sebotron | working on an NES JRPG!
@sebotron.bsky.social
NES developer, guitar player and math rock enthusiast from Montreal, Canada.
Working on The Book of Rynn, an NES jrpg inspired by Dragon Warrior/Quest.
We need play testers! Join us on Discord https://discord.gg/k2dfk86hYc
Working on The Book of Rynn, an NES jrpg inspired by Dragon Warrior/Quest.
We need play testers! Join us on Discord https://discord.gg/k2dfk86hYc
Our battle system is very close to complete. We *need* testers able to try any and all commands, spells, items and break the game so we can find and fix every single issue. If you love RPGs from the 8-bit era, we need your help! #jrpg #nes #gamedev #indiegames #retrogames #the-book-of-rynn
February 13, 2026 at 5:42 PM
Our battle system is very close to complete. We *need* testers able to try any and all commands, spells, items and break the game so we can find and fix every single issue. If you love RPGs from the 8-bit era, we need your help! #jrpg #nes #gamedev #indiegames #retrogames #the-book-of-rynn
Battle spells are finished and battle items are on the way. I started working on this game about a year ago and we are finally almost feature complete, ready to enter the content phase and start working on the public demo, which will feature the entire first story. The excitement is unreal!
February 12, 2026 at 2:03 AM
Battle spells are finished and battle items are on the way. I started working on this game about a year ago and we are finally almost feature complete, ready to enter the content phase and start working on the public demo, which will feature the entire first story. The excitement is unreal!
Battle spells are coming along! Also implemented critical hits, pre-emptive strikes, parry, evade and many other battle mechanics. Do you wanna try the game while we're building it? Join us on Discord! #jrpg #nes #retrogames #gamedev #indiegames
February 9, 2026 at 10:08 PM
Battle spells are coming along! Also implemented critical hits, pre-emptive strikes, parry, evade and many other battle mechanics. Do you wanna try the game while we're building it? Join us on Discord! #jrpg #nes #retrogames #gamedev #indiegames
I recently lost my map editor after wiping my main drive in a hurry. The previous editor was heavy and Python+QT based so not very portable. I redid it in Typescript+Vite and now it runs in the browser! It's much less clunky and loads the same .chr and .pal files as the game uses, which is neat!
February 8, 2026 at 1:56 AM
I recently lost my map editor after wiping my main drive in a hurry. The previous editor was heavy and Python+QT based so not very portable. I redid it in Typescript+Vite and now it runs in the browser! It's much less clunky and loads the same .chr and .pal files as the game uses, which is neat!
January 15, 2026 at 7:02 PM
Our first battle dev build is out! If you want to help test The Book of Rynn and fight Sillygoos and grind your way to fighting the stronger Goofygoos, join us on our Discord! Link in bio :) #jrpg #thebookofrynn #nesdev #nes #indiegames #retrogames #gamedev
January 14, 2026 at 10:43 PM
Our first battle dev build is out! If you want to help test The Book of Rynn and fight Sillygoos and grind your way to fighting the stronger Goofygoos, join us on our Discord! Link in bio :) #jrpg #thebookofrynn #nesdev #nes #indiegames #retrogames #gamedev
I've been wanting to setup this Nintendo nostalgia tower for a while and it's now complete! Wii is in the living room 😎 #radical #nes #nintendo #retrogames
January 10, 2026 at 6:05 PM
I've been wanting to setup this Nintendo nostalgia tower for a while and it's now complete! Wii is in the living room 😎 #radical #nes #nintendo #retrogames
Preliminary XP curves for all archetypes. The game will have a hard level cap of 30 but each story will be completable around a lvl 20 soft cap. Looking forward to the balancing headaches! Join us on Discord, we'll need people to test the grind soon! #nesdev #indiegames #gamedev #retrogames #jrpg
January 6, 2026 at 9:23 PM
Preliminary XP curves for all archetypes. The game will have a hard level cap of 30 but each story will be completable around a lvl 20 soft cap. Looking forward to the balancing headaches! Join us on Discord, we'll need people to test the grind soon! #nesdev #indiegames #gamedev #retrogames #jrpg
The work on our battle loop continues! Added a turn order calculation based on actors dexterity and a random % variation as well as a simple attack evade calculation based on the dexterity gap between the attacker and defender. Devil's in the details, as they say! #jrpg #nesdev #indiegames #gamedev
January 6, 2026 at 1:08 AM
The work on our battle loop continues! Added a turn order calculation based on actors dexterity and a random % variation as well as a simple attack evade calculation based on the dexterity gap between the attacker and defender. Devil's in the details, as they say! #jrpg #nesdev #indiegames #gamedev
Hope y'all are having a nice New Years Eve!
