Where can I watch O2 for free?

Watch O2 free in HD on Castle. Download the Castle App to stream the full movie with Hindi audio — no subscription, no signup needed.

What languages is O2 available in?

On Castle, O2 is available in Hindi, all in HD.

Rithvik Jothi Raj stars in O2, alongside Nayanthara and Barath Neelakantan in lead roles.

When was O2 released?

O2 was released on 2022-06-17, and is now streaming free on Castle.

Is the Castle App safe to download?

Yes. The Castle APK is a verified safe file. It requires only basic Android permissions and does not need root access. Compatible with Android 6.0 and above.

O2

2022•120 minIMDB 5.8

Directed by G.S. Viknesh and brought to life by Rithvik Jothi Raj, O2 (2022) unfolds in India as Rithvik Jothi Raj faces Trapped in a landslide, Parvathy has to survive and keep the oxygen flowing into her son Veera's body. What happens when she gets obstructed by a passenger?. Co-starring Nayanthara, this Thriller feature delves into thriller, delivering Thriller that keeps audiences engaged from opening scene to final frame.