| Official European Union Languages | 0 | - | 4.98 | 199,097 |
| European Countries in their Native Language | 0 | - | 4.99 | 143,056 |
| Slavic Languages | 0 | - | 4.58 | 48,480 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 454,589 |
| Count to 10 in Europe: Pro | 0 | - | 4.79 | 60,662 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 382,632 |
| Countries that Beat Switzerland | 0 | - | 4.85 | 37,354 |
| Europe Geography Decoder | 0 | - | 4.89 | 62,877 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.82 | 38,943 |
| Top European Languages on a Map | 0 | - | 4.76 | 116,948 |
| Russia Multiple Choice | 0 | - | 4.56 | 37,884 |
| Top Asian Languages on a Map | 0 | - | 4.93 | 60,061 |
| Countries where Arabic is an Official Language | 0 | - | 4.83 | 51,911 |
| Top African Languages on a Map | 0 | - | 4.91 | 51,671 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 106,128 |
| Most Spoken Languages in Canada | 0 | - | 4.82 | 46,471 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.89 | 79,172 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 283,552 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 114,087 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 73,949 |
| Eastern Europe Map Quiz | 0 | - | 4.89 | 114,857 |
| Slavic Countries | 0 | - | 4.96 | 99,912 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 20,739 |
| Champions League Winners | 0 | - | 4.91 | 841,695 |
| Celtic Nations | 0 | - | 4.76 | 44,545 |
| Regions of Spain Quiz | 0 | - | 4.85 | 93,812 |
| Cantons of Switzerland | 0 | - | 4.96 | 39,889 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,215 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 265,157 |
| Catholic Countries in Europe | 0 | - | 4.87 | 82,941 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 64,788 |
| History of Russia Quiz | 0 | - | 4.48 | 29,760 |
| Federal Subjects of Russia | 0 | - | 4.95 | 110,722 |
| Geography of Russia | 0 | - | 4.54 | 20,099 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 101,102 |
| States of Germany | 0 | - | 4.94 | 122,012 |
| Germany Immigration by Country | 0 | - | 4.90 | 69,074 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,148 |
| Counties of Ireland | 0 | - | 4.89 | 157,821 |
| Regions of Italy | 0 | - | 4.88 | 59,738 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,434 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,406 |
| Switzerland Immigration by Country | 0 | - | 4.76 | 20,139 |
| England or Wales? | 0 | - | 4.93 | 39,918 |
| All Champions League Teams Ever | 0 | - | 4.89 | 102,999 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,526 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 198,718 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 244,704 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 141,433 |
| Word Chain - Russia | 0 | - | 4.41 | 14,766 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,365 |
| Roman Emperors | 0 | - | 4.95 | 95,022 |
| Spanish Immigration by Country | 0 | - | 4.59 | 51,600 |
| Languages of Spain | 0 | - | 4.34 | 21,221 |
| Pre-Euro Currencies | 0 | - | 4.42 | 49,226 |
| Word Scramble - European Countries | 0 | - | 4.71 | 113,013 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 83,929 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.93 | 55,742 |
| The Trojan War | 0 | - | 4.81 | 35,731 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 580,595 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 32,260 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 65,002 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 162,970 |
| French Geography Quiz #1 | 0 | - | 4.86 | 30,840 |
| Germany Multiple Choice | 0 | - | 4.80 | 48,937 |
| Olympian Gods Quiz | 0 | - | 4.96 | 455,591 |
