ExponentialItemsReloaded v2.0 (Multi-Mode Scaling Edition)

A modernized Risk of Rain 2 mod that enhances item stacking mechanics with configurable scaling modes.

Credits & Acknowledgements:
Originally developed by CryptidLabs on Thunderstore.
Version 2.0 overhaul by Brollix introduces multi-mode scaling algorithms (Linear, Sqrt / Sublinear, Exponential, and Off), configurable multipliers, and safety protections against uncontrollable stat spikes.

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What's New in v2.0?

The original mod only supported pure exponential base-2 stacking ($2^n$), which quickly ballooned items like Soldier's Syringe (Attack Speed) into game-breaking numbers. Version 2.0 introduces 4 selectable stacking modes:

1. Sqrt Mode (Sublinear Square Root Curve) — Recommended

• Formula: $S(n) = n + \lfloor A \cdot \sqrt{n} \rfloor$ (where $A$ is configurable via Sqrt Factor, default: 2.2).
• How it feels:
  • 1st pickup ➡️ 3 stacks (+45% attack speed / early power boost).
  • 2nd pickup ➡️ 5 stacks (+75%).
  • 3rd pickup ➡️ 7 stacks (+105%).
  • 4th pickup ➡️ 8 stacks (+120%).
  • 5th pickup ➡️ 10 stacks (+150%).
  • 10th pickup ➡️ 17 stacks (+255%).
• Why it's great: Gives an immediate agile start (especially on survivors like Huntress) while gracefully tapering off so you never clip through walls or freeze the game with particle overload.

2. Linear Mode ($y = M \cdot x$)

• Formula: Each pickup grants a configurable amount (default: $M = 2$).
• How it feels: $2, 4, 6, 8, 10, 12...$ stacks.
• Why it's great: Clean, predictable "double loot" progression.

3. Exponential Mode ($B^x$)

• Formula: Classic exponential scaling ($1, 2, 4, 8, 16, 32...$).
• Why it's great: The chaotic sandbox mode for explosive runs.

4. Off Mode (Vanilla 1x)

• Preserves the mod installed while reverting to 1x vanilla behavior.

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Configuration

Found in BepInEx/config/com.cryptidlabs.exponentialitemsreloaded.cfg:

[General]

## Stacking calculation mode: Off, Linear, Sqrt, or Exponential
# Setting type: StackingMode
# Default value: Sqrt
# Acceptable values: Off, Linear, Sqrt, Exponential
Stacking Mode = Sqrt

## Multiplier for Linear mode (e.g. 2 gives 2x stacks: 2, 4, 6, 8...)
# Setting type: Int32
# Default value: 2
Linear Multiplier = 2

## Sublinear bonus factor for Sqrt mode (e.g. 2.2 gives 3, 5, 7, 8, 10, 11, 13...)
# Setting type: Single
# Default value: 2.2
Sqrt Factor = 2.2

## If true, custom stacking only applies while Artifact of Exponents is enabled. If false, the mod is always active.
# Setting type: Boolean
# Default value: true
Require Artifact Enabled = true

## Maximum item stack count this mod will try to reach.
# Setting type: Int32
# Default value: 4096
Max Stack Size = 4096

## Exponential base for Exponential mode (e.g. 2 gives 1,2,4,8... 3 gives 1,3,9,27...)
# Setting type: Int32
# Default value: 2
Base Size = 2

[Item Filters]
Affect White Items = true
Affect Green Items = true
Affect Red Items = true
Affect Boss Items = true
Affect Lunar Items = true
Affect Void Items = true
Affect Tierless Items = false
Affect Temporary Items = false
Affect Equipment = false

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Building from Source

Requires .NET 8+ / .NET SDK:

dotnet build -c Release

The output DLL will be located at bin/Release/netstandard2.1/ExponentialItemsReloaded.dll.

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License

GPL-3.0 / Open Source.