Prison Clash

01. What It Is

Most of the value in Prison Clash is paid for killing the Mafia garrison, not for holding the prison. The Fighter and Ally chests land the moment the defenders fall, no matter which alliance ends up in control. Control adds a third chest, a hero-fragment pool and season points on top, and it is decided in the last 30 minutes of a two-hour window.

The map holds 16 prisons: 4 Supermax Prisons in an inner ring around the State Capitol and 12 Prisons around the outer edge. Each is garrisoned by a Mafia force. A season runs 8 rounds; each round your alliance registers, picks a battle time, clears the garrison, and tries to hold the prison for 30 continuous minutes. The event is permanent and restarts every season with a harder garrison.

🏛️ Supermax Prison (×4)

2 season points per round. Double Fighter, Ally and Occupier chests. 100-chest Unifier pool. Special pool rotates 420 hero fragments or 600 legendary skill books. Must be unlocked before it can be contested.

🔒 Prison (×12)

1 season point per round. Single chests. 40-chest Unifier pool. Special pool rotates 200 hero fragments, teleporters and speedups. Open from the start.

02. Eligibility

The gate that costs alliances the most is the roster snapshot: only members who were in the alliance at 00:00 server time on battle day can fight. Recruiting on the day is useless, and a member who hops to a new alliance that day is locked out of Prison Clash for everyone.

03. Registration

Registration compounds: every prison you hold at the end of a season is auto-registered next season for free, and the free ones do not use up your two active slots. An alliance that wins its picks can grow its holdings by up to two prisons every season while keeping everything it already has.

• ▸Two active slots. One Prison and one Supermax Prison per registration phase. Not two Prisons.
• ▸Switching cancels. Registering a different prison of the same type wipes the earlier registration. You can edit your choice until registration closes.
• ▸Pick 3 of 5 battle times. 03:00, 09:00, 13:00, 14:00 and 17:00 server time. The button stays greyed out until exactly three are chosen.
• ▸You do not choose the final time. The slot picked by the most alliances in the state wins for everyone.
• ▸Everyone gets a mail. "Prison Clash Time" goes to all members on registration, and push notifications fire 10 minutes before and at the start. Players cannot turn those off.

04. The Difficulty Ramp

The garrison jumps 14.8× between season 2 and season 3 (6.7M to 99M), and the recommended power jumps 32×. Seasons 1 and 2 are the cheap window. Difficulty is identical across all 8 rounds of a season and across every prison of the same type, so round 1 costs exactly what round 8 costs. Fight every round; waiting buys nothing.

In seasons 1 and 2 a Supermax garrison is about 2.9× a Prison garrison, and the game recommends 5× the power for 2× the reward. From season 3 the two garrisons are identical. The Supermax then pays double on every channel for the same fight, and the only reason to take a Prison at all is that it fills your second registration slot.

Garrison power is computed from the defender lineup and its combat buff. The game only shows you Recommended Power and the defender count. Seasons 1 and 2 field mixed T5/T6 (Prison) and T6/T7 (Supermax) lines; seasons 3 to 8 field tier-10 units only, split evenly across the three arms.

05. The Occupation Phase

Control is decided by the last 30 minutes of the 2-hour window, not the first. An alliance takes full control by occupying the prison for 30 continuous minutes. If nobody manages 30 continuous minutes, control goes to whoever is occupying when the window closes. A late push in the final half hour can take control from the alliance that bled 30% of its officers clearing the garrison.

No fight in a prison kills officers. Everything goes to the hospital, so hospital capacity and healing speedups are the real throughput limit, not troop count. A player with a full hospital cannot join the second wave. Note the asymmetry: sitting in a garrison that gets attacked costs you 35% injured even though you never marched.

Free teleport

• ▸2 charges, available from 10 minutes before the battle until the event ends.
• ▸Only into the territory of a prison your alliance registered for. It will not put you next to an unregistered prison.
• ▸Two charges means one trip out and one trip home. Do not burn the second charge repositioning inside the battle.

06. Rewards

A member of an alliance that clears and holds one Supermax Prison collects about 1,200 diamonds, 2 Legendary Recruitments and 4 Epic Recruitments every round. Over an 8-round season that is roughly 9,600 diamonds and 16 Legendary Recruitments from a single prison. A Prison pays exactly half. The chests are award-only; nothing in the shop sells them.