We're ending 2025 closer than ever to The Book of Rynn finally becoming a reality and I couldn't be happier to share this with you all.
Happy New Year everyone, stay warm and safe, and here's to releasing The Book of Rynn in 2026! 🥳
We're ending 2025 closer than ever to The Book of Rynn finally becoming a reality and I couldn't be happier to share this with you all.
Happy New Year everyone, stay warm and safe, and here's to releasing The Book of Rynn in 2026! 🥳
January 1, 2026 at 12:26 AM
Hope y'all are having a nice New Years Eve!
We're ending 2025 closer than ever to The Book of Rynn finally becoming a reality and I couldn't be happier to share this with you all.
Happy New Year everyone, stay warm and safe, and here's to releasing The Book of Rynn in 2026! 🥳
We're ending 2025 closer than ever to The Book of Rynn finally becoming a reality and I couldn't be happier to share this with you all.
Happy New Year everyone, stay warm and safe, and here's to releasing The Book of Rynn in 2026! 🥳
That GBC game I developed in about a week and released exactly a year ago, Santa Rush, is gonna be played on a live stream by @johndogb.bsky.social today (French stream) - can't wait to see him rage at the horrible jump physics! 😅
Pour clôturer les #lives #gameboy de cette année et aussi faire perdurer encore quelques jours la magie de #Noel , je vous propose un #live sur "Santa Rush" 🎅🎁 de @sebotron.bsky.social
👉 www.twitch.tv/johndogameboy
Sans dire où a été créé le jeu :"Calisse ça c'est du live tabarnak !" 😊
👉 www.twitch.tv/johndogameboy
Sans dire où a été créé le jeu :"Calisse ça c'est du live tabarnak !" 😊
December 29, 2025 at 2:23 PM
That GBC game I developed in about a week and released exactly a year ago, Santa Rush, is gonna be played on a live stream by @johndogb.bsky.social today (French stream) - can't wait to see him rage at the horrible jump physics! 😅
Merry Christmas everyone! 🎅Our battle loop is functional although only the FIGHT command works for now. Next up: spells, items, parry and run! I'm getting very close to entering the content phase and working on the demo story. I'm *really* excited! #nes #jrpg #indiegames #retrogrames #gamedev
December 26, 2025 at 2:17 AM
Merry Christmas everyone! 🎅Our battle loop is functional although only the FIGHT command works for now. Next up: spells, items, parry and run! I'm getting very close to entering the content phase and working on the demo story. I'm *really* excited! #nes #jrpg #indiegames #retrogrames #gamedev
Hi! I was really hoping for a demo by the end of this year but I hit a few too many snags! A demo is absolutely coming early 2026, however. Until then, Happy Holidays, enjoy your friends and families and this NES-style Santa! See you all very soon!🎅🎄
December 20, 2025 at 10:48 PM
Hi! I was really hoping for a demo by the end of this year but I hit a few too many snags! A demo is absolutely coming early 2026, however. Until then, Happy Holidays, enjoy your friends and families and this NES-style Santa! See you all very soon!🎅🎄
After a whole month of fixing nasty issues and redoing systems, I'm glad to share that I am finally back to working on BATTLES! Say hi to the SILLYGOO! Name one JRPG that doesn't have a slime monster, I dare you! #nesdev #jrpg #indiegames #gamedev #retrogames
December 12, 2025 at 4:18 PM
After a whole month of fixing nasty issues and redoing systems, I'm glad to share that I am finally back to working on BATTLES! Say hi to the SILLYGOO! Name one JRPG that doesn't have a slime monster, I dare you! #nesdev #jrpg #indiegames #gamedev #retrogames
1/2 Nerd speak alert! Working with such limited resources as with the NES forces you to be creative. Collisions used to loop through: collidable tiles, trigger tiles and NPCs: 3 whole loops before we even started moving, and if an NPC had decided to start moving that same frame, that was doubled!
December 7, 2025 at 11:16 PM
1/2 Nerd speak alert! Working with such limited resources as with the NES forces you to be creative. Collisions used to loop through: collidable tiles, trigger tiles and NPCs: 3 whole loops before we even started moving, and if an NPC had decided to start moving that same frame, that was doubled!
