PeakVersionBypass

PEAK Version Bypass

Skips PEAK's mandatory server version check and restores the offline island

rotation timer and dev message.

Transparency note: this plugin was built with AI assistance (vibecoded,

end to end — diagnosis of the game's IL, the Harmony patches, the docs you're

reading). It still solves a real problem that affects many players — being

locked out of the game by the server version gate — and every claim in this

README was verified against a running game. Source is fully available in

Plugin.cs; read it before you trust it.

Problem it solves: on every launch, MainMenuPageHandler asks

peaklogin3.azurewebsites.net/api/VersionCheck whether your build is current.

If the server says no — or is unreachable — the game shows a

VERSIONOUTOFDATE modal whose only option is closing the game. This plugin

removes that gate entirely.

What it does

| Patch | Effect |

|---|---|

| CloudAPI.CheckVersion (prefix, skip original) | The version gate is removed: VersionOkay is always true, so the modal never appears. The response callback is still invoked locally, so the menu gets a valid island timer and dev message. |

| MainMenuPageHandler.get_CanSkipVersionCheck (postfix) | If a version modal somehow still appears, it gets a skip button instead of a single "close game" option. |

The plugin fetches the real daily dev message and shows it in the menu:

• On launch it queries the endpoint the game uses (bounded to ~2.5 s, so the

menu never freezes).

• The real message is persisted to CachedMessage and reused on later,

offline launches.

• If the server is unreachable, it falls back to CachedMessage, then

DevMessage, then the built-in default.

The island timer is replicated from the game's own offline fallback math

(NextLevelService.CreateFallbackData): 24 h rotation anchored to

2025-06-14 17:00 UTC. Countdown and island index behave exactly like the

vanilla offline mode.

Installation (mod manager)

r2modman / Gale Mod Manager: install this package from the

manager, profile PEAK, then Launch. Done.

Installation (manual)

• You need BepInEx 5 (BepInExPack PEAK) installed in the game folder.
• Copy BepInEx/plugins/PeakVersionBypass.dll into your game's

BepInEx/plugins/ folder.

• Launch the game. The version modal will not appear.

Configuration

BepInEx/config/com.black.peakversionbypass.cfg:

[General]

Fallback text shown in the menu's Dev Message slot when the real server

message cannot be fetched.

Setting type: String

Default value: we updated the frogs again

DevMessage = we updated the frogs again

Last known real dev message, auto-updated while online. Leave empty to

fall back to DevMessage.

Setting type: String

Default value:

CachedMessage =

• CachedMessage is overwritten automatically on every successful fetch.

You normally never touch it; it's what lets the menu still show the last

real message when you're offline.

• DevMessage is only a fallback: it shows when the server can't be

reached and there is no cached value yet.

Compatibility

• BepInEx 5.4.23.x (BepInExPack PEAK 5.4.75301 or equivalent), Unity 6

Mono runtime.

• Harmony patches are narrow (one method prefix + one property postfix) and

use AccessTools name-based lookup with null guards, so the plugin degrades

gracefully — it logs warnings instead of crashing if a game update renames

the patched members.

• Compatible with other plugins: it does not detour anything other mods

typically hook (no Player, NetworkManager, Photon, or Steamworks patches).

If another mod also patches CloudAPI.CheckVersion, both apply; the last

prefix returning false wins, which is the expected Harmony behavior.

Known limitations

• Multiplayer: lobbies hosted on newer game builds can still refuse your

client (Photon app-version / lobby PeakVersion property mismatch). That is

server-side intent, not something this plugin can or should bypass — play

with others on the same build.

• The Unable to start Unity log writer line some setups print at boot is a

known cosme