Fantastic little side game that comes with RE2 Remake, they're currently patching and improving the game, fantastic strategy based game as you either take control of the Mastermind who will send hordes of the undead at you. Or the survivors which must use all of their skills and attacks in order to survive the more experienced masterminds.
The game despite it's early small bugs or unintentional mechanics aren't really game killing, and are also being fixed. If you play it on console it may be a bit harder to play the mastermind, so you need a lot of practice either way when you play mastermind since the game is geared towards the survivors overcoming. However with cunning you can easily thwart any REsistance they may throw at you!