Join the new Lethal Upgrades Program!

Currently Offering

Player Upgrades

"We heard some employees could not complete their quotas, complaining and exclaiming "oh it's just not fair!" blah blah...

After we fed them to [THE COMPANY] though, we got to thinking...
What if we DID give them upgrades?
And now here we are!

They come at a cost, but we can offer you the chance to [FEED HIM MORE] while powering you up!"
Seems fair... right?

Health - Take a few more thumper hits!

• Tier 1: Gain +20 additional health.
• Tier 2: Reduce all incoming damage by 10%.
• Tier 3: Gain +30 additional health.
• Legendary: Gain an adaptive regeneration ability.
  • If you are below 50% health, gain +0.5 hp/s regen until back up to 50%.
  • If you are below 100% but above 50% health and have not taken damage again 20 seconds after the first time, gain a passive + 2 hp/s buff until back up to 100%. Can be stopped if taking damage again.

Stamina - More items carried, more [FEEDING IT]

• Tier 1: Decrease running stamina usage.
• Tier 2: Improve stamina regen by 10%.
• Tier 3: Greatly reduced stamina penalties when heavy (>=50 lbs).
• Legendary: When damaged, regardless of amount or source, gain full stamina back.

Movement - Run away from that vile giant.

• Tier 1: Sprint 6% faster.
• Tier 2: Walk/Crouch 10% faster.
• Tier 3: Increased jump height by 25%.
• Legendary: While critically injured, gain movement speed and intangibility.
  • Always gain 1.5x more movement speed.
  • Become invisible to some enemies and invulnerable to all.
    • Has a 120 second cooldown after recovering from critical health.

Utility - They might be useful.

• Tier 1: Increase flashlight battery capacities by 10%.
• Tier 2: Shovels deal double damage. Explodes on hit as visual effect.
  • By default, explosion does no damage. Only shovel deals damage.
  • To turn explosion visual on or off, type shovel explosion.
  • If explosion is on, you can also toggle off or on shovel jumping!
    • At the cost of 2hp, elevate yourself with your shovel quite the height!
    • If your teammate has shovel jump on, he wil also be affected, just... be careful where you send him.
    • Type shovel jump in terminal to toggle it on or off.
• Tier 3: All equipment weighs 0 pounds. Cost: $400
• Legendary: Unlock 1 weather re-roll for any moon you orbit. Resets after leaving a moon.
  • Grants you one re-roll to change the weather of the moon you are orbiting!
  • Once you use it, it will only reset after you land on a moon and come back to orbit.
  • The re-roll chooses randomly, so you might get the same weather twice. Oops!
  • To re-roll, type weather reroll in the terminal.

Rotational Modifier Store

"As part of joining the program, we provided you with some new technology on your terminal!
By otherwordly means, you can modify moon experiences to make things easier for you!
Unfortunately, we couldn't lift the curse on them, so... they come with slight drawbacks."

Easy Modifiers

• Shiny but Swift: Spawnable scrap becomes 7% more valuable, but enemies move 7% faster.
• More Risk, More Reward: Increase spawnable scrap by 2, but add 2 indoor and outdoor power.
• Risk of Rain: Remove 2 indoor and outdoor power, but increase meteor shower event chance by 10%.
• Edmund's Moon: Time moves 15% slower, but decreases amount of scrap by 2.
• Bouncy House: Jump 10% higher, but your feet explode on fall damage and take 10% more fall damage.
• Pound for Pound: Scrap is 10% more valuable, but weighs 5 more pounds.

Medium Modifiers

• Miller's Moon: Spawnable scrap becomes 20% more valuable, but time moves 25% faster.
• Mothron's Dawn: Spawnable scrap becomes 15% more valuable and spawn 3 more scrap, but weather becomes eclipsed and indoor/outdoor power increases by 2.
• Watch Your Back: Increase spawnable scrap by 5, but add 3 indoor power and only bracken's spawn.
• Shaped Glass: Spawn 1.5x the amount of scrap, but lose half your health.
• Lightning Speed: Gain 2x movement speed, but enemies gain 3x movement speed.

Hard Modifiers

• Go Play Outside! : Removes all indoor power of the moon, but adds it to outdoor power.
• Go Play Inside! : Removes all outdoor power of the moon, but adds it to indoor power.
• Double it and give it to the next person! : 1.5x scrap amount and 1.5x scrap value, but double indoor/outdoor power and max enemy spawns.
• Midas Touch: Only gold bars spawn as scrap, but scrap amount decreases by half and health reduces to 20.

God help us all...

• The End: 3x scrap amount/value and double health. But... you don't wanna know

You can access the store by typing rot store in the terminal.

To-be Offered

More to come soon, such as:

• More modifiers
• Ship Upgrades
• And more...

NewGame+ Functionality

Did your squad wipe and lose the run?
Well don't fret, because obtained upgrades always stay with you in the same save file!

General Information

On a side note, welcome to the Lethal Upgrades mod!
Trying to bring less stagnation and more gameplay diversity through this mod.
Upgrades are usually focused on different categories that benefit the player.
These upgrades either take credits or use tokens, such as the legendary ones!
Upgrades are progressive, meaning they need to be bought in order, except legendary ones.

