Maanthrikam offers a blend of action and fantasy that was quite novel for Malayalam cinema at the time of its release. The screenplay maintains a steady pace, with the first half setting up the characters and the central conflict effectively. The second half escalates the tension with well-choreographed action scenes and dramatic confrontations, keeping viewers invested.

The film's content is a mix of traditional heroism and supernatural elements, which adds a unique flavor but occasionally leads to uneven storytelling. The songs, though limited, complement the narrative without disrupting the flow, while the background score enhances the mood, especially during suspenseful and action-packed moments.

Cinematography by Saloo George captures the film's adventurous tone well, with vibrant visuals and dynamic camera work. However, the screenplay sometimes leans on clichés, and certain plot developments could have been tighter to improve overall coherence. Despite these flaws, the film remains an entertaining watch, largely due to Mohanlal's charismatic presence and the director's ability to balance various genres within the film.

Mohanlal: Charismatic and commanding, Mohanlal delivers a performance that anchors the film, blending action and emotion effectively.

Priya Raman: Provides a solid supporting role with emotional depth and screen presence.

Jagadish: Offers comic relief and light-hearted moments that balance the film's intensity.

Raghuvaran: Portrays the antagonist with menace and intensity, adding to the film's tension.