27 featured articles were promoted this month.

• The Hi-Level (nominated by Mackensen) is a type of bilevel intercity railroad passenger car used in the United States. The Budd Company designed it in the 1950s for the Atchison, Topeka and Santa Fe Railway.
• Sonic Adventure (nominated by Joebro64) is a 1998 platform game for Sega's Dreamcast, and the first main Sonic the Hedgehog game to feature 3D gameplay. The story follows Sonic the Hedgehog, Miles "Tails" Prower, Knuckles the Echidna, Amy Rose, Big the Cat, and E-102 Gamma in their quests to collect the seven Chaos Emeralds and stop Doctor Robotnik from unleashing Chaos, an ancient evil. Sonic Adventure received critical acclaim and, with over two million copies sold by 2006, became the Dreamcast's bestseller. Reviewers lauded the game's visuals and gameplay, calling it a major technological advance for video games; some even speculated that it could popularize the Dreamcast and re-establish Sega as the dominant console manufacturer after the relatively unsuccessful Saturn.
• Dubnium (nominated by R8R) is a synthetic chemical element with symbol Db and atomic number 105. Dubnium is highly radioactive: the most stable known isotope, dubnium-268, has a half-life of just over a day. This greatly limits the extent of research on dubnium. Dubnium does not occur naturally on Earth and is produced artificially.
• Dilophosaurus (nominated by FunkMonk) is a genus of theropod dinosaur that lived in what is now North America during the Early Jurassic, about 193 million years ago. It was designated as the state dinosaur of Connecticut in 2017.
• The Shorwell helmet (nominated by Usernameunique) is an Anglo-Saxon helmet from the early to mid-sixth century AD found near Shorwell on the Isle of Wight in southern England. It was one of the grave goods of a high-status Anglo-Saxon warrior, and was found with other objects such as a pattern-welded sword and hanging bowl. One of only six known Anglo-Saxon helmets, alongside those from Benty Grange, Sutton Hoo, Coppergate, Wollaston, and Staffordshire, it is the sole example to derive from the continental Frankish style rather than the contemporaneous Northern "crested helmets" used in England and Scandinavia.
• The Borodino-class battlecruisers (nominated by Sturmvogel 66) were a group of four battlecruisers ordered by the Imperial Russian Navy before World War I. Also referred to as the Izmail class, they were laid down in late 1912 at Saint Petersburg for service with the Baltic Fleet. Three of the four ships were launched in 1915 and the fourth in 1916. Work on the gun turrets lagged, and it became evident that Russian industry would not be able to complete the ships during the war. The Russian Revolution of 1917 halted all work on the ships, which was never resumed.
• Porlock Stone Circle (nominated by Midnightblueowl) is a stone circle located on Exmoor, near the village of Porlock in the south-western English county of Somerset. The Porlock ring is part of a tradition of stone circle construction that spread throughout much of Britain, Ireland, and Brittany during the Late Neolithic and Early Bronze Age, over a period between 3,300 and 900 BCE. The purpose of such monuments is unknown, although archaeologists speculate that the stones represented supernatural entities for the circles' builders.
• André Messager (nominated by Ssilvers and Tim riley) was a French composer, organist, pianist and conductor. His compositions include eight ballets and thirty opéras comiques, opérettes and other stage works, among which his ballet Les Deux Pigeons (1886) and opéra comique Véronique (1898) have had lasting success; Les P'tites Michu (1897) and Monsieur Beaucaire (1919) were also popular internationally.
• Buckton Castle (nominated by Richard Nevell) was a medieval enclosure castle near Carrbrook in Stalybridge, Greater Manchester, England. It was surrounded by a 2.8-metre-wide (9 ft) stone curtain wall and a ditch 10 metres (33 ft) wide by 6 metres (20 ft) deep. Though it only survives as buried remains and is overgrown with heather and peat, Buckton is one of the earliest stone castles in North West England. It was probably built and demolished in the 12th century. The earliest surviving record of the site dates from 1360, by which time it was lying derelict. The few finds retrieved during archaeological investigations indicates that Buckton Castle may not have been completed.
