| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,688 |
| Official European Union Languages | 0 | - | 4.97 | 237,171 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,033 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,743 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,489 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,642 |
| Slavic Languages | 0 | - | 4.68 | 54,045 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,594 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,604 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,280 |
| History of Russia Quiz | 0 | - | 4.49 | 31,806 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,728 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,424 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,720 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,259 |
| Celtic Nations | 0 | - | 4.69 | 46,837 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,942 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,191 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,548 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,421 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,327 |
| Slavic Countries | 0 | - | 4.96 | 110,992 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,090 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,779 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,807 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,290 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,468 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,338 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,426 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,962 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,306 |
| States of Germany | 0 | - | 4.96 | 150,435 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,139 |
| Regions of Italy | 0 | - | 4.92 | 74,890 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,938 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,584 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,457 |
| Champions League Winners | 0 | - | 4.92 | 997,782 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,199 |
| Geography of Russia | 0 | - | 4.57 | 21,445 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,609 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,751 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,569 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,896 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,520 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,439 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,943 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,094 |
| Departments of France | 0 | - | 4.93 | 52,988 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,400 |
| England or Wales? | 0 | - | 4.94 | 45,389 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,735 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,475 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,611 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,078 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,318 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,931 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,445 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,777 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,668 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,587 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,552 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,884 |
| Name that Greek Letter | 0 | - | 4.94 | 321,948 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,453 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,276 |
| Languages of Spain | 0 | - | 4.36 | 23,170 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,733 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 217,200 |
| Famous Russians | 0 | - | 4.16 | 23,742 |
| Word Chain - Russia | 0 | - | 4.33 | 15,694 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,595 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,979 |
| The Trojan War | 0 | - | 4.83 | 39,477 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,757 |
| History of Italy | 0 | - | 4.55 | 31,854 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,271 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,128 |
| Roman Emperors | 0 | - | 4.95 | 118,668 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,504 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,012 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,333 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,446 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,503 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,985 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,948 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,798 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,305 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,061 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,915 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,696 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,073 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,405 |
| Europe Map Quiz | 0 | - | 5.00 | 4,736,111 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,031 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,665 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,991 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,025 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,661 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,835 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,640 |
| Capitals of French Regions | 0 | - | 4.45 | 15,996 |
| Regions of France | 0 | - | 4.78 | 119,493 |
| France Immigration by Country | 0 | - | 4.72 | 76,037 |
| Famous Germans | 0 | - | 4.50 | 54,694 |
| German Groups of Things | 0 | - | 4.46 | 38,333 |
| Capitals of German States | 0 | - | 4.74 | 28,847 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,127 |
| Germany True or False? | 0 | - | 4.61 | 48,573 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,571 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,086 |
| Ancient Greek Words | 0 | - | 4.92 | 110,842 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,659 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,901 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,091 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,094 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,431 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,492 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,496 |
| Top World Languages | 0 | - | 4.92 | 814,484 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,254 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,057 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,328 |
| Australian Capitals | 0 | - | 4.92 | 62,610 |
| European Physical Geography | 0 | - | 4.26 | 33,386 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,923 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,806 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,388 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,100 |
| Romania Country Quiz | 0 | - | 4.63 | 53,441 |
| History of Austria | 0 | - | 4.70 | 17,773 |
| Geography of the French Empire | 0 | - | 4.45 | 26,960 |
| The French Revolution | 0 | - | 4.46 | 23,814 |
| France Multiple Choice | 0 | - | 4.38 | 40,651 |
| History of France | 0 | - | 4.59 | 56,270 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,400 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,148 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,686 |
| The Vikings! | 0 | - | 4.46 | 28,260 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,742 |
| The Portuguese Empire | 0 | - | 4.54 | 12,004 |
| American to British Word Translation | 0 | - | 4.12 | 136,416 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,304 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,416 |
| Champions League Top 4 | 0 | - | 4.77 | 134,169 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,030 |
| Asia Map Quiz | 0 | - | 4.99 | 908,216 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,677 |
| Countries by Official Language | 0 | - | 4.95 | 192,983 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,689 |
| Places in their Native Language #2 | 0 | - | 4.83 | 123,074 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,434 |
| Countries in their Native Language | 0 | - | 4.99 | 196,842 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,011 |
| Countries of Africa | 0 | - | 5.00 | 2,512,287 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,942 |
| African East Coast | 0 | - | 4.96 | 95,191 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,064 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,960 |
| Australia Map Quiz | 0 | - | 4.94 | 342,762 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,084 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,453 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,339 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,326 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,641 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,294 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,732 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,964 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,353 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,559 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,235 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,983 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,342 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,442 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,556 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,819 |
| European Geography A-Z | 0 | - | 4.28 | 49,041 |
| Country Codes of Europe | 0 | - | 3.46 | 13,661 |
| The Only European Country ... | 0 | - | 4.91 | 214,278 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,819 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,248 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,820 |
| Austria... or Australia? | 0 | - | 4.68 | 103,949 |
| Presidents of France | 0 | - | 4.25 | 23,930 |
| Word Chain - France | 0 | - | 4.38 | 42,610 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,811 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,799 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,284 |
| Italian Foods | 0 | - | 4.31 | 72,288 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,035 |
| The Mafia Quiz | 0 | - | 4.46 | 23,217 |
| History of The Netherlands | 0 | - | 4.46 | 17,337 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,970 |
| Canary Islands | 0 | - | 4.61 | 17,419 |
| Real Madrid 2010s Starting XI | 0 | - | 4.88 | 66,353 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,234 |
| British Spellings | 0 | - | 4.07 | 99,283 |
| British Groups of Things | 0 | - | 4.25 | 82,717 |
| British Acronyms | 0 | - | 4.39 | 45,653 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,970 |
