If you like the old-school top-down GTA feel

You also HAVE to check out the quick multiplayer match topdown GTA-like Skillshot City. The gameplay feels super tight.

https://store.steampowered.com/app/308600/Skillshot_City/

Maniac is a singleplayer police escape arcade mayhem game with locked in topdown GTA-like gameplay.

https://store.steampowered.com/app/1482380/Maniac/

In a different genre but still worth mentioning for having cool topdown arcade multiplayer & singleplayer combat is Running With Rifles

https://store.steampowered.com/app/270150/RUNNING_WITH_RIFLES