Life Force is a scrolling shoot-em-up based on the arcade game. It features several elements similar to the earlier game Gradius. You pilot a ship that must blast through several levels full of enemy ships, each ending with a boss. Power ups are collected though the game to give speed ups, missiles, lasers, ripples, and options.
0034 - P1 Lives 0076 - P1 Weapon Level 00 - Normal 01 - Ripple 02 - Laser 0078 - P1 Powerup Level 00 - None 01 - Speed 02 - Missile 03 - Ripple 04 - Laser 05 - Option 06 - Force 0080 - P1 Speed Level (00-0A) 0082 - P1 Force Field Flag 0084 - P1 Invincibility timeout 0086 - P1 Missile Level (00 - None, 01 - Missiles, 02 - More Missiles) 008A - P1 Options (00-02) 0090 - P1 Option #2 Flag 0091 - P1 Option #1 Flag