i design @castlexyz - ex oculus, nike, tumblr

Joined June 2015
373 Photos and videos
May 8
Built a generative subway adventure as a quick experiment, and it already feels like @fal's genmedia CLI unlocks a whole new world... I’m barely scratching the surface
May 7
🚀 Introducing the genmedia CLI, generative media directly from the command line. Generate images, video, 3D and audio from your terminal, alongside Claude and other AI agents. • Native terminal workflows • Easy to plug into scripts pipelines • No dashboards or tab-switching • Installable skills for consistent styles workflows
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May 5
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May 4
Annotators don't have to be web only... I built one for the iOS simulator and have been using it a ton
Apr 16
It’s been satisfying to steadily layer in small improvements, like more delightful handling for image attachments, showing a project’s favicon in the left sidebar, and adding queuing...
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Apr 16
It’s been satisfying to steadily layer in small improvements, like more delightful handling for image attachments, showing a project’s favicon in the left sidebar, and adding queuing...
Apr 2
Fixed one of my biggest terminal annoyances... you can now select and delete text in terminal input fields. Makes CLIs like Codex way smoother
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Apr 2
Fixed one of my biggest terminal annoyances... you can now select and delete text in terminal input fields. Makes CLIs like Codex way smoother
Mar 31
I built chat so I can create cleaner representations of task progress, tool calls, file diffs, etc... here's a fun rolling tool call detail
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Mar 31
I built chat so I can create cleaner representations of task progress, tool calls, file diffs, etc... here's a fun rolling tool call detail
Mar 20
I cobbled together an IDE centered around worktrees and CLIs that fits my workflow without feeling bloated. Building it has felt a bit like snapping Lego blocks together... A few things it has: - open any project, not just git repos - open worktrees and fork them - diff view for each branch - markdown editing / previewing - built-in text editor or open files in your preferred editor - indicators for branches that need your attention - clickable terminal input - themes
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Mar 20
I cobbled together an IDE centered around worktrees and CLIs that fits my workflow without feeling bloated. Building it has felt a bit like snapping Lego blocks together... A few things it has: - open any project, not just git repos - open worktrees and fork them - diff view for each branch - markdown editing / previewing - built-in text editor or open files in your preferred editor - indicators for branches that need your attention - clickable terminal input - themes
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Mar 6
Popping up to share something we've been excited about... Castle has a CLI that lets you edit games using models like Claude and Codex. You can create games at lightning speed, then instantly play, tweak, and share them on mobile and web
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Feb 18
software companies are going to start looking a lot more like cooperative grocery stores
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Osebo retweeted
racing Opus 4.6 against 4.5 to max out a Runescape account
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Osebo retweeted
10 Dec 2025
Normcore 3 is out!! Our team has been doing incredible things with this release. I'm so proud of everyone who worked on this and all of the developers shipping titles with Normcore. We've hosted over one billion multiplayer games, and we're on our way to 1 billion more!
10 Dec 2025
Announcing Normcore 3. We've hosted over one billion multiplayer games. Today we're releasing our biggest update since the launch of Normcore. Host rooms with 100 players, sync scenes without code, automatically match users together, and a lot more. normcore.io/announcements/no…
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Osebo retweeted
12 Dec 2025
Evenings
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15 Nov 2025
I’m back
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7 Nov 2025
extremely under appreciated software:
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Osebo retweeted
this shit took me forever
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28 Oct 2025
there’s a halloween high score event happening in castle right now. the community created spooky games for everyone to compete on and I’m impressed with what they’ve made. here are some of my favorites…
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28 Oct 2025
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Osebo retweeted
17 Oct 2025
like this kind of programming I could imagine doing while bored on the subway, the same way people read an ebook or scroll through Twitter or do a crossword or whatever, and that's a powerful slot to occupy
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16 Oct 2025
very cozy
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