Booster Pack Heroes Invulnerable Forest Spider: Save Fix

Why does the forest spider fight never end?

This guide covers the Steam retail launch context. The full game launched November 10, 2026, according to the official Steam listing. The developer response discussed below was captured November 11, 2026.

In the original player experience, Ubliterator reported that the purchased game retained their demo data. After entering the forest, a spider boss kept fighting without either side dying. Jordy, identified as a developer in the discussion, attributed that situation to older demo saves loading incorrectly and advised resetting progress. See the forest spider report and developer replies.

Detail	What the discussion establishes
Save history	The reporting player had carried demo progress into the purchased game.
Encounter behavior	The player described an apparently endless forest spider fight.
Developer diagnosis	Older demo save data was loading incorrectly.
Developer advice	Reset progress for the affected save.

The distinction between the report and the diagnosis matters. The endless battle is a player observation; the save incompatibility explanation comes from the developer. Together, they support a specific troubleshooting case. They do not establish that every difficult spider encounter, stalled battle, or imported save has the same cause.

Which demo saves did the developer say were compatible?

For the forest spider invulnerable case, Jordy clarified that compatibility was limited to saves from the latest demo update available at the time of his response. He made that clarification after another player questioned whether losing progress was necessary.

That is the strongest available answer about demo save compatibility. However, the reply does not name an affected build range, supply a save-format number, or identify the compatible demo build numerically. Those missing details limit how precisely players can classify an unfamiliar save. The developer’s compatibility clarification should take priority over assumptions based on how much progress appeared after purchase.

Save situation	What is supported
Save from the latest demo update at the time of the reply	The developer described these saves as compatible with the full game.
Older demo save matching the reported failure	The developer identified incorrect loading and recommended a reset.
Demo save with an unknown version history	Compatibility cannot be determined from the available evidence alone.
Transfer between different platforms or storefronts	The reply does not establish universal migration support.

The supplied Next Fest announcement documents a demo update with Interlopers and other changes. However, the compatibility reply does not explicitly tie its wording to a numbered build. Assigning a precise cutoff would go beyond the evidence.

Likewise, installing a newer demo is not a documented conversion method for an older save. The response does not say that updating the demo repairs existing progress before retail import.

If you cannot remember when you last played, report that uncertainty accurately. An approximate play date can provide context for support, but it should not be presented as proof that your save belongs to a compatible version.

What should you check before resetting progress?

Treat the forest spider invulnerable diagnosis as a reason to check your save history before making an irreversible change. The developer’s advice is clear for the reported older-save failure, but the discussion does not supply a procedure that preserves progress.

A reset removes game progress. It should therefore be a deliberate decision made after reviewing the case, rather than a casual first experiment whenever a boss seems unusually durable.

Compare your situation with the original report

Start with three questions:

• Did the purchased game load progress from a demo you had played previously?
• Could that progress have originated in an older demo version?
• Does the forest encounter continue without either side dying, as the original player described?

A close match makes the developer’s explanation relevant. A fresh retail save, an ordinary defeat, or a different chapter gives you a different troubleshooting context. Those differences belong in a support report.

There is no verified waiting period after which a spider becomes officially “stuck.” Record the behavior you actually observe instead of assuming a particular timer proves the diagnosis.

Preserve evidence and check current guidance

Before resetting, preserve a backup using a confirmed method appropriate to your platform. No verified save location or backup procedure is supplied here. If you cannot establish how to preserve the correct data, ask official support before proceeding.

Also check whether the developer has issued newer advice since the captured launch discussion. That recommendation does not imply a repair has been released; it recognizes that the documented response is tied to a particular launch case.

Information to record	Why it helps
Current game version	Distinguishes your installation from the launch context.
Storefront and platform	Keeps the report within the correct migration context.
Demo play or update history	Addresses the compatibility issue identified by the developer.
Encounter location and behavior	Shows whether the symptoms resemble the original forest report.
Backup status	Clarifies whether progress has been preserved before a destructive decision.

Interpret the reset advice narrowly

Jordy recommended resetting progress and expected that to resolve the affected case. The supplied discussion does not include a later confirmation from the original player showing the result.

It also provides no console command, save-editing method, file-deletion instructions, or verified alternative that preserves progress. Do not substitute an improvised procedure for the developer’s actual advice.

