| Official European Union Languages | 0 | - | 4.98 | 198,675 |
| European Countries in their Native Language | 0 | - | 4.99 | 142,828 |
| Slavic Languages | 0 | - | 4.58 | 48,393 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 453,747 |
| Count to 10 in Europe: Pro | 0 | - | 4.79 | 60,572 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 381,766 |
| Countries that Beat Switzerland | 0 | - | 4.85 | 37,239 |
| Europe Geography Decoder | 0 | - | 4.89 | 62,744 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.82 | 38,903 |
| Top European Languages on a Map | 0 | - | 4.76 | 116,665 |
| Russia Multiple Choice | 0 | - | 4.56 | 37,818 |
| Top Asian Languages on a Map | 0 | - | 4.93 | 59,857 |
| Countries where Arabic is an Official Language | 0 | - | 4.83 | 51,864 |
| Top African Languages on a Map | 0 | - | 4.91 | 51,198 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 106,012 |
| Most Spoken Languages in Canada | 0 | - | 4.82 | 46,330 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.89 | 78,993 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 283,013 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 113,346 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 73,710 |
| Eastern Europe Map Quiz | 0 | - | 4.88 | 114,680 |
| Slavic Countries | 0 | - | 4.96 | 99,758 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 20,698 |
| Champions League Winners | 0 | - | 4.90 | 837,728 |
| Celtic Nations | 0 | - | 4.76 | 44,506 |
| Regions of Spain Quiz | 0 | - | 4.85 | 93,443 |
| Cantons of Switzerland | 0 | - | 4.96 | 39,728 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,168 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 263,340 |
| Catholic Countries in Europe | 0 | - | 4.87 | 82,677 |
| Category Elimination - European Geography #3 | 0 | - | 4.84 | 64,451 |
| History of Russia Quiz | 0 | - | 4.48 | 29,731 |
| Federal Subjects of Russia | 0 | - | 4.95 | 110,003 |
| Geography of Russia | 0 | - | 4.54 | 20,077 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 100,912 |
| States of Germany | 0 | - | 4.94 | 121,521 |
| Germany Immigration by Country | 0 | - | 4.90 | 68,847 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,049 |
| Counties of Ireland | 0 | - | 4.89 | 157,206 |
| Regions of Italy | 0 | - | 4.88 | 59,476 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,369 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,304 |
| Switzerland Immigration by Country | 0 | - | 4.81 | 19,713 |
| England or Wales? | 0 | - | 4.93 | 39,821 |
| All Champions League Teams Ever | 0 | - | 4.89 | 102,335 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,422 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 198,092 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 243,528 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 140,974 |
| Word Chain - Russia | 0 | - | 4.41 | 14,743 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,253 |
| Roman Emperors | 0 | - | 4.95 | 94,660 |
| Spanish Immigration by Country | 0 | - | 4.58 | 51,503 |
| Languages of Spain | 0 | - | 4.34 | 21,183 |
| Pre-Euro Currencies | 0 | - | 4.42 | 49,144 |
| Word Scramble - European Countries | 0 | - | 4.71 | 112,821 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 83,265 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.93 | 55,488 |
| The Trojan War | 0 | - | 4.81 | 35,622 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 579,381 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 31,935 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 64,924 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 162,714 |
| French Geography Quiz #1 | 0 | - | 4.86 | 30,752 |
| Germany Multiple Choice | 0 | - | 4.80 | 48,818 |
| Olympian Gods Quiz | 0 | - | 4.96 | 454,912 |