Hi! Been a hot minute! Rewrote the entire npc and sprite update routines and finally got rid of that nasty 1 frame stutter bug. I'm also back to working on the game full time at least until January! Let's go!! #jrpg #nes #gamedev #indiegames #retrogames
December 6, 2025 at 2:53 AM
Hi! Been a hot minute! Rewrote the entire npc and sprite update routines and finally got rid of that nasty 1 frame stutter bug. I'm also back to working on the game full time at least until January! Let's go!! #jrpg #nes #gamedev #indiegames #retrogames
My little brother got me this out of the blue! Had a lot of fun building it! Also reminded me I need a shelf for my gameboys 🤦♂️
November 25, 2025 at 3:38 PM
My little brother got me this out of the blue! Had a lot of fun building it! Also reminded me I need a shelf for my gameboys 🤦♂️
Happy Sunday! I started with refactoring NPCs and ended up refactoring the whole sprite update system as well and it somehow broke the day-night cycle. I think I have some housekeeping to do! Thanks for bearing with me! 😅 #nesdev #jrpg #retrogames #indiegames #gamedev
November 23, 2025 at 1:54 PM
Happy Sunday! I started with refactoring NPCs and ended up refactoring the whole sprite update system as well and it somehow broke the day-night cycle. I think I have some housekeeping to do! Thanks for bearing with me! 😅 #nesdev #jrpg #retrogames #indiegames #gamedev
Hello! I've been busy rewriting the entire npc management system. Will be back with regular updates shortly 😎
November 20, 2025 at 7:53 PM
Hello! I've been busy rewriting the entire npc management system. Will be back with regular updates shortly 😎
Ok I need to come clean, I haven't been posting updates on #the-book-of-rynn as much in the past week because I've been taking a little break and toying with #nintendo64 programming and I've been having so much fun! I'm putting this down and going back to #nesdev right away but I'll be back!😅
November 10, 2025 at 9:54 PM
Ok I need to come clean, I haven't been posting updates on #the-book-of-rynn as much in the past week because I've been taking a little break and toying with #nintendo64 programming and I've been having so much fun! I'm putting this down and going back to #nesdev right away but I'll be back!😅
Woke up to one of our playtesters reporting a 1-frame hitch on vertical scrolling. Started digging and ended up scrapping the code for NPC movement and sprite updates completely and starting from scratch. For one annoying frame. #gamedev is hard 😅
November 6, 2025 at 1:44 AM
Woke up to one of our playtesters reporting a 1-frame hitch on vertical scrolling. Started digging and ended up scrapping the code for NPC movement and sprite updates completely and starting from scratch. For one annoying frame. #gamedev is hard 😅
Haha ok this is fun. I'm going to dive more into the N64 when The Book of Rynn is done! #n64brew #homebrew #nintendo64
November 5, 2025 at 1:02 AM
Haha ok this is fun. I'm going to dive more into the N64 when The Book of Rynn is done! #n64brew #homebrew #nintendo64
Just taking a little break tonight to try something a bit different 😎
November 4, 2025 at 10:33 PM
Just taking a little break tonight to try something a bit different 😎
We now have Scribe revives working + real time sprites swap with Mr Skelly (I mistakenly called him Mr Spooky a few days ago! I'm sorry Mr Skelly!) when characters die/get revived. ☠️ Also, poison swamps are back. With Steve, as always, as our test subject. #gamedev #retrogames #jrpg #indiegames
November 4, 2025 at 1:43 AM
We now have Scribe revives working + real time sprites swap with Mr Skelly (I mistakenly called him Mr Spooky a few days ago! I'm sorry Mr Skelly!) when characters die/get revived. ☠️ Also, poison swamps are back. With Steve, as always, as our test subject. #gamedev #retrogames #jrpg #indiegames
Here's the functioning inn system. Scribes can also save games now but I'm not done with them as they also need to revive and remove poison. I got a linker surprise this morning and had to move all string literals to their own dedicated bank. 😅 #nesdev #indiegames #gamedev #jrpg
November 2, 2025 at 11:04 PM
Here's the functioning inn system. Scribes can also save games now but I'm not done with them as they also need to revive and remove poison. I got a linker surprise this morning and had to move all string literals to their own dedicated bank. 😅 #nesdev #indiegames #gamedev #jrpg