Adrian Raudaschl
Adrian Raudaschl

Good Thoughts

Quick thoughts, observations, and ideas. Like social media, but on my own terms. RSS

2026
Adrian Raudaschl
Adrian Raudaschl@Raudaschl·

A brand new level running in Sonic R, built in Blender

Been playing with Claude Opus 5.5 and GPT-6 Astra together, and between them we finally cracked the reverse engineering needed to get a new level playing in Sonic R.

I ported the level editor I'd been building for Sonic R straight into Blender, so I get all of Blender's modelling tools for free. Then, with a bit of trickery, we increased the buffer size so the game can handle far more vertices. That count used to be capped by a 16-bit integer; it's now a 32-bit one.

The result is a new level,...
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Adrian Raudaschl
Adrian Raudaschl@Raudaschl·

GPT-6 Astra turned Resort Island into a whole world

Genuinely blown away by GPT-6 Astra and Blender.

As you've probably seen, I've been reverse-engineering Sonic R to build a level editor and run custom tracks. So I loaded up the original Resort Island track and asked Astra to expand it. Not tweak it. Expand it, from a racetrack into a world.

The result is incredible. Game changer.

The fact it also made this video is just wild. It animated the camera in Blender, built the flythrough and exported it with music from Suno.
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Adrian Raudaschl
Adrian Raudaschl@Raudaschl·

History: Day of the Badniks

Got a nice little surprise in the mail today. The original inks and pencils from a page in the uk Sonic the Comic issue 4 1993. Bigger than I expected and so strange to be looking at the original art work of something I poured my little escapist head into during my formative years. Shout out to the original artist Ed Hillyer (Ilya)
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Adrian Raudaschl
Adrian Raudaschl@Raudaschl·

Sonic Adventure's Angel Island, smuggled into Sonic R

Got the Angel Island map from Sonic Adventure (1998) running natively in the Sonic R (1997) engine this weekend. Same minimap, same leaderboard, completely different terrain. You can race the loop.

Texture remapping was a nightmare, and there's still some clipping where the falloff fights the mesh segmentation, but it's racing. Had to rework the engine's per-track memory limits to swallow the higher-poly Sonic Adventure assets, which was its own little adventure.

A Sonic Adventure import turne...
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Adrian Raudaschl
Adrian Raudaschl@Raudaschl·

Reverse-engineering Sonic R with Claude Code is genuinely wild

Spent a few hours mucking about with one of my favourite games, Sonic R, with Claude Code as a co-pilot. Genuinely amazing how far you can get reverse-engineering this thing: swapping textures, tweaking the course layout, messing with character behaviour, even hacking together a fast-load straight into a stage so I could test changes without sitting through the menus every time.

Changing the lighting was the bit that surprised me most. Felt like proper dark magic.

Makes me wonder what becomes...
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