Gym

The Gym is where you permanently improve the four combat stats used when fighting Zeds. Every training action costs 5 Energy.

• Strength increases the damage you deal.
• Defense reduces the damage you receive.
• Speed improves your chance to hit.
• Agility improves your chance to dodge.

Training gains

Training gains depend on the chosen stat, its current value, your Gym level, and your current Morale. Gains can vary slightly between otherwise identical actions.

Each Gym level directly multiplies training gains, from ×1 at level 1 to ×10 at level 10. Training permanently increases the chosen stat. You cannot train while injured.

Morale boost

Morale increases training gains. The Morale Boost shown in-game estimates its benefit for the next action. Training uses 4 or 5 Morale per action while available; at zero Morale, training receives no Morale bonus.

Morale jumps

A morale jump uses food and energy boosters to raise Morale and Energy above their normal limits before a large training batch. Excess Morale resets to its normal maximum at the next 15-minute clock boundary, so train before the on-screen countdown expires. The Gym counts up to 9,999 Morale toward training gains.

Upgrades

Upgrade	Items required	Cash cost
Gym upgrade 2	100 × Logs; 10 × Nails; 20 × Iron Bar	$250
Gym upgrade 3	250 × Logs; 25 × Nails; 100 × Iron Bar	$500
Gym upgrade 4	250 × Logs; 50 × Nails; 250 × Iron Bar	$1,000
Gym upgrade 5	20 × Steel; 10 × Wire; 1 × Rope	$25,000
Gym upgrade 6	100 × Steel; 20 × Wire; 2 × Rope	$50,000
Gym upgrade 7	250 × Steel; 30 × Wire; 10 × Rope	$100,000
Gym upgrade 8	10 × Brick; 20 × Cement; 10 × Plastic	$250,000
Gym upgrade 9	25 × Brick; 50 × Cement; 20 × Plastic	$500,000
Gym upgrade 10	50 × Brick; 100 × Cement; 40 × Plastic	$1,000,000