| Name that Greek Letter | 0 | - | 4.94 | 294,011 |
| Italy Multiple Choice | 0 | - | 4.72 | 92,713 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 47,990 |
| Provinces of the Netherlands | 0 | - | 4.61 | 32,933 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 45,880 |
| British Acronyms | 0 | - | 4.42 | 43,175 |
| Foods in a Full English Breakfast | 0 | - | 4.41 | 72,688 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.87 | 26,310 |
| Beatles Songs Quiz | 0 | - | 4.94 | 204,109 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 271,621 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 252,796 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 242,898 |
| European Geography By Letter - A | 0 | - | 4.55 | 123,570 |
| European Geography By Letter - B #1 | 0 | - | 4.72 | 102,968 |
| European Geography By Letter - C | 0 | - | 4.44 | 104,371 |
| European Geography By Letter - D | 0 | - | 4.52 | 98,969 |
| European Geography By Letter - L | 0 | - | 4.50 | 104,405 |
| European Geography By Letter - M | 0 | - | 4.55 | 113,891 |
| European Geography By Letter - P | 0 | - | 4.79 | 89,058 |
| European Geography By Letter - N | 0 | - | 4.43 | 93,051 |
| European Geography By Letter - V | 0 | - | 4.45 | 85,888 |
| Europe Map Quiz | 0 | - | 5.00 | 4,252,598 |
| Europe Geography Quiz #1 | 0 | - | 4.52 | 66,710 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 67,190 |
| Europe Geography Quiz #4 | 0 | - | 4.56 | 65,892 |
| Europe Geography Quiz #5 | 0 | - | 4.53 | 57,594 |
| European Geography By Letter - S #1 | 0 | - | 4.57 | 93,503 |
| European Geography A-Z | 0 | - | 4.43 | 45,036 |
| European Geography By Letter - B #2 | 0 | - | 4.72 | 61,482 |
| Regions of France | 0 | - | 4.64 | 98,937 |
| France Immigration by Country | 0 | - | 4.80 | 68,259 |
| German Groups of Things | 0 | - | 4.43 | 35,751 |
| Capitals of German States | 0 | - | 4.67 | 26,971 |
| Chancellors of Germany, 1949–present | 0 | - | 4.56 | 13,308 |
| Germany True or False? | 0 | - | 4.64 | 44,083 |
| Largest Islands of Greece | 0 | - | 4.56 | 38,881 |
| Ancient Greek Words | 0 | - | 4.90 | 96,168 |
| Capitals of Italian Regions | 0 | - | 4.52 | 25,988 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,334 |
| Top World Languages | 0 | - | 4.91 | 698,129 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 396,140 |
| The Vikings! | 0 | - | 4.44 | 27,010 |
| Sweden Immigration by Country | 0 | - | 4.66 | 41,892 |
| The Portuguese Empire | 0 | - | 4.54 | 11,286 |
| British Words Quiz #2 | 0 | - | 4.03 | 106,580 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,175 |
| Champions League Top 4 | 0 | - | 4.76 | 101,953 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,333,819 |
| Asia Map Quiz | 0 | - | 4.99 | 773,233 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 30,364 |
| Africa Map Quiz | 0 | - | 5.00 | 1,924,362 |
| Official Languages of South Africa | 0 | - | 4.54 | 24,842 |
| Oceania Map Quiz | 0 | - | 4.97 | 562,133 |
| Australian Capitals | 0 | - | 4.90 | 52,937 |
| European Physical Geography | 0 | - | 4.19 | 31,802 |
| Slovakia... or Slovenia? | 0 | - | 4.79 | 39,480 |
| History of Austria | 0 | - | 4.68 | 16,273 |
| Geography of the French Empire | 0 | - | 4.49 | 24,992 |
| The French Revolution | 0 | - | 4.44 | 21,795 |
| History of France Quiz | 0 | - | 4.55 | 39,471 |
| Figures from Greek Mythology | 0 | - | 4.92 | 168,347 |
| History of Ireland Quiz | 0 | - | 4.43 | 18,774 |
| History of Italy | 0 | - | 4.49 | 29,642 |
| Countries by Official Language | 0 | - | 4.95 | 153,369 |
| Places in their Native Language #1 | 0 | - | 4.87 | 208,782 |
| Places in their Native Language #2 | 0 | - | 4.88 | 112,259 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,450 |
