Online mode allows up to 4 players to join the host game. It is known that Robomodo used THUG2 source code, which might explain the level choice. However, it's easy to spot that every level from the final level roster was already reused once: Venice, Hangar, School 2 in THUG, Warehouse (as Training), Downhill Jam and 3 DLC levels in THUG2, Mall and Marseille in THAW. Since Tony Hawk asked fans about their favorite level on Twitter, tons of 'Top 5 levels' articles spawned around the web. The level list was a subject to discuss during the development.
White screen instead of bail recovery animations.
Even though the developers explained the lack of most features using the 'classic feel' argument, there are obvious differences between the original games and the remake. Since this is a remake of the original games, a lot of features from modern games were cut off.