If you're antsy waiting for Star Citizen to let you and your pal run and jump around inside spaceships as well as controlling them, you can now enjoy an arcade-y couch co-op take on the idea in Lovers in a Dangerous Spacetime [official site].
It's a space shooter where you and a pal (or an AI buddy, if you'd rather) control a battleship with different stations for weapons, shields, and engines, dashing around inside between them to avoid being 'sploded by strange and colourful enemies. If that sounds your bag, hey, it came out today. Have a peek:
As you'll see, you two will be navigating through hostile space, dodging enemies and obstacles, raising shields, and blasting away with collectible space weapons like zapguns, neon missile barrages, and a honking great space flail. Space fun for all the space family!
If you dig this but don't have spare cash at the moment, you might fancy having a crack at Regular Human Basketball. It's a free game with a similar idea, only with giant heavily-armed robots trying to basketball. Just like we regular humans play.