As of May 6, 2026, I also added a new rotational modifiers store!
This store allows players to pick modifiers that will change their experience when gathering scrap.
They provide both an incentive and a drawback to keep things interesting!
Currently there are 16 modifiers available: 6 easy, 5 medium, and 5 hard.
Some hard modifiers are beyond hard, but yield incredible positives.

The store system works as follows:

• When a host loads into their save, modifiers are rolled.
• When rolling, the game will choose 3 easy, 2 medium and 1 hard modifier for players to choose from.
• Players can only activate modifiers in orbit, and they will be re-rolled once they go back into orbit.
• Once a modifier is active, players are not allowed to reroute to other moons!
• Any amount of modifiers can be activated, so choose wisely!

You can access the store by typing rot store in the terminal.

Terminal Commands and Extra Information

Command Table for Upgrades (Some may not be implemented yet)

Cost Table for Upgrades

Extra Commands

Multiplayer Status

MULTIPLAYER STATUS: 🟢

• 🔴 Not working
• 🟡 Testing
• 🟢 Operational

Bugs and Recommendations

Please report any bugs, specially multiplayer ones, to try and patch them ASAP.
If you wanna report a bug or recommend something:

• Form: https://forms.gle/L3VPdXoyWeRz6P858
• None serious responses WILL be ignored.

Releases

Version Release 1.4.70

• Massively reworked save/load system for upgrades to avoid conflicts in modpacks.

Version Release 1.4.65

• Fixed a bug where health upgrades did not reapply after ejecting.
• Attempt at trying to fix upgrades not saving in game when mods conflict with LethalModDataLib.

Version Release 1.4.64

• Fixed a bug where "The End" modifier increased loot value multiplier by approximately 1000%. Oops.

Version Release 1.4.62

• More bug fixes.
• Health-lowering changes by modifiers should update on the hud now.

Version Release 1.4.60

• Fixed health-adding upgrades overriding modifiers that affected health.
• Fixed movement-increasing upgrades overriding modifiers that affected player speed.

Version Release 1.4.58

• Reworked power system to better keep track of power being added or subtracted.

Version Release 1.4.50

• Fixed previous fix not working (lol).
• Thunderstore is horrible at managing versions wtf.

Version Release 1.4.3

• Fixed "Shaped Glass" modifier not correctly resetting scrap spawn amounts.

Version Release 1.4.2

• Fixed bug where some modifiers did not affect scrap correctly.
• Fixed bug where modifier "The End" did not affect power levels correctly.
• Fixed bug where player health did not double with "The End" modifier.
• Fixed bug where modifiers did not wear off or reset when a new quota begins.
• Fixed bug where modifiers did not wear off or reset when ejected.
• Fixed "Bouncy House" modifier not making you take more fall damage.
• Switch description of "Bouncy House" to reflect new changes.
  • Explosions now spawn at players feet when this modifier is on and they take fall damage.

Version Release 1.4.1

• Forgot to take out hardcoded hard modifier for testing.

Version Release 1.4.0

• Added more modifiers:
  • 2 Easy
  • 3 Hard
• Reorganized terminal commands for more cleanliness.
• Fixed a few bugs pertinent to past modifier additions.

Version Release 1.3.9

• Added more modifiers:
  • 1 Easy
  • 3 Medium
  • 1 Hard
• Refactored some code for better readbility and implementation.

Version Release 1.3.8

• Added rotational modifier store.
• Added first 6 modifiers:
  • 3 Easy
  • 2 Medium
  • 1 Hard

Version Release 1.3.5

• Fixed bug where you would get more than one upgrade token in multiplayer sessions.
  • Hosts are now the only people that can increase a token meter.
  • If a host fills up the meter, the token should show up for everyone.
• Added legendary movement upgrade.

Version Release 1.3.1

• Fixed bug where you would stay critically injured if healed from below 20hp by legendary health upgrade.
• Fixed bug where going into critical health multiple times outrageously sped up your legendary regeneration.
• Buffed tier 2 health upgrade damage reduction from 5% -> 10%

Version Release 1.3.0

• Added legendary utility upgrade.
• Fixed tokens not syncing up correctly between host and clients.
• Fixed credit count not saving correctly when host save-scums after buying an upgrade.
• Disabled shovel explosions in orbit or when going into orbit.
  • Landmine explosions are not spawnable mid-orbit.

Version Release 1.2.5

• Added tier 3 utility upgrade.

Version Release 1.2.3

• Fixed README (why do i suck at reading them).

Version Release 1.2.2

• Added shovel jumping with tier 2 utility upgrade.
• Fixed grammar mistakes in-game.
• Fixed utility upgrades not showing correct credit count after purchasing them.

Version Release 1.2.0

• Added tier 1 and 2 utility upgrades.
  • Need to test tier 2 utility upgrade more.
• Added legendary health upgrade.

Version Release 1.1.6

• Small README fix.

Version Release 1.1.5

• Reworked README.
• (Hopefully) fixed terminal credit de-sync between host and clients.
• Legendary stamina upgrade still needs testing.

Version Release 1.1.0

• Added legendary stamina upgrade.
  • Needs testing.

Version Release 1.0.8

• I hate not having upload previews.

Version Release 1.0.5

• Fix Thunderstore Descriptions.

Version Release 1.0.0

• Released to Thunderstore.