You didn’t say what you entered to attach the games disk image - so I’m going to assume you edited the
/opt/pidp11/systems/rsts7/boot.ini file and added a line
attach rk0 rk05-games-rsts0-0.dsk
after the lines attaching the RL02 system disks to the rl0 and rl1 devices.
If the games disk is not in the same directory as the boot.ini file you’ll need to include the path before the file name.
After booting RSTS/E and logging in to the 1,2 account at the Ready prompt enter
mount dk0:games
The disk will be mounted privately as can be seen by entering the
sys/d
command. To see the files on the games disk use
dir dk0:[*,*]
I suggest you create an account to run the games rather than using the system library account [1,2]. You do this using the REACT program. I suggest you have a read of the System Managers Guide at http://elvira.stacken.kth.se/rstsdoc/rsts-doc-v70/ for more details.
Tony