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]
Welp, overhauling my SMW Kris sprites from like 2 years back with my current skillset, just wanted to share the progress so far - left ones are the newer/updated ones (WIP, expect updates!)
#deltarune #krisdreemurr #pixelart #myart #smw #supermarioworld #wip
#deltarune #krisdreemurr #pixelart #myart #smw #supermarioworld #wip
January 29, 2026 at 4:36 AM
Welp, overhauling my SMW Kris sprites from like 2 years back with my current skillset, just wanted to share the progress so far - left ones are the newer/updated ones (WIP, expect updates!)
#deltarune #krisdreemurr #pixelart #myart #smw #supermarioworld #wip
#deltarune #krisdreemurr #pixelart #myart #smw #supermarioworld #wip
Just dropped two goal march-themed patches:
- Pictured, a fix for the time to score tallying on level end yielding glitchy score values if the time is between 400-999: smwc.me/s/41475
- The bonus stars sum game I showed off before: smwc.me/s/41476
Enjoy! #smw #romhacking
- Pictured, a fix for the time to score tallying on level end yielding glitchy score values if the time is between 400-999: smwc.me/s/41475
- The bonus stars sum game I showed off before: smwc.me/s/41476
Enjoy! #smw #romhacking
January 23, 2026 at 7:45 PM
Just dropped two goal march-themed patches:
- Pictured, a fix for the time to score tallying on level end yielding glitchy score values if the time is between 400-999: smwc.me/s/41475
- The bonus stars sum game I showed off before: smwc.me/s/41476
Enjoy! #smw #romhacking
- Pictured, a fix for the time to score tallying on level end yielding glitchy score values if the time is between 400-999: smwc.me/s/41475
- The bonus stars sum game I showed off before: smwc.me/s/41476
Enjoy! #smw #romhacking
Reposted by koopster 🐢 [asm comms open]
I'm unhappy with the Director's Cut update of Aeron's Golden Cookie Quest, that I released in 2024, because I rushed it to the C3 event, so here I'm working in a Special Edition.
First, removed the minimalist status bar, which can get cut in CRT monitors and replaced it with a sprite status bar.
First, removed the minimalist status bar, which can get cut in CRT monitors and replaced it with a sprite status bar.
January 16, 2026 at 11:00 PM
I'm unhappy with the Director's Cut update of Aeron's Golden Cookie Quest, that I released in 2024, because I rushed it to the C3 event, so here I'm working in a Special Edition.
First, removed the minimalist status bar, which can get cut in CRT monitors and replaced it with a sprite status bar.
First, removed the minimalist status bar, which can get cut in CRT monitors and replaced it with a sprite status bar.
Whenever I get a goal post bar I try to rush summing up the star points before the game does... so I coded a mechanic that lets you do that and rewards you with a life if you get the sum right.
Press L or R after any goal post to play!
#smw #romhacking
Press L or R after any goal post to play!
#smw #romhacking
January 17, 2026 at 4:39 AM
Whenever I get a goal post bar I try to rush summing up the star points before the game does... so I coded a mechanic that lets you do that and rewards you with a life if you get the sum right.
Press L or R after any goal post to play!
#smw #romhacking
Press L or R after any goal post to play!
#smw #romhacking
Reposted by koopster 🐢 [asm comms open]
The way I played a part in designing the preliminary sketches for the Bowser Throne Room 🎄!! I love seeing sketches come to life in its full glory ✨✨
TDW / StrikeForcer, thank you for commissioning me!
TDW / StrikeForcer, thank you for commissioning me!
HNY! I've been away for the holidays, but just before Christmas I was able to deliver this nifty boss for StrikeForcer's @romhackraces.com level: Winter Bowser!
Featuring two phases, including riding a sled with multiple attacks!
#smw #romhacking
Featuring two phases, including riding a sled with multiple attacks!
#smw #romhacking
January 12, 2026 at 4:38 AM
The way I played a part in designing the preliminary sketches for the Bowser Throne Room 🎄!! I love seeing sketches come to life in its full glory ✨✨
TDW / StrikeForcer, thank you for commissioning me!
TDW / StrikeForcer, thank you for commissioning me!
Reposted by koopster 🐢 [asm comms open]
Drew some running animations for my playable Mario gang yesterday, heavily inspired by Mario Wonder.
Giving the frames a bounce touch was honestly kind of fun.
#supermario
#romhacking
#supermarioworld
#myart
Giving the frames a bounce touch was honestly kind of fun.
#supermario
#romhacking
#supermarioworld
#myart
January 8, 2026 at 1:01 PM
Drew some running animations for my playable Mario gang yesterday, heavily inspired by Mario Wonder.
