ElBundee, that fine purveyor of killing scenes both gruesome and original, has written a little add-on for UTJB called JBspecials. Contained therein are subclasses of absolutely every monster from the original Unreal, tweaked and honed to behave as the finest of executioners. In addition, he has scripted an executorial airstrike, the likes of which is guaranteed to evoke shrieks of terror from inmates everywhere. But that's not all. He has also included a waterjailzone and a lavajailzone, and even a exmple map that dmeonstrates the use of each of these new features.
Download JBSpecials, but only if you intend to map with the new code. The .u will be included in UTJB2 so no extra download is neccessary for players.