Minecraft Sonic 64 is a fan-made game, not an official release. It's likely a ROM hack or a modification of the original Sonic the Hedgehog game for the Nintendo 64, incorporating elements from the popular Minecraft game.  Gameplay likely combines platforming elements from Sonic and the blocky aesthetics and creative freedom of Minecraft. This unofficial title demonstrates the community's creative use of existing game engines and assets.

Minecraft Sonic 64

Mike Piazza's StrikeZone (USA)