Giving the frames a bounce touch was honestly kind of fun.
#supermario
#romhacking
#supermarioworld
#myart
Giving the frames a bounce touch was honestly kind of fun.
#supermario
#romhacking
#supermarioworld
#myart
Reposted by koopster 🐢 [asm comms open]
Oh right! I drew the graphics for that boss!
They're in essence Icegoom's SMB1 Redrawn Bowser, but bigger and christmas-themed Mario Kart Tour style (it's straight up Bowser's santa costume from that game).
#myart
#smw
#romhacking
#bowser
#mariokarttour
They're in essence Icegoom's SMB1 Redrawn Bowser, but bigger and christmas-themed Mario Kart Tour style (it's straight up Bowser's santa costume from that game).
#myart
#smw
#romhacking
#bowser
#mariokarttour
January 6, 2026 at 1:12 PM
Oh right! I drew the graphics for that boss!
They're in essence Icegoom's SMB1 Redrawn Bowser, but bigger and christmas-themed Mario Kart Tour style (it's straight up Bowser's santa costume from that game).
#myart
#smw
#romhacking
#bowser
#mariokarttour
They're in essence Icegoom's SMB1 Redrawn Bowser, but bigger and christmas-themed Mario Kart Tour style (it's straight up Bowser's santa costume from that game).
#myart
#smw
#romhacking
#bowser
#mariokarttour
HNY! I've been away for the holidays, but just before Christmas I was able to deliver this nifty boss for StrikeForcer's @romhackraces.com level: Winter Bowser!
Featuring two phases, including riding a sled with multiple attacks!
#smw #romhacking
Featuring two phases, including riding a sled with multiple attacks!
#smw #romhacking
January 5, 2026 at 10:24 PM
HNY! I've been away for the holidays, but just before Christmas I was able to deliver this nifty boss for StrikeForcer's @romhackraces.com level: Winter Bowser!
Featuring two phases, including riding a sled with multiple attacks!
#smw #romhacking
Featuring two phases, including riding a sled with multiple attacks!
#smw #romhacking
Reposted by koopster 🐢 [asm comms open]
I realized that I haven’t posted any creations here in quite a bit.
January 5, 2026 at 11:27 AM
I realized that I haven’t posted any creations here in quite a bit.
Reposted by koopster 🐢 [asm comms open]
its working........
January 4, 2026 at 11:05 AM
its working........
Reposted by koopster 🐢 [asm comms open]
Step aside Mega Man 2's Leaf Shield, Super Mario World got its own Throw Block flavored shield!
December 9, 2025 at 9:00 AM
Step aside Mega Man 2's Leaf Shield, Super Mario World got its own Throw Block flavored shield!
Reposted by koopster 🐢 [asm comms open]
Stack-ful of Keys
December 8, 2025 at 5:25 PM
Stack-ful of Keys
Reposted by koopster 🐢 [asm comms open]
Finished animating my Yoshi's House equivalent for my SMW hack. I'm a bit shocked I was able to economize so much of this thing given the limitations I was working with...
#smw
#supermarioworld
#romhacking
#supermarioadvance2
#smw
#supermarioworld
#romhacking
#supermarioadvance2
December 6, 2025 at 9:14 PM
Finished animating my Yoshi's House equivalent for my SMW hack. I'm a bit shocked I was able to economize so much of this thing given the limitations I was working with...
#smw
#supermarioworld
#romhacking
#supermarioadvance2
#smw
#supermarioworld
#romhacking
#supermarioadvance2
SURPRISE RAMBLING DROP! In lieu of the release of Sumo Brother EX, I just finished a big post about the quirks of vanilla Sumo Brother's flames. It also goes into what happens when you carry an item through a pipe.
Go have a read! www.patreon.com/posts/sumo-b...
#smw #romhacking
Go have a read! www.patreon.com/posts/sumo-b...
#smw #romhacking
Sumo Brother's flames are weird -- and so is carrying items through pipes, incidentally | Chill Programming for Super Mario World
Get more from Chill Programming for Super Mario World on Patreon
www.patreon.com
December 3, 2025 at 3:55 PM
SURPRISE RAMBLING DROP! In lieu of the release of Sumo Brother EX, I just finished a big post about the quirks of vanilla Sumo Brother's flames. It also goes into what happens when you carry an item through a pipe.
Go have a read! www.patreon.com/posts/sumo-b...
#smw #romhacking
Go have a read! www.patreon.com/posts/sumo-b...
#smw #romhacking
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
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!