Freaks is a 3D game for MS/DOS written in 1993 by me and my friends Manuel Zamora and Antonio Guerrero. It was released as shareware; now you can download it for free. It's a complete game with 4 big episodies and a great variety of monsters (but somewhat crappy for today's standards).
For a more portable/updated version, please see Freaks 2002.
The Incredibly Astonishing Freaks Development Trio
Left to right: Manuel Zamora and Angel Ortega (as demons in flames), Antonio Guerrero (as a glittering cherubin).