A puzzle-platforming game for the SEGA Mega Drive and Genesis, in 68000 assembly. Release date 14th August 2018.

A game by Matt Phillips, Big Evil Corporation Ltd

You may build and play a personal copy of TANGLEWOOD from this source, but please do not pirate the original, unmodified game.

TANGLEWOOD is still available for sale in the following stores:

• TANGLEWOOD WEBSITE: http:https://www.tanglewoodgame.com (physical cartridge copy)
• STEAM: https://store.steampowered.com/app/837190/TANGLEWOOD/ (Windows, Mac, Linux, Mega Drive ROM)
• GOG: https://www.gog.com/game/tanglewoodr (Windows, Mac, Linux, Mega Drive ROM)
• ITCH: https://bigevilcorporation.itch.io/tanglewood (Windows, Mac, Linux, Mega Drive ROM)

TANGLEWOOD builds with SNASM68K.EXE (16-bit, 2.02Ex, Mar 1995) or PSY-Q ASM68K.EXE (32-bit, with path fix by Nemesis). No links to these executables are provided, please source them yourself. Despite their ages, they're still proprietary software.

SNASM68K.EXE runs under MS-DOS 5, Windows 95, or DOSBox configured with EMS option.

To build with SNASM68K.EXE, place a copy of the executable in the ASSEMBLR directory and continue reading. To build with ASM68K.EXE, you'll need to modify the command lines to suit. I'll provide examples when I get the chance.

Start by looking at BLDCONF.ASM to configure the various build options, then run one of the build batch files from the TANGLEWD directory:

• BUILDFIN.BAT: assembles a final build with all debug options disabled
• BUILDEMU.BAT: assembles a debug/emulator build in BIN format
• BUILDDBG.BAT: assembles a debug build in COFF format, for SNASM2 debugger (Cross Products MegaCD devkits)

Logs and output binaries can be found in the TANGLEWD/BIN directory.

To build the PC emulator hosted version of the game with achievements and save system support, pass the EMUBUILD preprocessor option. These builds will hang without the necessary communication from the host emulator, though. See https://github.com/BigEvilCorporation/EvilEmu

In a non-FINAL build, during level gameplay, the following debug button combinations are active:

• A+B+START: Complete current level
• B+C+START: Enter/exit debug move mode. Move player using D-Pad, and hold A, B, or C to increase move speed.
• A+B+C+START: Kill player and reload from last checkpoint

To enter cheat mode: at the legal disclaimer screen, hold START and LEFT until the Djakk eats the Fuzzl. At the main menu, the cursor will be red and angry to indicate cheat mode is active.

Enter Sound Test and play the following sound effects:

• 0x19
• 0x65
• 0x09
• 0x17

then back out to the main menu.

TANGLEWOOD uses the Echo Sound System by Javier (Sik) Degirolmo. See https://github.com/sikthehedgehog/Echo for the license.

I highly recommend Nicolas Hamel's MDStudio for any 68K Mega Drive development: https://github.com/gouky/MDStudio. TANGLEWOOD was partially developed in the MDStudio environment.