| Name that Greek Letter | 0 | - | 4.94 | 294,564 |
| Italy Multiple Choice | 0 | - | 4.72 | 92,995 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 48,182 |
| Provinces of the Netherlands | 0 | - | 4.61 | 33,039 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 45,921 |
| British Acronyms | 0 | - | 4.42 | 43,216 |
| Foods in a Full English Breakfast | 0 | - | 4.41 | 72,886 |
| Beatles Songs Quiz | 0 | - | 4.95 | 204,703 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 272,391 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 253,480 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 243,395 |
| European Geography By Letter - A | 0 | - | 4.55 | 123,770 |
| European Geography By Letter - B #1 | 0 | - | 4.72 | 103,125 |
| European Geography By Letter - C | 0 | - | 4.44 | 104,526 |
| European Geography By Letter - D | 0 | - | 4.52 | 99,132 |
| European Geography By Letter - L | 0 | - | 4.50 | 104,554 |
| European Geography By Letter - M | 0 | - | 4.55 | 114,027 |
| European Geography By Letter - P | 0 | - | 4.79 | 89,192 |
| European Geography By Letter - N | 0 | - | 4.43 | 93,151 |
| European Geography By Letter - V | 0 | - | 4.45 | 85,990 |
| Europe Map Quiz | 0 | - | 5.00 | 4,263,921 |
| Europe Geography Quiz #1 | 0 | - | 4.52 | 66,813 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 67,296 |
| Europe Geography Quiz #4 | 0 | - | 4.56 | 65,982 |
| Europe Geography Quiz #5 | 0 | - | 4.53 | 57,671 |
| European Geography By Letter - S #1 | 0 | - | 4.57 | 93,610 |
| European Geography A-Z | 0 | - | 4.43 | 45,118 |
| European Geography By Letter - B #2 | 0 | - | 4.72 | 61,638 |
| Regions of France | 0 | - | 4.64 | 99,299 |
| France Immigration by Country | 0 | - | 4.80 | 68,448 |
| German Groups of Things | 0 | - | 4.43 | 35,814 |
| Capitals of German States | 0 | - | 4.67 | 26,997 |
| Chancellors of Germany, 1949–present | 0 | - | 4.56 | 13,346 |
| Germany True or False? | 0 | - | 4.64 | 44,180 |
| Largest Islands of Greece | 0 | - | 4.56 | 39,084 |
| Ancient Greek Words | 0 | - | 4.90 | 96,440 |
| Capitals of Italian Regions | 0 | - | 4.52 | 26,024 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,999 |
| Top World Languages | 0 | - | 4.91 | 700,609 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 397,042 |
| The Vikings! | 0 | - | 4.44 | 27,037 |
| Sweden Immigration by Country | 0 | - | 4.66 | 42,008 |
| The Portuguese Empire | 0 | - | 4.54 | 11,301 |
| British Words Quiz #2 | 0 | - | 4.04 | 106,657 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,283 |
| Champions League Top 4 | 0 | - | 4.76 | 102,865 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,336,423 |
| Asia Map Quiz | 0 | - | 4.99 | 776,611 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 30,407 |
| Africa Map Quiz | 0 | - | 5.00 | 1,928,289 |
| Official Languages of South Africa | 0 | - | 4.54 | 24,856 |
| Oceania Map Quiz | 0 | - | 4.97 | 563,566 |
| Australian Capitals | 0 | - | 4.90 | 52,963 |
| European Physical Geography | 0 | - | 4.19 | 31,839 |
| Slovakia... or Slovenia? | 0 | - | 4.79 | 39,521 |
| History of Austria | 0 | - | 4.68 | 16,310 |
| Geography of the French Empire | 0 | - | 4.49 | 25,310 |
| The French Revolution | 0 | - | 4.44 | 21,838 |
| History of France Quiz | 0 | - | 4.55 | 39,521 |
| Figures from Greek Mythology | 0 | - | 4.92 | 168,660 |
| History of Ireland Quiz | 0 | - | 4.43 | 18,799 |
| History of Italy | 0 | - | 4.49 | 29,671 |
| Countries by Official Language | 0 | - | 4.95 | 153,696 |
| Places in their Native Language #1 | 0 | - | 4.87 | 209,263 |
| Places in their Native Language #2 | 0 | - | 4.88 | 112,449 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 247,198 |
| Countries in their Native Language | 0 | - | 4.98 | 177,213 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,180 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 35,239 |
