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The Liberation mod of Super Metroid on Super Nintendo is now in closed beta courtesy of clymax.
This mod is unofficial and is unaffiliated with Nintendo.
Like all of clymax’s rando mods, it’s a self-randomizer, so just simply reset the game to play a new randomization.
[Editor’s note: this section was added on January 4, 2026.]
Release Build: Features
The release build can be found exclusively on our affiliate, Romhack Plaza, here.
The opening cutscene is skipped. So is the intro sequence at Ceres Station.
Red doors can now be opened with your beam shots.
Same goes for yellow doors and green doors.
Gray doors have not been made openable, due to instability issues on certain maps.
You can now enter Tourian without having defeated any of the bosses.
Development Build: Features
Redeem early access to the dev build through participating in our community.
Examples of participation include our Rando-Speedrun Pilot here, or any “Whirlwind Fiesta”-adjacent event we hold that includes this mod.
Planet Zebes is preactivated.
Missile Expansions give you twenty missiles instead of five missiles.
Simple Baby Skip now possible, but the camera remains locked, and Samus wraps around the screen before finding the room exit.
Mother Brain’s third phase is now skipped. So are any related cutscenes.
Speed blocks are not yet breakable by the normal beam. Many other types of blocks are, however.
Your jump height while submerged is no longer reduced.
Demonstrating the open world in the dev build.
Blue gates and green gates may be openable from both sides using beam shots.
Demonstrating Plasma Beam plus Spazer Beam. For a far superior version of this feature, check out Spazer Plasma Mix here.
Exclusive Interview with Spazer Plasma Mix‘s Author
November 16, 2025
clymax: I made a poor man’s version of your Plasma Spazer Mix. Took me a few hours yesterday.
JAM: Why a poor man’s version?
clymax: Because i had an idea recently and wanted to see if i could get it to work. This approach, basically. Damage boost is 2x.
JAM: Oh, I see.
clymax: I made two hack routines for it. One for normal (Plasma Spazer etc.) shot and one for charged (Plasma Spazer etc.) shot.
JAM: For the actual damage or for multipliers for the each enemy?
clymax: These two routines are 20 bytes each. They work by preventing the spacetime beam crash by making the vanilla game engine only see Plasma as ON if both Plasma and Spazer are ON.
Actually, i have a third hack routine that handles the multiplier. That one is 16 bytes long. The hack multiplier changes the damage dealt, by doing the damage twice.
JAM: That’s an interesting solution.
Demonstrating random drops. Currently, duplicates can be rolled.
Item locations are the same as in vanilla. Items at these locations are not randomized.
All one-time collectible upgrades are in the pool of rando drops. Energy Tanks, Reserve Tanks, Missiles, Super Missiles, and Power Bombs are not.
Incorporates the Kraid Hyper Beam crash fix in support of the new Plasma-Spazer beam combo.
A new beam has been added to the pool of random items in a new update.
So, what do you think? Which 2D entry is your favorite in the Metroid series? Comment below, or come check us out on Discord.
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