In 48K mode, you get full gameplay with one additional loading after the third level. In 128K mode, the game uses many additional features: additional types of enemies, a variety of punches, cutscenes, effects, in-game AY music, advanced intro and final cut and more. The game has 1 Player and 2 Players modes. Default keys: QAOP + Space + H to change character. You can define keys in the main menu. With every punch you accumulate energy. You can use super strike when the energy is maximum. To do this, hold the fire key, but before you need to move away from the enemy.