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 263,552 |
| Catholic Countries in Europe | 0 | - | 4.87 | 82,709 |
| History of Russia Quiz | 0 | - | 4.48 | 29,734 |
| Federal Subjects of Russia | 0 | - | 4.95 | 110,118 |
| Geography of Russia | 0 | - | 4.54 | 20,080 |
| Countries Formerly in Yugoslavia | 0 | - | 4.94 | 100,935 |
| States of Germany | 0 | - | 4.94 | 121,575 |
| Germany Immigration by Country | 0 | - | 4.90 | 68,879 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,061 |
| Counties of Ireland | 0 | - | 4.89 | 157,248 |
| Regions of Italy | 0 | - | 4.88 | 59,524 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,383 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,316 |
| Switzerland Immigration by Country | 0 | - | 4.81 | 19,771 |
| England or Wales? | 0 | - | 4.93 | 39,826 |
| All Champions League Teams Ever | 0 | - | 4.89 | 102,398 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,444 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 198,158 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 243,627 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 141,037 |
| Word Chain - Russia | 0 | - | 4.41 | 14,749 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,268 |
| Roman Emperors | 0 | - | 4.95 | 94,718 |
| Spanish Immigration by Country | 0 | - | 4.58 | 51,515 |
| Languages of Spain | 0 | - | 4.34 | 21,186 |
| Pre-Euro Currencies | 0 | - | 4.42 | 49,153 |
| Word Scramble - European Countries | 0 | - | 4.71 | 112,844 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 83,370 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.93 | 55,526 |
| The Trojan War | 0 | - | 4.81 | 35,632 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 579,542 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 32,026 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 64,934 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 162,741 |
| Latvia Country Quiz | 0 | - | 4.88 | 28,173 |
| French Geography Quiz #1 | 0 | - | 4.86 | 30,758 |
| Germany Multiple Choice | 0 | - | 4.80 | 48,840 |
| Olympian Gods Quiz | 0 | - | 4.96 | 454,994 |
| Name that Greek Letter | 0 | - | 4.94 | 294,079 |
| Italy Multiple Choice | 0 | - | 4.72 | 92,740 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 48,015 |
| Provinces of the Netherlands | 0 | - | 4.61 | 32,959 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 45,882 |
| British Acronyms | 0 | - | 4.42 | 43,182 |
| Foods in a Full English Breakfast | 0 | - | 4.41 | 72,711 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.87 | 26,316 |
| Beatles Songs Quiz | 0 | - | 4.94 | 204,157 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 271,696 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 252,877 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 242,976 |
| European Geography By Letter - A | 0 | - | 4.55 | 123,582 |
| European Geography By Letter - B #1 | 0 | - | 4.72 | 102,980 |
| European Geography By Letter - C | 0 | - | 4.44 | 104,381 |
| European Geography By Letter - D | 0 | - | 4.52 | 98,979 |
| European Geography By Letter - L | 0 | - | 4.50 | 104,411 |
| European Geography By Letter - M | 0 | - | 4.55 | 113,902 |
| European Geography By Letter - P | 0 | - | 4.79 | 89,072 |
| European Geography By Letter - N | 0 | - | 4.43 | 93,058 |
| European Geography By Letter - V | 0 | - | 4.45 | 85,897 |
| Europe Map Quiz | 0 | - | 5.00 | 4,253,707 |
| Europe Geography Quiz #1 | 0 | - | 4.52 | 66,721 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 67,203 |
| Europe Geography Quiz #4 | 0 | - | 4.56 | 65,899 |
| Europe Geography Quiz #5 | 0 | - | 4.53 | 57,601 |
| European Geography By Letter - S #1 | 0 | - | 4.57 | 93,513 |
| European Geography A-Z | 0 | - | 4.43 | 45,047 |
| European Geography By Letter - B #2 | 0 | - | 4.72 | 61,493 |
| Regions of France | 0 | - | 4.64 | 98,966 |
| France Immigration by Country | 0 | - | 4.80 | 68,281 |
| German Groups of Things | 0 | - | 4.43 | 35,753 |
| Capitals of German States | 0 | - | 4.67 | 26,978 |
| Chancellors of Germany, 1949–present | 0 | - | 4.56 | 13,309 |
| Germany True or False? | 0 | - | 4.64 | 44,093 |
| Largest Islands of Greece | 0 | - | 4.56 | 38,907 |
| Ancient Greek Words | 0 | - | 4.90 | 96,208 |
| Capitals of Italian Regions | 0 | - | 4.52 | 25,990 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,425 |
| Top World Languages | 0 | - | 4.91 | 698,417 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 396,233 |
| The Vikings! | 0 | - | 4.44 | 27,013 |
| Sweden Immigration by Country | 0 | - | 4.66 | 41,913 |
| The Portuguese Empire | 0 | - | 4.54 | 11,287 |
| British Words Quiz #2 | 0 | - | 4.03 | 106,584 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,189 |
| Champions League Top 4 | 0 | - | 4.76 | 102,056 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,334,230 |
| Asia Map Quiz | 0 | - | 4.99 | 773,601 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 30,370 |
| Africa Map Quiz | 0 | - | 5.00 | 1,924,811 |
| Official Languages of South Africa | 0 | - | 4.54 | 24,843 |
| Oceania Map Quiz | 0 | - | 4.97 | 562,304 |
| Australian Capitals | 0 | - | 4.90 | 52,943 |
| European Physical Geography | 0 | - | 4.19 | 31,806 |
| Slovakia... or Slovenia? | 0 | - | 4.79 | 39,481 |
| History of Austria | 0 | - | 4.68 | 16,276 |
| Geography of the French Empire | 0 | - | 4.49 | 25,077 |
| The French Revolution | 0 | - | 4.44 | 21,801 |
| History of France Quiz | 0 | - | 4.55 | 39,476 |
| Figures from Greek Mythology | 0 | - | 4.92 | 168,384 |
| History of Ireland Quiz | 0 | - | 4.43 | 18,776 |
| History of Italy | 0 | - | 4.49 | 29,645 |
| Countries by Official Language | 0 | - | 4.95 | 153,414 |
| Places in their Native Language #1 | 0 | - | 4.87 | 208,840 |
| Places in their Native Language #2 | 0 | - | 4.88 | 112,278 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,555 |
| Countries in their Native Language | 0 | - | 4.98 | 176,923 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 89,862 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 35,194 |
| Geography of the Roman Empire | 0 | - | 4.58 | 48,082 |
| Roman Names for Places | 0 | - | 4.66 | 41,062 |
| Byzantine History | 0 | - | 4.87 | 26,073 |
| History of The Netherlands | 0 | - | 4.42 | 15,634 |
| Kings of Spain Quiz | 0 | - | 4.12 | 12,737 |
| Most Common First Names in Spain | 0 | - | 4.25 | 43,476 |
| Canary Islands | 0 | - | 4.60 | 16,491 |
| Real Madrid 2010's Starting XI | 0 | - | 4.85 | 49,319 |
| British Spellings Quiz | 0 | - | 4.04 | 94,397 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 65,469 |
| British Groups of Things | 0 | - | 4.26 | 79,934 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,641 |
| British Monopoly Board | 0 | - | 4.50 | 38,688 |
| Wonderwall Lyrics | 0 | - | 4.22 | 68,322 |
| Best-Selling British Musical Acts | 0 | - | 4.47 | 43,277 |
| Champions League All-Time Table | 0 | - | 4.17 | 114,186 |
| Champions League Top Goal Scorers | 0 | - | 4.22 | 163,743 |
| South and Central Asia Map Quiz | 0 | - | 4.92 | 78,614 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,273,148 |
| Japanese Language - Katakana Practice | 0 | - | 4.57 | 25,774 |
| Countries of Africa | 0 | - | 5.00 | 2,140,261 |
| African East Coast | 0 | - | 4.97 | 83,264 |
| Western Africa Map Quiz | 0 | - | 4.97 | 59,926 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 39,643 |
| Australia Map Quiz | 0 | - | 4.94 | 317,248 |
| United States Map Quiz | 0 | - | 4.98 | 3,880,497 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 193,878 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.92 | 86,401 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,468 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 333,778 |
| European Geography By Letter - E | 0 | - | 4.19 | 104,770 |
| European Geography By Letter - F | 0 | - | 4.14 | 84,608 |
| European Geography By Letter - H | 0 | - | 4.29 | 88,152 |
| European Geography By Letter - G | 0 | - | 4.24 | 94,627 |
| European Geography By Letter - I | 0 | - | 4.09 | 88,366 |
| European Geography By Letter - K | 0 | - | 4.16 | 64,150 |
| European Geography By Letter - O | 0 | - | 4.27 | 57,438 |
| European Geography By Letter - R | 0 | - | 4.39 | 87,143 |
| European Geography by Letter - W | 0 | - | 4.21 | 77,974 |
| European Geography By Letter - T | 0 | - | 4.39 | 70,577 |
| Europe Geography Quiz #3 | 0 | - | 4.31 | 59,650 |
| European Geography By Letter - S #2 | 0 | - | 4.16 | 46,453 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 90,816 |
| Country Codes of Europe | 0 | - | 3.34 | 12,670 |
| The Only European Country ... | 0 | - | 4.94 | 175,947 |
| Name a Major European City A-Z | 0 | - | 4.33 | 42,470 |
| Seas of Europe | 0 | - | 4.32 | 78,931 |
| Embarrassing Chapters in Russian History | 0 | - | 3.80 | 19,260 |
| Austria... or Australia? | 0 | - | 4.79 | 97,407 |
| Famous Dutch and Belgian People | 0 | - | 4.50 | 16,712 |
| Capitals of French Regions | 0 | - | 4.40 | 14,679 |
| Presidents of France | 0 | - | 4.22 | 19,906 |
| Word Chain - France | 0 | - | 4.38 | 39,757 |
| Famous Germans | 0 | - | 4.39 | 35,087 |
| History of Germany Quiz | 0 | - | 4.35 | 39,962 |
| Ancient Greek Trivia | 0 | - | 4.56 | 63,104 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.80 | 83,983 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.58 | 54,983 |
| Ancient Greece - Multiple Choice | 0 | - | 4.53 | 38,391 |
| Iceland... or Ireland? | 0 | - | 4.72 | 53,749 |
| Famous Italians | 0 | - | 4.40 | 65,498 |
| Italian Foods | 0 | - | 4.25 | 63,440 |
| Capitals in their Native Languages | 0 | - | 4.95 | 127,101 |
| German-Speaking Countries | 0 | - | 4.87 | 117,121 |