| Geography of the Roman Empire | 0 | - | 4.58 | 48,309 |
| Roman Names for Places | 0 | - | 4.66 | 41,183 |
| Byzantine History | 0 | - | 4.87 | 26,123 |
| History of The Netherlands | 0 | - | 4.42 | 15,659 |
| Kings of Spain Quiz | 0 | - | 4.12 | 12,757 |
| Most Common First Names in Spain | 0 | - | 4.25 | 43,510 |
| Canary Islands | 0 | - | 4.60 | 16,513 |
| Real Madrid 2010's Starting XI | 0 | - | 4.85 | 49,768 |
| British Spellings Quiz | 0 | - | 4.04 | 94,466 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 65,549 |
| British Groups of Things | 0 | - | 4.26 | 79,990 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,665 |
| British Monopoly Board | 0 | - | 4.50 | 38,995 |
| Wonderwall Lyrics | 0 | - | 4.22 | 68,453 |
| Best-Selling British Musical Acts | 0 | - | 4.47 | 43,342 |
| Champions League All-Time Table | 0 | - | 4.17 | 114,851 |
| Champions League Top Goal Scorers | 0 | - | 4.22 | 164,452 |
| South and Central Asia Map Quiz | 0 | - | 4.92 | 78,931 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,274,967 |
| Japanese Language - Katakana Practice | 0 | - | 4.57 | 26,060 |
| Countries of Africa | 0 | - | 5.00 | 2,146,813 |
| African East Coast | 0 | - | 4.97 | 83,489 |
| Western Africa Map Quiz | 0 | - | 4.97 | 60,308 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 39,766 |
| Australia Map Quiz | 0 | - | 4.95 | 317,712 |
| United States Map Quiz | 0 | - | 4.98 | 3,885,377 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 194,483 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.92 | 86,437 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,742 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 334,321 |
| European Geography By Letter - E | 0 | - | 4.19 | 104,910 |
| European Geography By Letter - F | 0 | - | 4.15 | 84,935 |
| European Geography By Letter - H | 0 | - | 4.29 | 88,274 |
| European Geography By Letter - G | 0 | - | 4.24 | 94,746 |
| European Geography By Letter - I | 0 | - | 4.09 | 88,463 |
| European Geography By Letter - K | 0 | - | 4.16 | 64,241 |
| European Geography By Letter - O | 0 | - | 4.27 | 57,512 |
| European Geography By Letter - R | 0 | - | 4.39 | 87,236 |
| European Geography by Letter - W | 0 | - | 4.21 | 78,049 |
| European Geography By Letter - T | 0 | - | 4.39 | 70,671 |
| Europe Geography Quiz #3 | 0 | - | 4.31 | 59,723 |
| European Geography By Letter - S #2 | 0 | - | 4.16 | 46,516 |
| 10 Easternmost Countries in Europe | 0 | - | 4.84 | 91,154 |
| Country Codes of Europe | 0 | - | 3.34 | 12,688 |
| The Only European Country ... | 0 | - | 4.94 | 176,400 |
| Name a Major European City A-Z | 0 | - | 4.33 | 42,568 |
| Seas of Europe | 0 | - | 4.32 | 79,042 |
| Embarrassing Chapters in Russian History | 0 | - | 3.80 | 19,276 |
| Austria... or Australia? | 0 | - | 4.79 | 97,552 |
| Famous Dutch and Belgian People | 0 | - | 4.50 | 16,734 |
| Capitals of French Regions | 0 | - | 4.40 | 14,695 |
| Presidents of France | 0 | - | 4.22 | 19,949 |
| Word Chain - France | 0 | - | 4.38 | 39,820 |
| Famous Germans | 0 | - | 4.39 | 35,106 |
| History of Germany Quiz | 0 | - | 4.35 | 40,002 |
| Ancient Greek Trivia | 0 | - | 4.56 | 63,175 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.80 | 84,291 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.55 | 55,171 |
| Ancient Greece - Multiple Choice | 0 | - | 4.53 | 38,456 |
| Iceland... or Ireland? | 0 | - | 4.72 | 53,831 |
| Famous Italians | 0 | - | 4.40 | 65,698 |
| Italian Foods | 0 | - | 4.25 | 63,649 |
| Capitals in their Native Languages | 0 | - | 4.95 | 127,285 |
| Every Country in its Official/Native Language | 0 | - | 4.96 | 16,970 |
| German-Speaking Countries | 0 | - | 4.88 | 117,221 |
