Question: Which band was formed first, Headstones or Game Theory?

Context paragraphs:
Algorithmic game theory: Algorithmic game theory is an area in the intersection of game theory and algorithm design, whose objective is to design algorithms in strategic environments.  Typically, in Algorithmic Game Theory problems, the input to a given algorithm is distributed among many players who have a personal interest in the output.  In those situations, the agents might not report the input truthfully because of their own personal interests.  On top of the usual requirements in classical algorithm design, say "polynomial-time running time", "good approximation ratio", ... the designer must also care about incentive constraints.  We can see Algorithmic Game Theory from two perspectives:

Game Theory (band): Game Theory was a power pop band founded in 1982 by singer/songwriter Scott Miller, combining melodic jangle pop with dense experimental production and hyperliterate lyrics.  MTV described their sound as "still visceral and vital" in 2013, with records "full of sweetly psychedelic-tinged, appealingly idiosyncratic gems" that continued "influencing a new generation of indie artists."  Between 1982 and 1990, Game Theory released five studio albums and two EPs, which had long been out of print until 2014, when Omnivore Recordings began a series of remastered reissues of the entire Game Theory catalog.  Miller's posthumously completed Game Theory album, "Supercalifragile", was released in August 2017 in a limited first pressing.

Games and Economic Behavior: Games and Economic Behavior (GEB) is a journal of game theory published by Elsevier.  Founded in 1989, the journal's stated objective is to communicate game-theoretic ideas across theory and applications.  It is considered to be the leading journal of game theory and one of the top journals in economics, and it is one of the two official journals of the "Game Theory Society".  Apart from game theory and economics, the research areas of the journal also include applications of game theory in political science, biology, computer science, mathematics and psychology.  The current editors of "GEB" are E. Kalai (editor in chief), M.O. Jackson, E. Lehrer, T.R. Palfrey, and D.C. Parkes.

Pradeep Dubey: Pradeep Dubey, born January 9, 1951 in Patna, Bihar, India, is an American game theorist.  He is Professor of Economics at State University of New York, Stony Brook and a member of the Stony Brook Center for Game Theory.  He also holds a visiting position at Cowles Foundation, Yale University.  He did his schooling from the St. Columba's School, Delhi.  He received his Ph.D. in Applied Mathematics from Cornell University and B.Sc.  (with Honors in Physics) from the University of Delhi.  His areas of research interests are game theory and mathematical economics.  He has published, among others, in "Econometrica", "Games and Economic Behavior", "Journal of Economic Theory" and "Quarterly Journal of Economics".  He is a Fellow of "The Econometric Society" and a member of the council of "Game Theory Society".

Headstones (band): Headstones are a Canadian punk-influenced alternative rock band that began in 1987 in Kingston and were active until 2003, subsequently reforming in 2011.  The band consists of vocalist Hugh Dillon, guitarist Trent Carr, and bassist Tim White.  They frequently sold out at small and mid-sized venues and were known for their high energy live shows, particularly the antics of Dillon, who interacted with his audience in a variety of ways more rock less super shock.  The songwriting tackled many serious and controversial topics.

Behavioral game theory: Behavioral game theory analyzes interactive strategic decisions and behavior using the methods of game theory, experimental economics, and experimental psychology.  Experiments include testing deviations from typical simplifications of economic theory such as the independence axiom and neglect of altruism, fairness, and framing effects.  As a research program, the subject is a development of the last three decades.  Traditional game theory focuses on mathematical equilibriums, utility maximizing, and rational choice; in contrast, behavioral game theory focuses on choices made by participants in studies and is game theory applied to experiments.  Choices studied in behavioral game theory are not always rational and do not always represent the utility maximizing choice.

Generalized game theory: Generalized game theory is an extension of game theory incorporating social theory concepts such as norm, value, belief, role, social relationship, and institution.  The theory was developed by Tom R. Burns, Anna Gomolinska, and Ewa Roszkowska but has not had great influence beyond these immediate associates.  The theory seeks to address certain perceived limitations of game theory by formulating a theory of rules and rule complexes and to develop a more robust approach to socio-psychological and sociological phenomena.

Brian Skyrms: Brian Skyrms (born 1938) is a Distinguished Professor of Logic and Philosophy of Science and Economics at the University of California, Irvine and a Professor of Philosophy at Stanford University.  He has worked on problems in the philosophy of science, causation, decision theory, game theory, and the foundations of probability.  Most recently, his work has focused on the evolution of social norms using evolutionary game theory.  His two recent books "Evolution of the Social Contract" and "The Stag Hunt" are both on this topic.  These books use arguments and examples from evolutionary game theory to cover topics of interest to political philosophy, philosophy of social science, philosophy of language, and the philosophy of biology.

The Big Shot Chronicles: The Big Shot Chronicles is Game Theory's third full-length album, released in 1986.  Produced by Mitch Easter, it was recorded with a new line-up of Game Theory members after leader and songwriter Scott Miller moved the band's base from Davis to San Francisco, California.  The album was reissued on September 23, 2016 on Omnivore Recordings as part of the label's re-issue campaign of the Game Theory catalog.

Yoav Shoham: Yoav Shoham (Hebrew: יואב שהם‎ ‎ ; born 22 January 1956) is a computer scientist and a Professor Emeritus at Stanford University.  He received his Ph.D. at Yale University in 1987.  Shoham co-teaches a popular game theory course on Coursera.org, along with Matthew O. Jackson and Kevin Leyton-Brown and Advanced game theory on Stanford-online.  He is also a Fellow of the Association for the Advancement of Artificial Intelligence (AAAI), and a charter member of the Game Theory Society (GTS).  He is a co-winner of the 2012 ACM - AAAI Allen Newell Award for "fundamental contributions at the intersection of computer science, game theory, and economics, most particularly in multi-agent systems and social coordination (broadly construed), which have yielded major contributions to all three disciplines".

Supporting paragraphs: Headstones (band) Game Theory (band)
Answer: Game Theory