Wow an Master System Game, this is nice. What tool did you used ?
Viewing post in Escape from Monster Dimension jam comments
Thanks! The game was developed using:
* SDCC for compiling the C source: http://sdcc.sourceforge.net/
* devkitSMS for interfacing with the Sega Master System hardware: https://github.com/sverx/devkitSMS
* PSGlib for the sound effects : https://github.com/sverx/PSGlib
* BMP2tile for converting the images to Sega Master System compatible formats: https://github.com/maxim-zhao/bmp2tile