B.ARK — the Bio-Interstellar Ark — is the last line of defense between the galaxy and a fleet of angry deep-sea creatures that have taken their aggression to the stars. The four defenders aboard are Barker the healing pug, Felicity the rage-fueled cat commander, Walker the protective bear, and Marv the speed-focused rabbit. Each has a different style of play; the best results come from combining them. The game supports co-op, with different tactical approaches unlocking depending on which crew members you bring.