There's a bunch of interesting mindfulness games out there, which I've found to be pretty hit-or-miss. "Pause" came out to a lot of marketing hype although it didn't do much for me. I found David O'Reilly's "Mountain" to be surprisingly great for a while, just because it gave me something to focus on, although that stopped being effective for me.
Usually if I need some mindfulness stuff I'll just do a body scan, often with the assistance of a mindfulness-specific app. The "Breathe" app built into the Apple Watch is pretty good for that, for example.