Irrational Games has announced '1999 Mode' for BioShock Infinite, a "new form of play" designed to challenge players in a "variety of ways".
"1999 Mode is a way of playing designed for gamers who long for the days of games that demanded more of the player," publisher Take-Two explains.
"It will include tweaks and features that BioShock fans will not experience in a standard play-through of BioShock Infinite, no matter the difficulty level."
In addition to these permanent decisions, 1999 Mode will feature demanding weapon, power, and health management, it's said.
The mode takes a much harder stand on player respawning, sending the player directly to a 'Game Over' screen if he or she lacks the resources to be brought back to life, Take-Two explains.
"We want to give our oldest and most committed fans an option to go back to our roots," said Ken Levine, creative director of Irrational Games.
"In 1999 Mode, gamers face more of the permanent consequences of their gameplay decisions. In BioShock Infinite, gamers will have to sweat out the results of their actions. In addition, 1999 Mode will demand that players pick specializations, and focus on them.
"I'm an old school gamer. We wanted to make sure we were taking into account the play styles of gamers like me. So we went straight to the horse's mouth by asking them, on our website, a series of questions about how they play our games.
"94.6 percent of respondents indicated that upgrade choices enhanced their BioShock gameplay experience; however, 56.8 percent indicated that being required to make permanent decisions about their character would have made the game even better."
For more on the game, check out this BioShock Infinite preview, in which Irrational boss Ken Levine talks Games Master through his new dystopia.