| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,887 |
| Official European Union Languages | 0 | - | 4.97 | 237,791 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,404 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,038 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,586 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,280 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,792 |
| Slavic Languages | 0 | - | 4.68 | 54,189 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,780 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,664 |
| History of Russia Quiz | 0 | - | 4.49 | 31,858 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,690 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,324 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,577 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,924 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,147 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,516 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,762 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,821 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,580 |
| Slavic Countries | 0 | - | 4.96 | 111,317 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,215 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,801 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,984 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,094 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,376 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,331 |
| Celtic Nations | 0 | - | 4.69 | 46,880 |
| Champions League Winners | 0 | - | 4.92 | 1,001,569 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,652 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,666 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,736 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,444 |
| Geography of Russia | 0 | - | 4.57 | 21,492 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,580 |
| States of Germany | 0 | - | 4.96 | 151,307 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,662 |
| Regions of Italy | 0 | - | 4.92 | 75,304 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 50,740 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,308 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,794 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,824 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,627 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,320 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,042 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,852 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,243 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,139 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,222 |
| Departments of France | 0 | - | 4.93 | 53,450 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,466 |
| England or Wales? | 0 | - | 4.94 | 45,518 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,390 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,518 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,633 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,346 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,996 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,188 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,611 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,982 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,744 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,687 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,661 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,925 |
| The Trojan War | 0 | - | 4.83 | 39,591 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,071 |
| Name that Greek Letter | 0 | - | 4.93 | 322,722 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,273 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,535 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,323 |
| Roman Emperors | 0 | - | 4.95 | 119,408 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,378 |
| Languages of Spain | 0 | - | 4.36 | 23,246 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,468 |
| Famous Russians | 0 | - | 4.16 | 23,782 |
| Word Chain - Russia | 0 | - | 4.33 | 15,729 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,661 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,171 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,733 |
| History of Italy | 0 | - | 4.55 | 31,911 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,520 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,585 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,114 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,502 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,521 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,728 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,161 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,133 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,021 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,475 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,381 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,053 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,829 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,463 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,646 |
| Europe Map Quiz | 0 | - | 5.00 | 4,748,586 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,156 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,809 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,093 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,136 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,822 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,281 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,925 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,790 |
| Capitals of French Regions | 0 | - | 4.45 | 16,025 |
| Regions of France | 0 | - | 4.77 | 120,087 |
| France Immigration by Country | 0 | - | 4.72 | 76,268 |
| Famous Germans | 0 | - | 4.50 | 54,874 |
| German Groups of Things | 0 | - | 4.46 | 38,397 |
| Capitals of German States | 0 | - | 4.74 | 28,901 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,226 |
| Germany True or False? | 0 | - | 4.61 | 48,675 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,765 |
| Ancient Greek Words | 0 | - | 4.93 | 111,175 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,960 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,876 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,109 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,167 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,903 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,481 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,197 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,230 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,317 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,063 |
| Top World Languages | 0 | - | 4.92 | 818,161 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,734 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,122 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,074 |
| Australian Capitals | 0 | - | 4.92 | 62,670 |
| European Physical Geography | 0 | - | 4.26 | 33,436 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,057 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,874 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,532 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,256 |
| Romania Country Quiz | 0 | - | 4.63 | 53,617 |
| History of Austria | 0 | - | 4.70 | 17,814 |
| Geography of the French Empire | 0 | - | 4.45 | 27,007 |
| The French Revolution | 0 | - | 4.46 | 23,876 |
| France Multiple Choice | 0 | - | 4.38 | 40,687 |
| History of France | 0 | - | 4.59 | 56,673 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,441 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,991 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,406 |
| The Vikings! | 0 | - | 4.46 | 28,299 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,934 |
| The Portuguese Empire | 0 | - | 4.58 | 12,034 |
| American to British Word Translation | 0 | - | 4.13 | 138,444 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,471 |
| Champions League Top 4 | 0 | - | 4.77 | 135,167 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,444,609 |
| Asia Map Quiz | 0 | - | 4.99 | 911,804 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,818 |
| Countries by Official Language | 0 | - | 4.95 | 194,218 |
| Places in their Native Language #1 | 0 | - | 4.84 | 240,767 |
| Places in their Native Language #2 | 0 | - | 4.83 | 129,241 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,027 |
| Countries in their Native Language | 0 | - | 4.99 | 197,820 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,977 |
| Countries of Africa | 0 | - | 5.00 | 2,523,703 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,358 |
| African East Coast | 0 | - | 4.96 | 95,604 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,437 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,261 |
| Australia Map Quiz | 0 | - | 4.94 | 343,426 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,633 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,278 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,503 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,115 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,434 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,464 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,880 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,135 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,752 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,698 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,384 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,101 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,447 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,549 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,670 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,452 |
| European Geography A-Z | 0 | - | 4.29 | 49,131 |
| Country Codes of Europe | 0 | - | 3.43 | 13,682 |
| The Only European Country ... | 0 | - | 4.91 | 215,392 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,461 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,345 |
| Seas of Europe | 0 | - | 4.37 | 84,514 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 27,942 |
| Slovenia Country Quiz | 0 | - | 4.55 | 30,625 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,277 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,583 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,776 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,638 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,304 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,910 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,594 |
| Austria... or Australia? | 0 | - | 4.68 | 104,140 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,006 |
| Presidents of France | 0 | - | 4.25 | 23,995 |
| France A-Z | 0 | - | 4.16 | 38,121 |
| Word Chain - France | 0 | - | 4.38 | 42,692 |
