Alien 2: On Earth (1980) is a low-budget Italian horror film that has little to offer in terms of scares or substance. The film centers around a group of spelunkers who discover a strange rock that has been contaminated by an extraterrestrial organism. As they venture deeper into the cave system, they find themselves being stalked by a grotesque and deadly creature.

Unfortunately, the film fails to deliver on its promising premise. The characters are poorly developed and lack any real depth or personality, making it difficult for the audience to care about their fates. The creature itself is not particularly frightening or impressive, and the special effects are cheap and unconvincing.

Overall, Alien 2: On Earth is a forgettable horror film that does little to distinguish itself from the countless other low-budget genre offerings of its time. It may be of interest to die-hard horror fans or those interested in the history of Italian horror cinema, but most viewers will likely find it underwhelming and unremarkable.