Relentless: Twinsen's Adventure or Little Big Adventure is an action\adventure game made by the creator of Alone in the Dark and Activision. It was released for the original PlayStation and PC.
Twinsen escapes from the asylum and returns to his house which he shares with his girlfriend Zoe, but when Dr. FunFrock's clones arrive to re-arrest him, Zoe hides Twinsen from them and is arrested herself. As Twinsen travels between the islands of the planet, seeking to find a way of overcoming FunFrock's clone army and recover Zoe, he discovers that his strange dreams are in fact part of the Prophecy, a legendary tale regarding a being known as Sendell who is said to inhabit the core of the planet and watch over the people of Twinsun. Twinsen's dreams are in fact telepathic messages sent by Sendell, who chose his ancestors to help her watch over the planet centuries prior and is now contacting Twinsen (as the current descendant of his family line) to warn the inhabitants of the planet of the danger posed by FunFrock.
Realising that finding FunFrock and fulfilling the Prophecy is the only way to recover Zoe, Twinsen teams up with a group of rebels resisting the rule of FunFrock, who help him sabotage FunFrock's cloning and teleportation abilities and give him passage through to the Northern Hemisphere, where FunFrock has set up a massive drilling operation into the heart of the planet. Twinsen breaks into FunFrock's main fortress and finds Zoe seemingly locked in a jail, but she is revealed to be a clone created by FunFrock as bait, and FunFrock reveals that with Twinsen safely locked up where he cannot fulfill his part of the Prophecy, he is free to safely drill through to the Well of Sendell deep in the planet's core, where he hopes to encounter Sendell and gain the godly powers she possesses for himself.
Twinsen escapes from the clutches of FunFrock's clones and succeeds in blowing the fortress up, clearing the way for him to fight through FunFrock's drilling operation to reach the Well of Sendell. FunFrock waits with Zoe at the entrance to the Well, telling Twinsen that he'll spare Twinsen and Zoe if he opens the Well for FunFrock to advance and reach Sendell. Twinsen pushes FunFrock off the side of a cliff during a sword fight and opens the Well in order to complete the Prophecy, inadvertently allowing a surviving FunFrock access as well. Twinsen defeats FunFrock in a final confrontation, and him and Zoe encounter Sendell, a being appearing to consist purely of glowing electrical energy, who thanks them for saving a gestalt entity which she is protecting in the core of the planet. Sendell uses her powers to allow Twinsen and Zoe to fly back to the surface, where the inhabitants of the planet have prepared a celebration in Twinsen's honour.