Grand Theftendo

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Grand Theftendo in debug mode showing Bitch'n Dog Food and Liberty Pharmaceuticals
Grand Theftendo in debug mode showing the Hospital

Grand Theftendo is a homebrew Grand Theft Auto game being created by Brian Provinciano for the Nintendo Entertainment System (NES). It has been in development since 2002 and was due to be released in late 2005, however it has been delayed due to Provinciano being busy with more important things. It is considered to be a toned-down version of Grand Theft Auto III with only Portland available in-game and the aspect of the game is more mission-oriented. It will be compatible with FCE Ultra but compatibility with Nesticle is unknown and older emulators like fwNES will probably not work with it.

Brian described Grand Theftendo as

"a port of Grand Theft Auto III for the original Nintendo Entertainment System (NES). It is Grand Theft Auto III running on an 8 bit, 256x240 resolution, 2 bit colour x 2 bit palette, 1.79 Mhz system, written entirely in 6502 Assembly Language! It includes the entire Portland city!"

A mission called "Mario's Girl" is started
Grand Theftendo's Ammu-Nation shown in a debug mode screenshot


  • Money will be represented by dollar signs, not bills
  • Missions will be drastically different due to the limitations of the NES
  • There will be no radio
  • The game will played from a top-down perspective
  • Portland is the only city included

The city is 7168x4672 pixels in size. With the pedestrians being 8x12 pixels in size, it's relatively huge. The whole city can be walked or driven though without any load times. It is the largest of it's kind on the NES (much larger and more detailed than Metroid!). It is about 30x24 screens in size (248 visible pixels wide, 192 high).

Brian used graph paper to draw what the city would look like in game, and measured, scaled and adjusted it to fit in 8x8 tiles he had chosen to design in. He said this was incredible helpful, and moreover, "when making an NES game, every tile counts, so the graphics must be designed properly to prevent memory waste. As well, if tiles aren't aligned, they can not be properly coloured with the palette, and collision detection would get sloppy."

Because the NES has memory constraints and very limited power, there will not be any map or mission editors released. The missions are hard-coded in 6502 ASM, rather than as stand alone scripts.

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