Battle Fantasia is a 2-D fighting game in which players engage in constant one-on-one combat with a large cast of animals, creatures, and super-powered humans. Players mostly kick, punch, and block their way to victory until the opposing player's life meter runs out. Storylines include some suggestive dialogue, including references to exposed panties and peeping toms. Some picture galleries also depict female characters in revealing outfits (e.g., panties showing). There are several references to alcohol and "getting drunk." Expletives such as "bastard" and "damn" can be heard in the dialogue.