| Countries in their Native Language | 0 | - | 4.98 | 176,862 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 89,814 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 35,184 |
| Geography of the Roman Empire | 0 | - | 4.58 | 47,987 |
| Roman Names for Places | 0 | - | 4.66 | 41,042 |
| Byzantine History | 0 | - | 4.87 | 26,069 |
| History of The Netherlands | 0 | - | 4.42 | 15,631 |
| Kings of Spain Quiz | 0 | - | 4.12 | 12,735 |
| Most Common First Names in Spain | 0 | - | 4.25 | 43,472 |
| Canary Islands | 0 | - | 4.60 | 16,490 |
| Real Madrid 2010's Starting XI | 0 | - | 4.85 | 49,261 |
| British Spellings Quiz | 0 | - | 4.04 | 94,391 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 65,464 |
| British Groups of Things | 0 | - | 4.26 | 79,929 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,640 |
| British Monopoly Board | 0 | - | 4.50 | 38,681 |
| Wonderwall Lyrics | 0 | - | 4.22 | 68,305 |
| Best-Selling British Musical Acts | 0 | - | 4.47 | 43,275 |
| Champions League All-Time Table | 0 | - | 4.17 | 114,090 |
| Champions League Top Goal Scorers | 0 | - | 4.22 | 163,653 |
| South and Central Asia Map Quiz | 0 | - | 4.92 | 78,564 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,272,903 |
| Japanese Language - Katakana Practice | 0 | - | 4.57 | 25,762 |
| Countries of Africa | 0 | - | 5.00 | 2,139,362 |
| African East Coast | 0 | - | 4.97 | 83,230 |
| Western Africa Map Quiz | 0 | - | 4.97 | 59,910 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 39,635 |
| Australia Map Quiz | 0 | - | 4.94 | 317,185 |
| United States Map Quiz | 0 | - | 4.98 | 3,879,850 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 193,709 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.92 | 86,392 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,433 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 333,715 |
| European Geography By Letter - E | 0 | - | 4.19 | 104,758 |
| European Geography By Letter - F | 0 | - | 4.14 | 84,595 |
| European Geography By Letter - H | 0 | - | 4.29 | 88,140 |
| European Geography By Letter - G | 0 | - | 4.24 | 94,613 |
| European Geography By Letter - I | 0 | - | 4.09 | 88,353 |
| European Geography By Letter - K | 0 | - | 4.16 | 64,141 |
| European Geography By Letter - O | 0 | - | 4.27 | 57,429 |
| European Geography By Letter - R | 0 | - | 4.39 | 87,137 |
| European Geography by Letter - W | 0 | - | 4.21 | 77,968 |
| European Geography By Letter - T | 0 | - | 4.39 | 70,567 |
| Europe Geography Quiz #3 | 0 | - | 4.31 | 59,645 |
| European Geography By Letter - S #2 | 0 | - | 4.16 | 46,444 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 90,779 |
| Country Codes of Europe | 0 | - | 3.34 | 12,668 |
| The Only European Country ... | 0 | - | 4.94 | 175,867 |
| Name a Major European City A-Z | 0 | - | 4.33 | 42,455 |
| Seas of Europe | 0 | - | 4.32 | 78,910 |
| Embarrassing Chapters in Russian History | 0 | - | 3.80 | 19,257 |
| Austria... or Australia? | 0 | - | 4.79 | 97,398 |
| Famous Dutch and Belgian People | 0 | - | 4.50 | 16,711 |
| Capitals of French Regions | 0 | - | 4.40 | 14,678 |
| Presidents of France | 0 | - | 4.22 | 19,896 |
| Word Chain - France | 0 | - | 4.38 | 39,749 |
| Famous Germans | 0 | - | 4.39 | 35,086 |
| History of Germany Quiz | 0 | - | 4.35 | 39,957 |
| Ancient Greek Trivia | 0 | - | 4.56 | 63,092 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.80 | 83,934 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.58 | 54,948 |
| Ancient Greece - Multiple Choice | 0 | - | 4.53 | 38,379 |
| Iceland... or Ireland? | 0 | - | 4.72 | 53,727 |
| Famous Italians | 0 | - | 4.40 | 65,480 |
| Italian Foods | 0 | - | 4.25 | 63,424 |
| Capitals in their Native Languages | 0 | - | 4.95 | 127,092 |
| German-Speaking Countries | 0 | - | 4.87 | 117,105 |
