Lands of Jail: How to Reach Level 20 in 25 Days

To reach Level 20 in Lands of Jail within 25 days, focus construction exclusively on your main headquarters and its mandatory prerequisites. Avoid upgrading non-essential facilities, keep a second construction queue active at all times, gather alliance assists on every project, and stockpile speedups for the final four levels.

---

Focus Exclusively on Prerequisite Buildings

Upgrading non-essential economic, military, or decorative structures wastes builder time and exhausts critical materials. Every headquarters (Warden Center) upgrade requires a matching Prison Wall alongside one alternating secondary structure, such as the Depot, Infirmary, or Barracks.

Always inspect the requirements for the next two headquarters tiers before starting any secondary project. If a building is not required for the immediate or upcoming headquarters tier, leave it at its current level.

---

Keep Two Construction Queues Running Continuously

A single builder cannot finish the required construction time before the 25-day cutoff due to compounding timers after Level 14. Keep a second building queue permanently unlocked using builder contracts from quest rewards, event milestones, or low-cost Diamond rentals.

• Primary Queue: Reserve strictly for the Warden Center and its longest prerequisite, the Prison Wall.
• Secondary Queue: Use for short prerequisites, storage structures, and required utility buildings.
• Overnight Planning: Start 8- to 12-hour upgrades on both queues before logging off to prevent idle time.

---

Maximize Alliance Time Reductions

Joining an active alliance on day one is essential for cutting upgrade times. Each ally who clicks to assist your project shaves a fixed duration or percentage off your timer.

To gain the maximum benefit from assistance:

1. Join a high-activity alliance with near-full member capacity immediately. If assists are slow, move to a more active group.
2. Request alliance help the moment a construction project begins.
3. Wait until all alliance assist slots are filled before using any consumable speedup items. Applying speedup items beforehand reduces the net time shaved by your alliance members.

---

Protect Resources for Late-Tier Upgrades

Resource costs scale sharply past Level 15, requiring multi-million reserves of Cash, Contraband, and construction materials. Internal facility generation alone is insufficient to sustain continuous building.

• Keep resource packs in your bag: Do not open itemized resource crates until the exact moment you start an upgrade. Resources stored in your bag cannot be looted during an attack.
• Upgrade the Depot: Keep the Depot upgraded to safeguard basic unspent resources up to its protected limit.
• Deploy march queues to gather: Send all available marching queues to map resource nodes whenever your troops are not actively clearing stages.
• Use Peace Shields: Activate a shield if aggressive players target your base while you gather unspent materials for Levels 18 through 20.

---

Reserve Diamonds and Speedups for Levels 16 Through 20

Early construction timers are short enough to clear using free finish thresholds and alliance clicks. Conserving your inventory early allows you to bypass multi-day timers during the final push.

Spend Diamonds primarily on second-builder activations, targeted resources for critical upgrades, or VIP levels that confer permanent construction speed boosts. Once your headquarters and Wall reach Level 18, calculate the remaining days on your 25-day deadline and consume your saved universal speedups to complete Levels 19 and 20.