1.High concept and plot hook:

Key concept: A highly athletic but physically compromised bartender who must use a ticking pocket watch to precisely manage a severe lung condition while navigating a hostile environment with zero weapons. His rare lung condition makes him incredibly fragile but allows him to temporarily slow time down as he focuses his perception on a certain area.

2.Core gameplay mechanic: The pocket watch

• The Mechanic: The player can pull out the pocket watch at any time to check the seconds hand.
• The Rest Constraint: The protagonist can sprint or vault safely for exactly 15 seconds of peak exertion. After that, he must stop and rest for 4 seconds to catch his breath.

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• The Penalty (The Coughing Fit): If the player pushes past the 15-second limit, the protagonist suffers an uncontrollable, loud coughing fit. This completely drains his stamina, slows him to a crawl, and instantly alerts nearby enemies. </aside>

• The Audio Design: The steady, rhythmic tick-tick-tick of the watch contrasts heavily with the protagonist’s increasingly ragged, wheezing breath.

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• The Twist: During the last few seconds before the coughing fit, the player is able to temporarily slow time down, allowing them to highlight important items and escape routes, at the risk of a massive coughing fit if not managed carefully. The slowdown can be configured by the player to be automatic or manual. </aside>

3.Protagonist profile:

Name: Lopo Dekvelt

Physical aspect: A white man aged 26, very young and atlhetic. Wears a casual blue t-shirt with a medium long grey-black coat and cargo pants, paired with running shoes. Black hair, brown eyes, athletic build with a medium ammount of muscle. Has a scar on his right palm, enjoys using hand wraps to hide his palms.

Personality: Very street-savvy, capable of using environmental objects or small items very effectively, turning simple cloth into bandages or chemical powder into a visual distraction. Panics relatively easily due to the lack of oxygen from his lung condition, but remains determined. Talks very rarely, usually leaving a snide remark or a mocking joke after barely escaping a threat.

Motivation: Very sarcastic but deeply appreciative of his friends, grateful to his older brother for saving him from a dark path when he was young and helping him get his life together.

Plot:

Following the disappearance of an old friend and loyal customer, he receives a disturbing call from his friend’s number, screaming that he made a mistake before naming a condemned, subterranean facility—a place the city buried decades ago—right before the line is cut by a metallic roar.

4.Level design and Branching Paths

CONTEXT: The MC is exploring a crumbling, flooded subterranean facility. He has just slipped through a narrow passage, only to realize something massive is patrolling the corridor ahead.