V or SHIFT
= Insert Coin
ENTER
= Start Game (after inserting a coin)
Alien Challenge was produced by International Games System in 1995.
International Games System published a total of 7 different machines under this trademark starting in 1994.
During the time Alien Challenge was produced, other machines produced by International Games System included Rock Fever EX, Chugokuryu 3 Special, Crazy Dancing Ex, Do DonPachi II – Bee Storm, Weapon Master, and Golden Captain.
Alien Challenge is a one-on-one 2D fighting game featuring a total of 9 characters, 8 selectable characters, and 1 boss.
