Unhundred %
Release date: Sep 06, 2021
Author: ClockwiseUK
Download: Version 1.0, Unheadered (722 downloads)
Genre: Unknown [?]
Game: SM
Difficulty: Veteran [?]
Average runtime: 0:55
Average collection: 0%
Read Me: [None]
Forum Thread: Release Thread
Rating: Star Star Star Star Star
Unhundred % is a mostly vanilla hack in which the player starts with every item in the game and must place every item back in its original position! This means you get weaker as you go. There have been minimal changes to the map.

As you can imagine it's fairly easy to softlock yourself if you don't think ahead so extensive knowledge of the game is required.

Let me know what you think! All feedback is welcome!

Changes to the base game:
Start with all items
Picking up an item removes it from the Samus
Returning to the ship with no items ends the game
Morph will not appear until all other items have been removed
Door to G4 has been removed as Torian is no longer necessary
Acid Torizo no longer requires space jump to access Lower Norfair
Old mother brain room no longer locks the player in when in it's inactive state

If you are in Retro Brinstar when you deposit your last item (apart from morph) You will have to travel up the elevator and back down again to make morph appear.

Special Thanks to PJ for showing me the ropes.
Also to PHOSPHOTiDYL for creating the "Skip Intro Saves" ASM that is used.
Screenshot Screenshot Screenshot
Ratings and Reviews
By drb on Sep 13, 2021 (Star Star Star Star Star )
0% in 0:48
Fun gimmick hack with a unique concept that allows players to experience the original game in a new way. Mostly (reverse) vanilla routing will result in mostly vanilla difficulty, though there are a couple of rooms that become tedious due to certain required item drop-offs. A long IBJ will often be required towards the end of the game but no other tricks are strictly needed. As the map and combat are unchanged, both the fun and the challenge stem entirely from routing – this is a plus for me. Starting with 100% and working your way down allows for a lot of different and unique playthroughs:
Want to keep Plasma/XRay and microwave all of the bosses? Go for it.
Want to challenge yourself to Maridia or Norfair suitless? Right here.
Want to find the most efficient route possible and speedrun? Sure, but plan ahead or you may find yourself unexpectedly softlocked... which brings me to my one complaint, and I’m going to belabor it a bit:
“If you are in Retro Brinstar when you deposit your last item (apart from morph) you will have to travel up the elevator and back down again to make morph appear.” I’m hardly a pro speedrunner but I like optimize routing and go as fast as I can, those extra elevator rides really break up the flow of the endgame and really rub me the wrong way, for three reasons:
1. The game has no concern with letting the player softlock themselves anywhere else (and there are lots of possibilities to do so). Nor should it; there’s a disclaimer on the hack’s page and avoiding softlocks a big part of the challenge for this game. So why the need to prevent the most obvious softlock there is by dropping off morph early?
2. I’ve played through about a half-dozen times and I have yet to come up with a sane route where the last dropoff before morph ISN’T missiles or PBs in Retro Brinstar. So unless I’m missing something obvious this situation is more of a “when” than an “if”.
3. (Possible spoiler) I do appreciate the change that riding the elevator causes, but you’ll still get it after the ride back up to Retro Crateria no matter what. So is it really worth it?
Beyond that admittedly small pet peeve, this is a solid four-orb take on the vanilla game that’s a lot of fun, with high replay value to explore a ton of wacky equipment possibilities. Save often and be careful of softlocks, especially in the last few drop-offs.

(Time listed is PB IGT, against a 0:55 Vanilla 100% PB IGT for reference)
By Kremit44 on Sep 22, 2021 (Star Star Star Star Star )
No completion stats.
By P.Yoshi on Jun 20, 2022 (Star Star Star Star Star )
No completion stats.
The concept alone is super cool. I think it was really smart to allow possible softlocks for progression - a lesser hack would have forced you to complete the game in a very specific way to complete and the game would have ended up just being a boring SM run in reverse. I'm not a speedrunner, but I think this hack has amazing potential for finding cool new routes and tricks not used in vanilla SM.

My only real issue is I find it weird how you can't drop Morphball early. Everywhere else the game is content with letting you softlock. It's a small thing, and for all I know there is a technical reason for it, but I do find it somewhat odd.
By RX-78-2 on Mar 14, 2023 (Star Star Star Star Star )
0% in 1:03
shoulda been called Super Metroid In Reverse or Super Metroid Backwards since that seems to be what this hack is mainly about, Super Metroid in reverse... I can't really say anything about it because everything I can say about vanilla SM would apply to this hack since this hack isn't nothing special (other than starting the game with 100% items and having to put them all back AND Tourian being removed). it was a fun experience tho, would definitely recommend

By ironrusty on Mar 01, 2024 (Star Star Star Star Star )
No completion stats.
A good idea and fine execution. It definitely makes you think!

You must login to rate this hack