Terra Force © 1987 Nichibutsu.
A standard shooter. All levels are divided in 2 parts : overworld with vertical orientation and underground with horizontal.
Main CPU : Motorola 68000 (@ 8 Mhz)
Sound CPU : Zilog Z80 (@ 3.072 Mhz)
Sound Chips : YM3812 (@ 4 Mhz), (2x) DAC (@ 4 Mhz)
Screen orientation : Horizontal
Video resolution : 320 x 240 pixels
Screen refresh : 57.00 Hz
Palette colors : 2048
Players : 1
Control : 8-way joystick
Buttons : 2 => [A] Shoot, [B] Bomb
Released in December 1987.
Terra Force uses the same innovative overworld/underground and perspective changing gameplay found in Nichibutsu's earlier game "Mag Max".
Pony Canyon / Scitron released a limited-edition soundtrack album for this game (G.S.M. Nichibutsu 1 - D28B0004) on 21/09/1988.
* Terra Force power-ups
B : bomb power-up
L : laser firepower
S : speed-up
P : force field
[JP] Sony PlayStation 4 [PSN] (nov.17, 2016) "Arcade Archives - Terra Force [Model CUSA-04470]"