Sega Master System / Mark III / Game Gear
Game for Master System
|1.00||27 Mar 2016||SteveProXNA||3DCity-SMS-1.00.zip (18KB)||3DCity-SMS-1.00-src.zip (81KB)|
There is a forum topic for 3D City
Classic 8-bit Shoot 'em up built for the Sega Master System
3D City is a simple "Shoot 'em up" video game originally programmed by StevePro Studios in New Zealand, January 1988. The game was written using BASIC programming language built on the Sega SC-3000 [source code: http://bit.ly/1n1oEk1].
Inspired from previous posts on Sega Console Programming and z88dk Programming Setup [steveproxna.blogspot.com], 3D City was the impetus to build an 8-bit video game in C / Z80 assembler to target the Sega Master System.
Simple! Move target and shoot all enemy ships before they kill you. 4x misses and it is Game Over. Hint: hold controller Button2 down while moving target slows target down for more focused attack.
You can hack this ROM! Download and dump 3Dcity.sms into Hex Editor, e.g. HxD, and modify the bytes:
- 0x00C0 Death Non-zero = invincibility! - 0x00C1 Level 0=easy (default) 1=hard. - 0x00C2 Enemy 0=3x enemies else 1 or 2. - 0x00C3 Music 0=music on otherwise off. - 0x00C4 Sound 0=sound on otherwise off. - 0x00C5 Tiles 0=tiles scroll yes else no. - 0x00C6 Stars 0=stars flash yes else no.
StevePro Studios is an independent game developer that builds and publishes 80s retro arcade video games! Founded by Steven Boland "SteveProXNA" (Jan-2007) a "one man team of one" currently based in Dublin, Ireland.
Previous Sega-based retro games published include "Candy Kid" available here: