BERLIN — David M. Rosenthal’s “A Single Shot,” starring Sam Rockwell and William H. Macy, is among four U.S. films that will unspool in the Berlin Film Festival’s Forum section, which unveiled its complete 41-title lineup on Wednesday.

In describing this year’s crop of new cinema and avant-garde films, the fest said: “Social upheaval, times of transition and periods of change are at the heart of numerous films in the 2013 Forum program.”

“Single Shot,” a U.S.-U.K.-Canadian co-production, revolves around a cover-up of a hunting accident that degenerates into a nightmare for those involved.

Other U.S. titles include Matt Porterfield’s “I Used to Be Darker,” which turns on a young woman from Northern Ireland who seeks refuge with relatives in Baltimore, and Andrew Bujalski’s 1980s-set “Computer Chess,” about a chess programmers’ convention in a rural hotel that gets out of hand.

The new cinema sidebar is particularly heavy on European works this year, among them Bobo Jelcic’s Croatian film “A Stranger,” which examines the nearly insurmountable divisions in the Herzegovinian city of Mostar; Nana Ekvtimishvili and Simon Gross’ Georgian-German title “In Bloom,” the 1992-set story of two young women in a Georgia marked by civil war and poverty; and Elina Psykou’s Greek drama “The Eternal Return of Antonis Paraskevas,” about a TV presenter who fakes his own abduction when he senses that his fame is on the wane.

Also selected are Neus Ballus’ Spanish film “The Plague,” about five different people struggling to survive on the outskirts of Barcelona; and Daniel Joseph Borgman’s feature debut “The Weight of Elephants,” a Danish-New Zealand co-production about a 10-year-old boy who uses his imagination to escape the harshness of everyday life in a small New Zealand town.

Additional Forum titles include:
“The 727 Days without Karamo,” by Anja Salomonowitz (Austria)
“Coming Forth by Day,” by Hala Lotfy (Egypt)
“The Battle of Tabato,” by Joao Viana (Guinea-Bissau/Portugal)
“Echolot,” by Athanasios Karanikolas (Germany)
Elelwani,” by Ntshavheni Wa Luruli (South Africa)
“Boundary,” by Nontawat Numbenchapol (Thailand/Cambodia)
“Fynbos,” by Harry Patramanis (South Africa/Greece)
“Everyday Objects,” by Nicolas Wackerbarth (Germany/France)
“Helio Oiticica,” by Cesar Oiticia Filho (Brazil)
“The Daughter,” by Thanos Anastopoulos (Greece/Italy)
“I’m Not Dead,” by Mehdi Ben Attia (France)
“Circles,” by Srdan Golubovic (Serbia/Germany)
“The Town of Whales,” by Keiko Tsuruoka (Japan)
“When I Saw You,” by Annemarie Jacir (Palestinian Territories/Jordan)
“Killing Strangers,” by Jacob Secher Schulsinger, Nicolas Pereda (Mexico/Denmark)
“Dark Matter,” by Massimo D’Anolfi and Martina Perenti (Italy)
“The Strange Little Cat,” by Ramon Zuercher (Germany)
“The Meteor,” by Francois Delisle (Canada)
“Forgetting to Know You,” by Quan Ling (China)
“Char… The No Man’s Island,” by Sourav Sarangi (India)
“La Paz,” by Santiago Loza (Argentina)
“Powerless,” by Fahad Mustafa and Deepti Kakkar (India)
“Cold Bloom,” by Atsushi Funahashi (Japan)
“Roots,” by Kaoru Ikeya (Japan)
“Shirley — Visions of Reality,” by Gustav Deutsch (Austria)
“Sieniawka,” by Marcin Malaszczak (Germany/Poland)
“Stemple Pass,” by James Benning (U.S.)
“To the Wolf,” by Christina Koutsospyrou and Aran Hughes (Greece/France)
“No Man’s Land,” by Salome Lamas (Portugal)
“Together,” by Hsu Chao-jen (Taiwan)
“Father’s Garden — The Love of My Parents,” by Peter Liechti (Switzerland)
“Viola,” by Matias Pineiro (Argentina)
“For Marx…” by Svetlana Baskova (Russia)