Metroid RBO GR2
Release date: Oct 21, 2013
Author: GR2
Download: Version 1.08 [UH] (310 downloads)
Genre: Challenge [?]
Game: SM
Difficulty: Veteran [?]
Average runtime: 5:52
Average collection: 88%
Read Me: [None]
Forum Thread: smethack page
Rating: Star Star Star Star Star
Japanese halfhack of Super Metroid that applies some ASM patches and forces a complete Reverse Boss Order experience. Ridley first, Bomb Torizo last. Very well-done.
Read the readme for more info, located in download.
Screenshot Screenshot Screenshot Screenshot
Ratings and Reviews
By Sapphron on Apr 22, 2020 (Star Star Star Star Star )
83% in 5:07
Hack with some unique ideas. Certainly better design-wise than aigamerDS' RBO series. Cool to figure out the puzzles and locations of all the items, but I got stuck at GT for a long time before realizing that my method takes too much damage. (hint: there's one TAS-only way to do it and one RTA-doable way to do it. You have all the items you need at that point.)
Bosses get harder and it makes sense, because normally in RBO they would get easier as you went on. Phantoon has been buffed a decent amount. I really didn't like the room before vanilla Speed Booster hallway, with the huge maze. My mistake was coming there without Varia instead of exploring elsewhere cuz I was being dumb. Come back there with Varia. Spore Spawn was really hard, but you can actually get him down in a pattern as long as you stay focused-ish.
Other than that, some of the stuff here was laid out incredibly well and was fun despite being really hard.
By Syphon on Jul 01, 2020 (Star Star Star Star Star )
81% in 4:25
Annoying maze in Norfair and garbage SpoSpo aside this was pretty neat for a halfhack. Some interesting ideas in here.

I really liked that there were a lot of items to find. Definitely made this more enjoyable than just having them in vanilla locations.

It's definitely not an easy hack. Requires some advanced techniques. It's mentioned in the readme file. Also there was a noticable difficulty spike after Phantoon.

Giving this 3 orbs. If you don't mind halfhacks it's even 4-orb worthy.

I recommend it.
By Sickwood on Jun 06, 2022 (Star Star Star Star Star )
100% in 8:05
Played this a couple years ago after really liking GR2 half-hack and didn't get very far. I had fallen for a trap early on thinking certain normal room and door connections were blocked off and missed a very important item when not finding a hidden passage. Tried it again with more attention to detail and had a great time. The author brilliantly routes you through a RAMBO, not just RBO. To get 100% you pretty much have to go through every room multiple times after getting upgrades, there are 256 items!! I would recommend keeping a written log of unobtainable items as you go along to save time on the back end, if you're into 100%. The author does mark a dot on the map for every item, but sometimes there are two items in the vicinity of the same dot. Tons of fun puzzles and wacky boss alterations like GR2 half-hack. The aforementioned maze in pre-speed is tempting to do without Varia as Sapphron mentioned, but not doable or necessary at that point. The bosses weren't that bad once you figure out the vulnerabilities and patterns of some of them, but the increasing difficulty was very well done. There's quite a few grey doors linked to progression, but don't forget to check for enemies killed in the room. GR2 is a really creative hacker and would be really cool to see an original hack next. Recommended with caveat that it's long, somewhat challenging, and still a half-hack.
By Kirarin on Dec 27, 2023 (Star Star Star Star Star )
No completion stats.
I had a lot of issues with this hack.

I figured there would be a lot of back and forth, this being a true RBO. It's mostly not so bad because the SM world is well connected. The item order (until where I played) was interesting, some design changes and puzzles were neat, and for the most part the author was balancing well the maps, making sure there was enough e-tanks or health refills while you did countless hellruns.

However, some stuff was puzzling to say at least. Ridley taking at least 60 missiles considering how much energy you have is quite obnoxious. Got stuck there for hours, because if you take a hit it's very difficult to win the fight. Even if you're good at dodging her, you still have to connect all missiles while dodging her and on a time limit (heat damage). It demands great execution. Imo the fight should be easier, maybe requiring less missiles, because this being a true RBO, I wouldn't mind if the other bosses were BS uber strong if Ridley was easy, like in the original were Kraid is very easy and you can take your time.

When you beat her, you still need to work your way for the fight reward, and when you want to leave lower Norfair, the game puts you in some sections that you need to farm red seahorses for small health (takes forever. Why not put an e-tank there instead of 2 missile expansions?), and in a future room (just before the lower Norfair escape), pretty much need dumb luck or look in smile to see how to get an e-tank in that room and not die.

It would be difficult, but still possible, but Maridia managed to be even worse. First, you have to do continuous walljumps inwater between two walls to progress, and on the very next room I got stuck. I don't know if it was my rom version or it got bugged somehow, but Samus couldn't escape the sands on the second room before Draygon. There's a grapple block there, but not enough room to do a grapple jump.

Seeing how frustrating some rooms were for me, and how unbalanced Ridley was for a true RBO, where you can't grab 10+ e-tanks, crystal flash, if you take a hit from her you die, if you do it without savestates you need damn near perfect movement to beat her and refill on the way back, and not die to spikes while climbing back to save, and then getting stuck at Maridia, I didn't find the challenge in this hack fair or giving enough reward for the work I was putting. Golden Torizo was balanced, hard but not impossible, and some item progression were the only nice things to see on this hack. Not recommended.

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