• WestJet Encore (nominated by Vanguard10) is a Canadian regional airline that began operations in 2013. It is owned by WestJet Airlines, Ltd. which also is the holding company for WestJet Airlines. The airline is headquartered in Calgary, Alberta. In response to internal marketing studies about future growth limitations by WestJet Airlines operating only Boeing 737 aircraft, WestJet Encore was formed to allow increased frequency of flights by using smaller aircraft, as well as to commence service to routes with less traffic. The airline operates Bombardier Q400 NextGen aircraft, a variant of the Bombardier Dash 8. The airline is the fourth largest operator of the Bombardier Q400 series. Pilot bases are in Calgary and Toronto, where many WestJet Encore flights operate. Air service originally started in Western Canada, but routes in the eastern half of the country were added later.
• "The Riddle of the Sphinx" (Inside No. 9) (nominated by Josh Milburn) is the third episode of the third series of the British dark comedy anthology television programme Inside No. 9. It first aired, on BBC Two, on 28 February 2017.
• The Boat Race 2018 (nominated by The Rambling Man) took place on 24 March 2018. Held annually, The Boat Race is a side-by-side rowing race between crews from the universities of Oxford and Cambridge along a 4.2-mile (6.8 km) tidal stretch of the River Thames in south-west London. For the third time in the history of the event, the men's, women's and both reserves' races were all held on the Tideway on the same day. The women's race was the first event of the day, and saw Cambridge lead from the start, eventually winning by a considerable margin to record their second consecutive victory, and taking the overall record in the Women's Boat Race to 43–30 in their favour. The men's race was the final event of the day and completed a whitewash as Cambridge won, their second victory in three years, and taking the overall record to 83–80 in their favour. The races were watched by around a quarter of a million spectators live, and were broadcast around the world by a variety of broadcasters. The two main races were also available for the second time as a live stream using YouTube.
• In the Rhine Campaign of 1796 (nominated by auntieruth) ), two First Coalition armies under the overall command of Archduke Charles outmaneuvered and defeated two French Republican armies. This was the last campaign of the War of the First Coalition, part of the French Revolutionary Wars.
• The Flora of Madagascar (nominated by Tylototriton) consists of more than 12,000 species of vascular and non-vascular plants and a poorly known number of fungi. Around 83% of Madagascar's vascular plants are only found on the island. These endemics include five plant families, 85% of the over 900 orchid species, around 200 species of palms, and such emblematic species as the traveller's tree, six species of baobab and the Madagascar periwinkle. The high degree of endemism is due to Madagascar's long isolation since its separation from the African and Indian landmasses in the Mesozoic, 150–160 and 84–91 million years ago, respectively. However, few plant lineages remain from the ancient Gondwanan flora; most extant plant groups immigrated via across-ocean dispersal well after continental break-up.
• John Mowbray, 3rd Duke of Norfolk (nominated by Serial Number 54129) was a fifteenth-century English magnate who, despite having a relatively short political career, played a significant role in the early years of the Wars of the Roses.
• Central Link (nominated by SounderBruce) is a light rail line in Seattle, Washington, United States, and part of Sound Transit's Link light rail system. It serves 16 stations in the cities of Seattle, SeaTac, and Tukwila, traveling 20 miles (32 km) between University of Washington and Angle Lake stations. The line connects the University District, Downtown Seattle, the Rainier Valley, and Seattle–Tacoma International Airport. Central Link carried over 23 million total passengers in 2017, with an average of 72,000 daily passengers on weekdays.
• The Ford Piquette Avenue Plant (nominated by Jackdude101) is a former factory located within the Milwaukee Junction area of Detroit, Michigan, in the United States. Built in 1904, it was the second center of automobile production for the Ford Motor Company, after the Ford Mack Avenue Plant. At the Piquette Avenue Plant, the company created and first produced the Ford Model T, the car credited with initiating the mass use of automobiles in the United States. It was also the first factory where more than 100 cars were assembled in one day. While it was headquartered at the Piquette Avenue Plant, Ford Motor Company became the biggest US-based automaker, and it would remain so until the mid-1920s. The factory was used by the company until 1910.
