koopster 🐢 [asm comms open]
@koopster.bsky.social
#smw programmer and hacker.
https://pk.muncher.se/commissions
https://www.patreon.com/c/koopsterthedog
https://pk.muncher.se/commissions
https://www.patreon.com/c/koopsterthedog
Pinned
Chill Programming for Super Mario World | Patreon
Gimmicks, sprites, bosses and a lot of rambling about them
www.patreon.com
Hi, I just set up a Patreon! The options to support me are there, but I also wanna use it to ramble about my ASM works. A post about the baby Reznors is already up - if you're into that, go check me out:
www.patreon.com/c/koopsterth...
And since this will be pinned:
pk.muncher.se/commissions/
www.patreon.com/c/koopsterth...
And since this will be pinned:
pk.muncher.se/commissions/
Reposted by koopster 🐢 [asm comms open]
After some trials and errors I finally managed to add a short intro for the world bosses I'll be using in my SMW hack.
Bowser Jr. was quite literally the guinea pig for this.
#smw
#romhacking
#bowserjr
#supermario
Bowser Jr. was quite literally the guinea pig for this.
#smw
#romhacking
#bowserjr
#supermario
November 26, 2025 at 7:08 PM
After some trials and errors I finally managed to add a short intro for the world bosses I'll be using in my SMW hack.
Bowser Jr. was quite literally the guinea pig for this.
#smw
#romhacking
#bowserjr
#supermario
Bowser Jr. was quite literally the guinea pig for this.
#smw
#romhacking
#bowserjr
#supermario
Working on skull rafts that
- have configurable size
- have configurable speed, including to the left
- interact with walls
- there can be multiple of independently: one raft won't activate every skull on screen
- don't despawn too easily (working on this one)
#smw #romhacking
- have configurable size
- have configurable speed, including to the left
- interact with walls
- there can be multiple of independently: one raft won't activate every skull on screen
- don't despawn too easily (working on this one)
#smw #romhacking
November 22, 2025 at 4:13 PM
Working on skull rafts that
- have configurable size
- have configurable speed, including to the left
- interact with walls
- there can be multiple of independently: one raft won't activate every skull on screen
- don't despawn too easily (working on this one)
#smw #romhacking
- have configurable size
- have configurable speed, including to the left
- interact with walls
- there can be multiple of independently: one raft won't activate every skull on screen
- don't despawn too easily (working on this one)
#smw #romhacking
Reposted by koopster 🐢 [asm comms open]
SPOILER WARNING! Final boss created for the other one of Saela's latest drops, Replica, where Mario sets off in an adventure to face his biggest enemy...
If you think I've been a little too quiet with bosses recently, well, I just gotta be 🫢
Get the hack here: smwc.me/s/41039
#smw #romhacking
If you think I've been a little too quiet with bosses recently, well, I just gotta be 🫢
Get the hack here: smwc.me/s/41039
#smw #romhacking
November 20, 2025 at 4:21 AM
SPOILER WARNING! Final boss created for the other one of Saela's latest drops, Replica, where Mario sets off in an adventure to face his biggest enemy...
If you think I've been a little too quiet with bosses recently, well, I just gotta be 🫢
Get the hack here: smwc.me/s/41039
#smw #romhacking
If you think I've been a little too quiet with bosses recently, well, I just gotta be 🫢
Get the hack here: smwc.me/s/41039
#smw #romhacking
SPOILER WARNING! Final boss created for the other one of Saela's latest drops, Replica, where Mario sets off in an adventure to face his biggest enemy...
If you think I've been a little too quiet with bosses recently, well, I just gotta be 🫢
Get the hack here: smwc.me/s/41039
#smw #romhacking
If you think I've been a little too quiet with bosses recently, well, I just gotta be 🫢
Get the hack here: smwc.me/s/41039
#smw #romhacking
November 20, 2025 at 4:21 AM
SPOILER WARNING! Final boss created for the other one of Saela's latest drops, Replica, where Mario sets off in an adventure to face his biggest enemy...
