TV Games:
Any game that is live on FOX/BTN will be offered live on the FoxSports (NOT FoxSportsGO) App. Unfortunately, Game Replays are now only offered with a $ubscription to BTN+. You will need to DVR the game if you want to re-watch it without a BTN+ subscription. The BTN+ game replay library does included CBS/ESPN/ABC broadcasts as well, not just FOX/BTN.
Non-TV Games (Stream Only):
Offered with BTN+ Subscription ONLY, on the BTN+ App. Available Live or for replay. This should be available on Roku, Chromecast and PC. I think also Apple TV and firestick but I do not have those devices to confirm.