If preserving your existing progress is essential, seek current support guidance before deciding. The evidence supports documenting the reset recommendation; it does not support promising that support can recover, convert, or repair every affected save.

Official gameplay video

The launch trailer by Funday Games shows the game’s general pack-opening and tower-defense loop. It is a gameplay overview, rather than a demonstration of this guide’s specific objective.

How does patch 1.0.30D relate to the save bug?

The forest spider invulnerable report should be assessed separately from the fixes explicitly listed in patch 1.0.30D. Those notes describe several progression fixes and a spider-related collection improvement, but they do not explicitly announce a repair for incompatible older demo saves.

The official patch 1.0.30D announcement is useful because it states what changed. A nearby mention of spiders or progression does not, by itself, establish a connection to the imported-save failure.

Documented patch change	Relevance to this case
Fixed an integer overflow that prevented further upgrade purchases	Addresses a specified upgrade-purchase failure.
Fixed discovered-unit rewards carrying into the next act	Addresses reward carryover between acts.
Allowed continued play and quest progress after finishing acts 1 or 2	Changes post-act progression behavior.
Made the Spider Queen’s foil small spider easier to find	Addresses collection accessibility.

None of those descriptions explicitly identifies the endless forest encounter caused by an older demo save. In particular, a reward carryover fix should not be relabeled as a general save compatibility fix.

Reviewing available updates and their notes is sensible, but the available evidence does not establish that installing 1.0.30D converts an incompatible save or restores its progress. There is also no documented repair schedule for that specific problem.

When asking support about a newer build, include the version you are actually running and whether the affected save predates retail. That keeps the question focused on compatibility instead of relying on a broadly worded claim that progression bugs were fixed.

How is this different from Rift Invasion and foil Small Spider hunting?

The forest spider invulnerable diagnosis concerns an imported demo save and an endless forest encounter. Chapter 8 Rift Invasion and collecting the foil Small Spider are separate contexts.

The evidence is uneven across those topics. The forest case has a direct developer diagnosis. The foil Small Spider has an explicit patch-note improvement. The supplied material does not document Chapter 8 Rift Invasion’s encounter mechanics or provide a verified walkthrough.

Situation	Evidence available	Appropriate interpretation
Endless forest spider fight after importing older demo progress	Player experience followed by developer confirmation	Investigate the documented save compatibility issue.
Chapter 8 Rift Invasion question	No detailed encounter instructions supplied	Establish the chapter-specific issue before applying reset advice.
Missing foil Small Spider	Official patch notes describe improved availability	Treat this as a collection question.

For Rift Invasion, the useful distinction is the context of the failure. The forest discussion does not establish a Chapter 8 damage rule, phase trigger, or reset requirement. It cannot support transferring the older-save diagnosis to that encounter solely because an enemy appears invulnerable.

For the foil Small Spider, patch 1.0.30D confirms that the Spider Queen spawns the small spider and that finding its foil version was made easier. It does not provide a guaranteed drop method or say that the improvement repairs an endless boss fight.

Keeping those questions separate helps players find relevant advice without sacrificing progress based on an unrelated discussion.

Forest spider invulnerable FAQ

Is the forest spider supposed to be permanently invulnerable?

In the documented forest spider invulnerable case, the developer identified an older demo save loading incorrectly. He treated that endless encounter as a bug. The response does not establish that every spider encounter with similar symptoms has the same cause.

Can I keep my demo progress in the full game?

The developer said saves from the latest demo update at the time of his reply were compatible. He did not provide a numbered compatibility cutoff or promise that all older saves would transfer correctly. If your save history is uncertain, check current support guidance before resetting.

Did the developer recommend resetting the affected save?

Yes. Jordy recommended resetting progress for the older-demo-save problem described in the Steam discussion. That advice involves losing game progress, so preserve a backup through a verified method and review current guidance first. The captured thread does not document a successful follow-up from the original player.

Does patch 1.0.30D guarantee a fix without resetting?

No such guarantee appears in the supplied patch notes. They list specific fixes and improvements, including easier foil Small Spider collection, but do not explicitly announce older demo save conversion. A verified repair that preserves progress is not documented in the available evidence.

Related guides

• chapter 8 invincible monsters: Rift Guide
• Chapter 3 Witch & Progression
• chapter 4 boss apogre strategy: HP and Upgrade Tips