Answer

You can read an English Jain version of the Mahabharata in texts related to Jain retellings of the epic, especially:

• Trishashti Shalaka Purusha Charitra by Acharya Hemachandra — this includes Jain accounts of many great personalities, including figures connected with the Mahabharata tradition.
• Harivamsha Purana by Acharya Jinasena — an important Jain text that presents Jain narratives related to Krishna, the Yadavas, Pandavas, and associated stories.
• Jain Mahabharata / Pandava Purana traditions — Jain retellings of the Pandava story are found in works such as Pandava Purana, though English availability may vary.

Explanation

In Jain Dharma, the Mahabharata story is not understood exactly the same way as in the Hindu Sanskrit Mahabharata. Jain authors retold the stories of Krishna, the Pandavas, Kauravas, and related figures according to Jain principles such as:

• karma,
• ahimsa,
• renunciation,
• spiritual consequences of violence,
• and liberation-oriented conduct.

So rather than looking only for “the Jain Mahabharata,” it is helpful to search for Jain texts such as Harivamsha Purana, Pandava Purana, and the relevant sections of Trishashti Shalaka Purusha Charitra in English translation.

Takeaway

The most reliable English Jain sources are Jain Purana-style retellings, especially Harivamsha Purana and Trishashti Shalaka Purusha Charitra. If you want a specifically Jain telling of the Pandavas and Krishna, look for English translations of Pandava Purana or Harivamsha Purana.