The trouble with reading digital comics if you also play games is that you’re always choosing between, say, playing Hearthstone or reading Fables on your tablet. SXPD, as we see in this 30 seconds of footage, asks, “Why limit yourself to one or the other when you can do both?” The offering is not so much a fully mixed breed as it is two like things welded together, with distinct segments where you play and other segments where you flip pages. The best part looks to be how the art of the game (which features space troopers who drive hovering jet skis)…