For really great examples of artists working in games, check out Mary Flanagan’s book Critical Play: Radical Game Design.
Check out things being done as part of the USC game lab (run by Tracy Fullerton) and the UCLA game lab (run by Eddo Stern)
Heres list of artists / pieces worth sharing:
Paolo Pedercini – http://www.molleindustria.org/
Auriea Harvey (& w / Michael Samyn) – http://www.tale-of-tales.com/
Eddo Stern – https://eddostern.com/
Natalie Bookchin’s piece The Intruder (1999) – http://bookchin.net/projects/the-intruder/
Nick Crockett – http://cargocollective.com/NKRKT
Hannah Epstein – http://hannahness.com/
Jeremy Bailey (“famous new media artist”) – http://jeremybailey.net/
Alex Rickett http://xander-underwhelm.com/
John Brumley http://johnbrumley.info/
Bennet Foddy – http://www.foddy.net/
Mark Essen’s labs – http://messhof.com/games/