A world much like many others, except it is dealing with first contact with extraterrestrial life and the consequences that follow.
Type: BlossomBlob-like entities that can bond with compatible organisms for nutrition and in exchange can enhance the host by giving them greater strength, durability, and other improvements. Most taken from the comet that the Life Foundation landed on view the relationship of Host and Symbiote as one where the Symbiote is in control. However some believe in a more mutualistic relationship but are a vanishing minority. They have a near universal weakness to high pitched sound and fire.
Originally a company that specialized in outfitting the wealthy and elite with reinforced doomsday bunkers, they have since branched out into genetics, robotics, space, and other forms of 'enhancing the human condition.' All for a fee of course.
Because of the current as of this time deal between Sony and Marvel gives Marvel the rights to Spiderman but seems to leave most of the rest of the supporting cast in limbo? It would seem fair that this universe will mostly consist of characters or concepts first introduced in Spiderman comics or related spin-off works. However as it is still a Marvel property, Characters like Tony Stark, Nick Fury, S.H.I.E.L.D. etc likely still exist in some form or another (such as Stark Industries existing, but Tony Stark not being Ironman, or SHIELD being a cross-national counter-terrorist/peacekeeping group, but don't have helicarriers and so forth.)