If you think I've been a little too quiet with bosses recently, well, I just gotta be 🫢
Get the hack here: smwc.me/s/41039
#smw #romhacking
If you think I've been a little too quiet with bosses recently, well, I just gotta be 🫢
Get the hack here: smwc.me/s/41039
#smw #romhacking
SMBX project a little bit on hold. I've been having other cool ideas left and right that I wanna do. At least I've done a few of the cooler ones by now :P
November 19, 2025 at 3:03 AM
SMBX project a little bit on hold. I've been having other cool ideas left and right that I wanna do. At least I've done a few of the cooler ones by now :P
Dropped two sprites just now!
Bouncing Paraspiny: smwc.me/s/41055
Sumo Brother EX: smwc.me/s/41057
I'm sorry ASM mods... wait, I'm one of them now 💀 This is us trying to dodge the full queue
Bouncing Paraspiny: smwc.me/s/41055
Sumo Brother EX: smwc.me/s/41057
I'm sorry ASM mods... wait, I'm one of them now 💀 This is us trying to dodge the full queue
November 17, 2025 at 10:15 PM
Dropped two sprites just now!
Bouncing Paraspiny: smwc.me/s/41055
Sumo Brother EX: smwc.me/s/41057
I'm sorry ASM mods... wait, I'm one of them now 💀 This is us trying to dodge the full queue
Bouncing Paraspiny: smwc.me/s/41055
Sumo Brother EX: smwc.me/s/41057
I'm sorry ASM mods... wait, I'm one of them now 💀 This is us trying to dodge the full queue
Essentially done with: Sumo Brother EX, which has
- flames that detect ground
- configurable flame spread and dissipation speeds
- configurable number of tiles to spread through
- an option to spread indefinitely. Run!
#smw #romhacking
- flames that detect ground
- configurable flame spread and dissipation speeds
- configurable number of tiles to spread through
- an option to spread indefinitely. Run!
#smw #romhacking
November 17, 2025 at 3:53 PM
Essentially done with: Sumo Brother EX, which has
- flames that detect ground
- configurable flame spread and dissipation speeds
- configurable number of tiles to spread through
- an option to spread indefinitely. Run!
#smw #romhacking
- flames that detect ground
- configurable flame spread and dissipation speeds
- configurable number of tiles to spread through
- an option to spread indefinitely. Run!
#smw #romhacking
A gimmick I created for one of Saela's latest drops, Karma, applied very graciously.
Named by me "Corpse Stepping", it allows you to profane a set number of Mario's corpses for his own filthy platforming purposes.
Go check Karma out! Download it here: smwc.me/s/41040
#smw #romhacking
Named by me "Corpse Stepping", it allows you to profane a set number of Mario's corpses for his own filthy platforming purposes.
Go check Karma out! Download it here: smwc.me/s/41040
#smw #romhacking
November 16, 2025 at 4:53 PM
A gimmick I created for one of Saela's latest drops, Karma, applied very graciously.
Named by me "Corpse Stepping", it allows you to profane a set number of Mario's corpses for his own filthy platforming purposes.
Go check Karma out! Download it here: smwc.me/s/41040
#smw #romhacking
Named by me "Corpse Stepping", it allows you to profane a set number of Mario's corpses for his own filthy platforming purposes.