• Simon Hatley (nominated by Wehwalt) was an English sailor involved in two hazardous privateering voyages to the South Pacific Ocean. On the second voyage, with his ship beset by storms south of Cape Horn, Hatley shot an albatross, an incident immortalised by Samuel Taylor Coleridge in his poem, The Rime of the Ancient Mariner.
• Sonic X-treme (nominated by Red Phoenix) was a platform game developed by Sega Technical Institute from 1994 until its cancellation in 1997. X-treme was intended to be the first fully 3D Sonic the Hedgehog game and the first original Sonic game for the Sega Saturn. Its concepts built on past Sonic games while introducing elements to take Sonic into the 3D era of video games. The storyline followed Sonic on his journey to stop Dr. Robotnik stealing six magic rings from Tiara Boobowski and her father.
• The 2007 AT&T 250 (nominated by Laser brain) was a NASCAR Busch Series stock car race that took place on June 23, 2007. Held at the Milwaukee Mile in West Allis, Wisconsin, the race was the 17th of 35 in the 2007 NASCAR Busch Series season. Aric Almirola of Joe Gibbs Racing (JGR) was the listed winner of the race, Richard Childress Racing's Scott Wimmer finished second, and Braun Racing's Jason Leffler finished third.
• Mark XIV bomb sight (nominated by Laser brain), a bombsight developed by Royal Air Force (RAF) Bomber Command during the Second World War. Production of a slightly modified version was also undertaken in the United States as the Sperry T-1, which was interchangeable with UK-built version.
• Messier 87 (nominated by AhmadLX) is a supergiant elliptical galaxy in the constellation Virgo. One of the most massive galaxies in the local Universe, it is notable for its large population of globular clusters—about 12,000 compared to the 150–200 orbiting the Milky Way—and its jet of energetic plasma that originates at the core and extends at least 1,500 parsecs (4,900 light-years), travelling at relativistic speed. It is one of the brightest radio sources in the sky, and a popular target for both amateur and professional astronomers.
• SMS Braunschweig (nominated by Parsecboy) was the first of five pre-dreadnought battleships of the Braunschweig class built for the German Kaiserliche Marine(Imperial Navy). She was launched in December 1902. She was named after the Duchy of Brunswick (German: Braunschweig). Like all other pre-dreadnoughts built at the turn of the century, Braunschweig was quickly made obsolete by the launching of the revolutionary HMS Dreadnought in 1906; as a result, her career as a front-line battleship was cut short.
• The cooperative pulling paradigm (nominated by Edwininlondon) is used by ethologists, comparative psychologists, and evolutionary psychologists try to understand how cooperation works and how and when it may have evolved. Two or more animals pull rewards towards themselves via an apparatus that they can not successfully operate alone. Chimpanzees, bonobos, orangutans, capuchins, tamarins, wolves, elephants, ravens, and keas appear to understand the requirements of the task. The conclusions regarding cooperation are mixed and complex.
• The First Battle of Dernancourt (nominated by Peacemaker67) was fought on 28 March 1918 near Dernancourt in northern France during World War I. It involved a force of the German 2nd Army attacking elements of the VII Corps, which included British and Australian troops, and resulted in a complete defeat of the German assault.
• The Socialist Soviet Republic of Abkhazia (nominated by Kaiser matias) was a short-lived republic within the Caucasus region of the Soviet Union that covered the territory of Abkhazia, and existed from 31 March 1921 to 19 February 1931. Formed in the aftermath of the Red Army invasion of Georgia in 1921, it was independent until 16 December 1921, when it agreed to a treaty uniting it with the Georgian Soviet Socialist Republic (Georgian SSR). The SSR Abkhazia was largely similar to an autonomous Soviet republic, though it retained de facto independence from Georgia, being given certain features only full union republics had, like its own military units. Through its status as a "treaty republic" with Georgia, Abkhazia joined the Transcaucasian Soviet Federative Socialist Republic, which united Armenian, Azerbaijani, and Georgian SSRs into one federal unit, when the latter was formed in 1922. The SSR Abkhazia was abolished in 1931 and replaced with the Abkhaz Autonomous Soviet Socialist Republic within the Georgian SSR.
