I'm not familiar with Finnish comic books, so I can't do much with the Moomins. Nor do I know much about Italian horror movies. Dario Argento seem to be in sort of a pulp-fiction/gore exploitation so most games that could handle that would be fine. Perhaps one of those narrative systems that let characters earn points in one scene to spend in the next. Gain cinematic power by describing lurid murders and horrible demons, then use those abilities to try to keep the PCs alive when they meet. Or perhaps a system like Mecha/Zodia Sunset/Vensa Thaw where the player's attributes are somehow interconnected with the monsters' attributes.
Minecraft already is a role playing game. The notable part is the unique level up system. Rather than gaining new skills or extra HP at some arbitrary level up or game session stopping point, the character's power increases based on their knowledge of the world and the materials they have access too.
Base characteristics would remain fairly static, though we might allow some variation so that players can fit classes or otherwise be unique. In turn your pools of ore would enhance these abilities or be dynamically crafted into tools to assist in a skill attempt. The pools are refreshed by going farther from home and exploring. To some extent XP, is based on where you go, not how you get there, so fighting enemies and sneaking past have the same reward.
From more of a setting and psychology point of view, we can do some interesting things as well. Gravity and structural limits only seems to apply to living creatures, sand, and gravel - floating islands and castles in the sky are a pretty much required setting element. The re-spawning and flat yet mostly infinite plane of the world seems to speak of some sort of purgatory or matrix like environment. You can't leave, there are few other sentient creatures little direction to go in...
Hell is other Creepers...
BSG could probably be handled decently well in Jovian Chronicles by Dream Pod 9 or some other hard SF RPG. from the 1km1kt.net archives would be an excellent fit, since you can become a Cylon, even if you weren't one before.
Next on the block: an RPG based on a real time strategy game like Command and Conquer.