Go check Karma out! Download it here: smwc.me/s/41040
#smw #romhacking
An expansion to Sumo Brother's flames that
- only ends when ground ends
- has configurable spread speed and vanish speed
- there can be twice as many of as in vanilla (20 versus 10)
Just gotta add interactions and pack it with a Sumo Bro, and the fun may be had :)
#smw #romhacking
- only ends when ground ends
- has configurable spread speed and vanish speed
- there can be twice as many of as in vanilla (20 versus 10)
Just gotta add interactions and pack it with a Sumo Bro, and the fun may be had :)
#smw #romhacking
November 11, 2025 at 4:28 AM
An expansion to Sumo Brother's flames that
- only ends when ground ends
- has configurable spread speed and vanish speed
- there can be twice as many of as in vanilla (20 versus 10)
Just gotta add interactions and pack it with a Sumo Bro, and the fun may be had :)
#smw #romhacking
- only ends when ground ends
- has configurable spread speed and vanish speed
- there can be twice as many of as in vanilla (20 versus 10)
Just gotta add interactions and pack it with a Sumo Bro, and the fun may be had :)
#smw #romhacking
Now truly accurate to #smbx, Toothy is now able to eat blocks! Just a little more testing before this one is out too 👀 #smw #romhacking
October 29, 2025 at 4:17 PM
Now truly accurate to #smbx, Toothy is now able to eat blocks! Just a little more testing before this one is out too 👀 #smw #romhacking
October 28, 2025 at 5:28 AM
Now truly accurate to #smbx, Toothy is now able to eat blocks! Just a little more testing before this one is out too 👀 #smw #romhacking
Reposted by koopster 🐢 [asm comms open]
mirror temple b-side! really happy with how this turned out. the combo of yoshi and theo is really cool with all the item juggling, dismounts, and item spits/eats. might be the hardest level yet? looking forward to the RTA attempts and making the next level!
October 27, 2025 at 11:54 PM
mirror temple b-side! really happy with how this turned out. the combo of yoshi and theo is really cool with all the item juggling, dismounts, and item spits/eats. might be the hardest level yet? looking forward to the RTA attempts and making the next level!
Only #smbx could've turned adorable Mr. Saturn into an unassuming mass destruction tool #smw #romhacking
October 27, 2025 at 5:19 PM
Only #smbx could've turned adorable Mr. Saturn into an unassuming mass destruction tool #smw #romhacking
Alright, done that - while GPS custom block code will be entirely ignored, my cluster sprite now gives a framework to program custom behaviors on bullet contact.
Useful for on/off blocks, brick blocks and so on. The most basic examples will be included!
Useful for on/off blocks, brick blocks and so on. The most basic examples will be included!
October 27, 2025 at 3:23 AM
Alright, done that - while GPS custom block code will be entirely ignored, my cluster sprite now gives a framework to program custom behaviors on bullet contact.
Useful for on/off blocks, brick blocks and so on. The most basic examples will be included!
Useful for on/off blocks, brick blocks and so on. The most basic examples will be included!
I got down to the point where I realised I simply can't make the cluster bullets interact with custom blocks, lol
As compensation, I added the option to make specified map16 tiles to shatter on contact with them
I wonder if there's a good way to add more common behaviors, like on/off blocks...
+
As compensation, I added the option to make specified map16 tiles to shatter on contact with them
I wonder if there's a good way to add more common behaviors, like on/off blocks...
+
October 26, 2025 at 10:54 PM
I got down to the point where I realised I simply can't make the cluster bullets interact with custom blocks, lol
As compensation, I added the option to make specified map16 tiles to shatter on contact with them
I wonder if there's a good way to add more common behaviors, like on/off blocks...
+
As compensation, I added the option to make specified map16 tiles to shatter on contact with them
I wonder if there's a good way to add more common behaviors, like on/off blocks...
+
A quickie - a patch that allows spawning monty moles in their walking state by placing sprite 12 (originally unused). #smw #romhacking
October 24, 2025 at 4:49 PM
A quickie - a patch that allows spawning monty moles in their walking state by placing sprite 12 (originally unused). #smw #romhacking
Latest commission out of the oven - keys that trigger the destruction of a chain of blocks, based on a similar entity in Super Meat Boy.
Allows crossing chains, speeding up and slowing down the destruction and even blocks that turn into other blocks! #smw #romhacking
Allows crossing chains, speeding up and slowing down the destruction and even blocks that turn into other blocks! #smw #romhacking
October 23, 2025 at 4:52 PM
Latest commission out of the oven - keys that trigger the destruction of a chain of blocks, based on a similar entity in Super Meat Boy.
