Slave Zero dreamcast.
Debug options are present, you can activate them by connecting a controller to port 2 of the console and perform button combos . You will know that it is possible to be invicible, to have all the weapons ...
It's up to you to find the mysteries of this prototype !!!
It must be poorly optimized or unfinished. The more games crash the more we advance through the levels.
I have two different builds of Slave Zero having these dev options.
You can download them below:
Slave Zero (Nov 22, 1999 prototype)