Here it is. Works with the current dingux release.
You’ll need to download the shareware version, try here: ftp://ftp.3drealms.com/share/1rott13.zip. Extract those files a directory on your SD card and copy rottsw to the same place. If you have the full version use the rott file instead.
NOTE: The game won’t work if HOME isn’t set to something writeable. Warpedflash’s local.zip does this so it should work fine there, other rootfs packages may do it too.
Please look at README-DINGOO for more information.