Allows crossing chains, speeding up and slowing down the destruction and even blocks that turn into other blocks! #smw #romhacking
Allows crossing chains, speeding up and slowing down the destruction and even blocks that turn into other blocks! #smw #romhacking
He's hungry for some plumber meat. Also RIP top scanline #smw #romhacking
October 22, 2025 at 3:00 AM
He's hungry for some plumber meat. Also RIP top scanline #smw #romhacking
Working on something massive
October 20, 2025 at 12:04 AM
Working on something massive
Just finished a writeup on my Patreon about my SMBX assets to SMW project. This one mostly talks about what I have done so far. In a follow-up post, I will talk about what I still want to do! Go give it a read if you're up for some ASM rambling.
www.patreon.com/posts/141290...
www.patreon.com/posts/141290...
SMBX 1.3 and its pool of unexplored potential -- Part 1: What has been made | Chill Programming for Super Mario World
Get more from Chill Programming for Super Mario World on Patreon
www.patreon.com
October 17, 2025 at 8:26 PM
Just finished a writeup on my Patreon about my SMBX assets to SMW project. This one mostly talks about what I have done so far. In a follow-up post, I will talk about what I still want to do! Go give it a read if you're up for some ASM rambling.
www.patreon.com/posts/141290...
www.patreon.com/posts/141290...
Preparing a couple of Patreon posts about my SMBX assets to SMW project - one about what I've made so far, and another one about what's coming. Stay tuned 👀
October 16, 2025 at 4:07 AM
Preparing a couple of Patreon posts about my SMBX assets to SMW project - one about what I've made so far, and another one about what's coming. Stay tuned 👀
With the Billy Gun from #smbx, you're invincible!
In my #smw version,
- bullets are cluster sprites, so up to 20 can be on screen, allowing for INSANE shooting rates (see reply)
- bullets still interact with the foreground, including blocks and slopes (as well as fireballs do, at least)
#romhacking
In my #smw version,
- bullets are cluster sprites, so up to 20 can be on screen, allowing for INSANE shooting rates (see reply)
- bullets still interact with the foreground, including blocks and slopes (as well as fireballs do, at least)
#romhacking
October 15, 2025 at 3:12 PM
With the Billy Gun from #smbx, you're invincible!
In my #smw version,
- bullets are cluster sprites, so up to 20 can be on screen, allowing for INSANE shooting rates (see reply)
- bullets still interact with the foreground, including blocks and slopes (as well as fireballs do, at least)
#romhacking
In my #smw version,
- bullets are cluster sprites, so up to 20 can be on screen, allowing for INSANE shooting rates (see reply)
- bullets still interact with the foreground, including blocks and slopes (as well as fireballs do, at least)
#romhacking
You wouldn't have guessed but the hardest part about making a resource is creating a sample level to show it off in video
October 15, 2025 at 2:46 PM
You wouldn't have guessed but the hardest part about making a resource is creating a sample level to show it off in video
It's Toothy! A little fellow straight from #smbx that slaughters all who encounter its maw. Features
- consecutive scoring which resets when it's dropped
- full carriable sprite behavior, like hitting blocks and staying in Yoshi's mouth
#smw #romhacking
- consecutive scoring which resets when it's dropped
- full carriable sprite behavior, like hitting blocks and staying in Yoshi's mouth
#smw #romhacking
October 13, 2025 at 8:07 PM
It's Toothy! A little fellow straight from #smbx that slaughters all who encounter its maw. Features
- consecutive scoring which resets when it's dropped
- full carriable sprite behavior, like hitting blocks and staying in Yoshi's mouth
#smw #romhacking
- consecutive scoring which resets when it's dropped
- full carriable sprite behavior, like hitting blocks and staying in Yoshi's mouth
#smw #romhacking
October 13, 2025 at 3:51 PM