• Edward the Elder (nominated by Dudley Miles) was King of the Anglo-Saxons from 899 until his death. He was the elder son of Alfred the Great and his wife Ealhswith. When Edward succeeded to the throne, he had to defeat a challenge from his cousin Æthelwold, who had a strong claim as the son of Alfred's elder brother and predecessor, Æthelred.

13 featured lists were promoted this week.

• List of Hot Country Songs number ones of 2007 (nominated by ChrisTheDude) It's no surprise to find casual sex, excessive drinking and financial difficulties on a list of country music hits, but what is geek chic doing here? Kudos to Brad Paisley for going out on a limb.
• List of Wales international footballers (nominated by Kosack) All about the Wales national football team – the third oldest international football team, representing the country since 1876.
• List of international rugby union tries by Shane Williams (nominated by The Rambling Man) Williams scored 58 tries, the most for any Wales international.
• Kollegah discography (nominated by Lirim.Z) Two things to take away – first: German rap is a thing. Second: German rappers don't just have songs titled "Stiernackenkommando" but also "Ave Maria" (hey, Chris Cornell did it too).
• List of international goals scored by David Villa (nominated by The Rambling Man) An impressive roster from 2005 to 2013, then just three points scored in the United States. Turns out Major League Soccer isn't good for this kind of scorekeeping.
• List of Padma Bhushan award recipients (2010–2019) (nominated by Vivvt) Since 2010, twenty-eight foreign recipients – nineteen from the United States, three from the United Kingdom, and one each from Bangladesh, Germany, Ireland, Singapore, Russia, and Thailand – have received the third-highest civilian award of the Republic of India.
• List of 1968 Winter Olympics medal winners (nominated by Courcelles) X Olympic Winter Games in Grenoble, France, added a biathlon relay.
• List of Queens Park Rangers F.C. seasons (nominated by Miyagawa) Starting back in 1890 when The Football Association was a mere twenty-something.
• List of awards and nominations received by Regine Velasquez (nominated by Pseud 14) In addition to over 70 competitive awards, Filipino singer and actress Regine Velasquez has been honored with four lifetime achievement awards, including the Awit Awards' Dangal ng Musikang Pilipino, the Star Awards for Music's Natatanging Alagad Ng Musika, FAMAS Awards' Golden Artist and Myx Music's Magna Award.
• Theory of a Deadman discography (nominated by Miss Sarita) Sixty-six studio albums, extended plays, singles and music videos from the Canadian rock band, eh?
• London station group (nominated by Ritchie333) Construction of most of these eighteen stations around the edge of central London in the mid-19th century entailed the demolition of poor properties, particularly south of the River Thames. Although it caused blight then, in the 21st century, they have attracted occupants and businesses.
• List of international goals scored by Didier Drogba (nominated by The Rambling Man) Hat-tricks and riots both occurred during the career of the Ivorian professional association footballer who represented the Ivory Coast national team from 2002 to 2014.
• List of Raven Software games (nominated by PresN) The legendary Heretic and Hexen titles meet Marvel, Star Trek and Star Wars franchisers here.

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One featured topic was promoted this week.

• The Final Fantasy series (nominated by PresN) Final Fantasy is a science fiction media franchise created by Hironobu Sakaguchi, and developed and owned by Square Enix (formerly Square). The franchise centers on a series of fantasy and science fantasy role-playing video games (RPGs). The eponymous first game in the series, published in 1987, was conceived by Sakaguchi as his last-ditch effort in the game industry; the title was a success and spawned sequels. The video game series has since branched into numerous other genres, and has been commercially and critically successful; it is Square Enix's best selling video game franchise, with more than 110 million units sold, and is one of the best-selling video game franchises of all time.

Apart from these featured contents, 144 good articles were promoted.