Daddy can feed Baby pills and fruit to heal them (with no repercussions). Daddy moves faster, of course, but he needs it! Daddy has to drag objects, with wonky physics, out of Baby's way, and child-proof a house that is very much not child-proofed: bleach and batteries lay about, the family's glass table is waiting to be smashed and the resulting glass shards eaten, and if the family's car in the garage hits a wall, it explodes. The controls are simple: both players use their left and right mouse buttons, and the WASD keys, to move around and accomplish their goals. There's not much to say other than the game's basic premise.