BattleCap is a casual naval combat shooter developed by MechAlmond Productions. The game supports 1 to 4 players who collect bottle caps to assemble and transform their own warships. Players engage in battles across three major zones with diverse maps and environmental mechanics. The game incorporates Roguelite elements, allowing for battleship upgrades through blessings and relics.

Multiplayer modes include cooperative "Sea Monster Fishing," where players defend a camp against waves of enemies and can collect rare upgrades, and competitive "Cap Party," a three-round tournament mode with unique map stages and mid-game mini-games. Players can strategize based on battleship selection and random map layouts.