Here's a free demo for Cleanfall, horrible "alchemic" lovechild of Spelunky, Noita and tower defence
In Cleanfall you essentially play a Roomba that is trying to reverse the apocalypse because the apocalypse is messy. A Roomba capable of tunnelling through miles of procedurally generated, monster-infested crust so as to reorganise the Earth's core and bring about its ultimate objective - a sparkling living room. I enjoy the militant reductiveness of this character motivation. There are sprawling underground ecosystems to discover, yes, weird plants to harvest, fractious clumps of tentacles to appraise, avoid or slaughter. But all of these things are contemptible details to be swept up and bagged and thrown in the dumpster.