I've been playing splitgate, it is a FPS with portals. The portals work much the same way as from the portal series, 2 portals or placed and you can walk, jump or shoot between them. You can see through your own portals but not other players portals and you can destroy enemy portals. It has modes like oldschool Halo: big head mode, low gravity, odd ball, zombies, and VIP. It is pretty addictive and I would suggest you give it a try.
If anyone is already playing message me and we can play together, if any one wants to give it a try it is free on pc xbox and playstation, plus it has crossplay.