It therefore is a single ROM that offers the entire campaigns of Sonic the Hedgehog and Sonic the Hedgehog 2, either alone or together and enables Sonic 1 Hayai (SAGE '21 Demo) Jul 18, 2021. NOTE: Sonic always collides with the base layer, but can switch between Layer A and Layer B by using the Layer Trigger tiles.
By CHRdutch Sonic the Hedgehog 2 Encore Mode.