I really wish they made a sequel to this. It wouldn't have the feel of being a PS1 game obviously (I think alot of the charm comes from the fact that it IS a PS1/PSP game), but with the next generation of consoles being ready, and the sheer weirdness of this game... I think it would be a hit. Really, where can I find a non-PC game that is intended to be as trippy and mysterious as LSD? And coupled with the fact that it's kind of hard to play the game now... We as players will never fully understand the game, it's limits, secrets, and all that other good stuff. Shit, I can just imagine a giant semi-randomized world thrice the size of the PS1 game, with even MORE content strewn about relating to various dreams and their meanings. I've literally clocked 600+ hours into this game and filled every single point in the pixelated face in every night. Every night is a different experience and I'm honestly in love with LSD.
But back on topic...
I think Tombs and Treasures on the NES was an awesome/bizarre game. Iirc, it involved searching ancient ruins, fighting strange monsters, and solving mysteries. It had an "escape the room" feel to it and as a kid, the gruesome endings left a strong impression on me.