GMvania Developer's Blog
Notes and updates on Theou Aegis' Castlevania engine
Jan 19, 2025
Revisiting Karate Champ (NES)
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Taking a deeper dive into Karate Champ's code, I started charting the RAM more thoroughly. Cheat Code I stumbled upon what appears to b...
Dec 10, 2024
Crushers are even more messed up than Trapdoors!
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So on the surface, crushers and dropping spikes in CV3 share the same myopic code structure. The y-coordinates are based on one of the addit...
Dec 8, 2024
What were they thinking with trapdoor placement in CV3?
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I didn't delve into CV3u, but I suspect, based on what I see in ReVamp, that it's the same as CV3j. Terrain elements are lumped toge...
Nov 6, 2024
It finally occurred to me what byte $001C was for in CV3
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I called it "Radio Mode" because it had the nifty effect of freezing everything except the music. Even the stepcounter didn't ...
Aug 26, 2024
Jajamaru-Kun (FC): Cutest Ninja Goblin Slayer
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Manipulating the RAM can be pretty difficult, due to how the game was programmed. Every instance has a set of variables, up to 16 total. In ...
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