All articles starting with M
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Mega Man X Legacy Collection
Mega Man X Legacy Collection (volumes 1 and 2) is Capcom's 2018 compilation of all eight Mega Man X games on PS4, Switch, Xbox One, and PC, with X Challenge mode, museum, and Rookie Hunter Mode.
Mega Man Zero
Mega Man Zero (RockMan Zero) is a 2002 Inti Creates/Capcom Game Boy Advance action-platformer starring Zero, set 100 years after Mega Man X, with mission-based progression, upgradable weapons, Cyber-Elves, and a ranking system; Metacritic 82.
Mega Man Zero 2
Mega Man Zero 2 (RockMan Zero 2) is a 2003 Game Boy Advance action platformer by Inti Creates and Capcom, the second Mega Man Zero game, known for its S-to-F rank system, EX Skills, 74 Cyber-Elves, and Chain Rod.
Mega Millions
Mega Millions, formerly The Big Game (1996), is a multi-state U.S. lottery played in 45 states, D.C., and the U.S. Virgin Islands; $5 tickets, 5/70 + 1/24 matrix, 1-in-290,472,336 jackpot odds, $50 million starting jackpots, and a record $1.602 billion win in 2023.
Mega Project (gas pipeline)
Mega Project refers to a multi-billion-dollar gas pipeline megaproject linking producing regions to distant markets, exemplified by Norway's Zeepipe (1993) and the 1,200 km Langeled pipeline to England.
Mega Shark Versus Giant Octopus
Mega Shark Versus Giant Octopus (2009) is a direct-to-video Asylum mockbuster ordered by Japan's New Select, written and directed by Jack Perez as Ace Hannah in about two weeks, starring Deborah Gibson and Lorenzo Lamas as scientists fighting a thawed megalodon and giant octopus.
Mega-cisterna magna
Mega-cisterna magna (MCM), enlarged cisterna magna over 10 mm anteroposterior with normal cerebellar vermis and no hydrocephalus; a mild Dandy-Walker complex anomaly, usually asymptomatic and incidental.
Mega-City One
Mega-City One (Judge Dredd's Mega City 1) is the fictional post-apocalyptic city-state in 2000 AD's Judge Dredd strip, spanning the US East Coast since 1977, home to 800 million people ruled dictatorially by the Judges after the 2070 Atomic War.
Mega-Lo-Mania
Mega-Lo-Mania (Tyrants: Fight Through Time) is a 1991 real-time strategy god game by Sensible Software for the Amiga, with four rival gods, sector-based islands, and nine epochs from the Stone Age to 2001.
Mega-trial
A mega-trial is a very large randomized controlled trial, usually enrolling many thousands of patients across many centers, designed to detect modest treatment effects such as 15–20% reductions in death.
Mega64
Mega64 is an American video game sketch comedy troupe of Rocco Botte, Derrick Acosta, and Shawn Chatfield, founded in 2003 as a San Diego public access show, later famous on YouTube for public game skits and commissioned videos.
Megabat
Megabat, family Pteropodidae, Old World fruit bats and flying foxes: about 170 large, plant-eating, mostly non-echolocating bat species of the Old World tropics, now classified in Yinpterochiroptera.
Megabazus
Megabazus (مگابازوس) was a Persian general and noble under Darius I who, after the Scythian expedition, conquered Thrace, subdued the Paeonians, and made Macedonia a vassal kingdom.
Megabonk
Megabonk is a 2025 single-player 3D roguelike survival game by solo developer vedinad, a 3D Vampire Survivors-like that sold over 1 million copies in two weeks and withdrew from The Game Awards' Best Debut Indie category.
Megabus (Europe)
Megabus is a low-fare intercity coach brand launched by Stagecoach in August 2003 as the UK's first internet-only coach operator, known for headline fares from £1 or €1.
Megabyte
The megabyte (MB) is a unit of digital information equal to 1,000,000 bytes under the modern standard, though long also used for 1,048,576 bytes, now properly called a mebibyte.
Megaceros
Megaceros Campb. is a hornwort genus in Dendrocerotaceae, described 1907 from Java, defined by green spores, spiral pseudoelaters, stomata-less capsules, and pyrenoid-lacking multiple chloroplasts; redefined 2010 to Asian/Australasian species, distinct from the fossil deer genus Megaceros.
Megachile
Megachile (leafcutter bees) is a genus of about 1,500 solitary Megachilidae bee species whose females cut leaf disks to line brood cells; includes the managed alfalfa pollinator M. rotundata and the vulnerable giant M. pluto.
Megachile chomskyi
Megachile chomskyi (Sheffield, 2013) is a Texan leafcutter bee of subgenus Megachiloides, oenotherae species group, named for Noam Chomsky; long-tongued, likely oligolectic on Onagraceae, most similar to M. amica.
Megachile rotundata
Megachile rotundata, the alfalfa leafcutting bee, is a Eurasian solitary cavity-nesting bee accidentally introduced to North America and intensively managed; females trip 78% of alfalfa flowers versus 22% for honey bees, tripling alfalfa seed production.
Megachilidae
Megachilidae, the leafcutter, mason, carder, and resin bee family, is the third largest bee family with over 4,100 solitary species distinguished by abdominal scopa and cavity nesting.
MegaChips Corporation
MegaChips Corporation (株式会社メガチップス) is a Japanese fabless semiconductor company headquartered in Osaka, founded in 1990, designing custom ASICs and system LSIs for entertainment and imaging devices.
Megachurch
A megachurch is a Protestant congregation drawing roughly 2,000 or more adults and children to weekly worship across all locations, a size category rather than a denomination.
Megacity
Megacity: an urban agglomeration of 10 million or more inhabitants under the UN definition. 33 existed in 2025 (19 in Asia), Jakarta (~42 million) is largest, and Dhaka is projected to lead by 2050.
Megacolon
Megacolon is abnormal dilatation of the colon, also called congenital megacolon in Hirschsprung disease. Covers toxic megacolon (>6 cm dilation with systemic toxicity), Ogilvie syndrome, and acquired idiopathic megacolon.
Megaconial congenital muscular dystrophy
Megaconial congenital muscular dystrophy (MDCMC), also called CHKB-related muscular dystrophy, is a rare autosomal recessive disorder caused by CHKB variants, marked by enlarged peripheral muscle mitochondria, hypotonia, intellectual disability, ichthyosis, and cardiomyopathy.
Megacricetodon
Megacricetodon is an extinct genus of cricetid rodents that lived across Eurasia during the early and middle Miocene, from about 17 to 9.5 million years ago.
Megacystis-megaureter syndrome
Megacystis-megaureter syndrome (mega-ureter-megacystis syndrome, ORPHA:238637, ICD-11 LB31.7) is a rare congenital urinary tract malformation with massive primary vesicoureteral reflux, a large thin-walled bladder, dilated ureters, and recurrent urinary tract infections.
Megacystis-microcolon-intestinal hypoperistalsis syndrome
MMIHS, or Berdon syndrome, is a rare congenital smooth muscle disorder causing megacystis, microcolon, and absent intestinal peristalsis, usually from autosomal dominant de novo ACTG2 mutations, managed with parenteral nutrition and transplantation.
Megaderma
Megaderma is a genus of Asian false vampire bats (Megadermatidae) established by É. Geoffroy Saint-Hilaire in 1810, type species Vespertilio spasma; it now holds one living species, Megaderma spasma, after the greater false vampire moved to Lyroderma.