Three of the five channels pay on the garrison kill alone. The alliance that clears the Mafia first owns the Unifier pool even if it loses control later, and the alliance holding at the end owns the special pool and Occupier chests even if it never touched the garrison. They can be two different alliances.

What is in each chest

Diamonds

Patrol Book

Deploy Book

Universal Speedup

The special pool rotation

The special pool is the only place this event hands out hero fragments and legendary skill books in bulk, and it only goes to the controlling alliance. Each prison cycles through a fixed set of four prizes, one per round. The Supermax rotation is worth chasing; the Prison rotation is consumables plus one fragment round.

Each prison's four-prize cycle is fixed and repeats after round 4. Check the prison's reward preview before registering; two prisons of the same type can be on different prizes in the same round.

07. Distribution

The distributable pools have a 24-hour fuse and a per-player cap, and together they punish small or absent leadership. An R4 or R5 must be online the day after the battle, and the cap forces the pool to be spread across a minimum number of people or the remainder is lost.

The Unifier minimums are enforced by the distribution window. The special-pool minimums follow from the same cap rule and are our arithmetic, not an on-screen number.

• ▸Who. Alliance Leader, R5 or R4 only. Nobody else sees the button.
• ▸When. 24 hours from the end of the phase. The window closes itself and the rest is gone.
• ▸To whom. Only members still in the alliance at calculation time. The list can be sorted by Contribution, Power, Alliance Rank or PD level.
• ▸Contribution is scored on enemy eliminations, occupation time weighted by squad power, and casualties. The exact weights are not visible.

08. Season Points

Season rewards are bracketed by your alliance's total points, not its rank, so several alliances can all land in the top bracket. The in-game rules text says "final ranking"; the game's own reward screen buckets the whole leaderboard by points. Every member of the alliance receives the bracket reward by mail.

Controlling a Prison is 1 point and a Supermax is 2. The whole map is worth 20 points per round, and the top bracket starts at 88, so points must accrue every round you hold a prison for the ladder to be reachable at all. Under that reading, one Prison held all season is 8 points (Lvl 4), one Supermax is 16 (Lvl 5), and Lvl 10 needs more than half the map every round. The per-round summation happens out of sight; treat this as the only reading that makes the numbers add up.

09. Facilities

The in-game text says facility buffs of the same type and level do not stack. It leaves out the half that matters: the same buff at different levels does stack. A Lvl 1 Crime Lab plus a Lvl 3 Crime Lab is +13% Construction and Research Speed. A second Lvl 1 Crime Lab adds nothing. The correct target set is exactly one facility of each type-and-level combination, seven in total, and every facility beyond those seven is pure cost.

Three conditions for a buff to count

• ▸Your alliance owns it. Obvious, and not enough on its own.
• ▸Your territory reaches it. A facility marked "Territory Not Connected" or "Ineffective" gives nothing. Lose the connecting banner and every member loses the buff.
• ▸It is not being contested. Once a facility enters the "Contest" phase, its buff is switched off for the current owner until the either the contest time expires (thus retaining control for the alliance) or another alliance gains control of it.

You can only contest facilities adjacent to your alliance territory. The capture rules below are the game's stated design; the timers are run out of sight, so treat them as intent rather than something we verified round by round.

The Lvl 4 Arsenal is the only fight in the whole Prison Clash system that permanently kills officers. Everything else, prisons included, only injures. Send the Arsenal push with troops you can afford to lose, and take it once; the 3-day protection window covers the alliance that holds it.

First-capture rewards

The first alliance to capture a facility pays every member a one-time bonus. This is a land grab: the reward is gone once anyone has taken it. Lower-level facilities pay less but cost 10% injuries instead of 30%, so sweep the untouched Lvl 1 and Lvl 2 facilities near your territory early.

The Logistics Hub's +5% Resource Production is displayed on the facility panel, but we could not confirm that it is applied to your production. Treat the Logistics Hub as a +5% Confiscation Speed facility and consider the production line a bonus if it works.

10. Common Mistakes