1 Player Movement

• Walking and sprinting with stamina consumption
• Crouching to reduce noise and visibility
• Jumping affected by carried items and stamina
• Swimming with separate movement physics
• Limited movement speed when injured or exhausted

2 Survival Mechanics

• Health — reduced by combat damage, falls, hunger, dehydration, illness
• Hunger — decreases over time, affects stamina regeneration
• Thirst — decreases faster than hunger, critical for survival
• Stamina — used for sprinting, attacks, swimming, and heavy actions
• Temperature  — cold and rain increase stamina drain
• Radiation and toxicity level — player needs to look after environmental pollution

3 Inventory Mechanics

• Physical inventory represented as a ground tent
• Items exist as 3D objects with collisions
• Limited inventory space instead of weight limits
• Manual item rotation and placement
• Quick-access slots for frequently used tools

4 Crafting Mechanics