Minecraft's water look alright. There really is nothing special, it's just normal pixel water. I would rate this water 4/10.

Mario Kart 8's water is VERY blue, shiny and clear. It kinda looks like a cheap sport drink. I would rate this water 8/10.

Splatoon's water looks disgusting. It's green and if someone drank it, they would possibly get sick (just like in real life), but it sure is clear looking. So I will rate the water 3/10.

Super Mario Maker's water looks very clear and clean, but I hate water levels. I would rate this water 7.5/10