abstract
| - Like all other games in the EDF series (with the solitary exception of Insect Armageddon, being an American-made game), it was released in Japan prior to being released elsewhere. The Chikyuu Boueigun (Earth Defense Force) was part of a series of budget games produced in Japan known as the Simple series. The game reached a moderate level of success in Japan and was then released in Europe. It is one of only two franchises of the Simple series to be released outside of Japan, the other being OneeChanbara. However, they did not feel that the success of the game would carry off to North America and therefore it was never released there. Monster Attack features 25 missions with 5 difficulties to choose from (Easy, Normal, Hard, Chaos and Inferno) and can unlock "over 100 weapons" (111, to be exact). The game uses the same armor system found in 2017, when you pick up armor you gain health at the end of the mission, it also has weapon drops which give a random weapon depending on difficulty at the end of the level. It also has a versus mode which allows split-screen players to fight against each other, under their customised choice of terrain. The enemies included in the game are Ants (black, red and queen), Dropships (carriers), Mothership, UFO's which shoot lasers and maneuver similar to gunships (also elite versions), "alien walkers" similar to hectors and a Godzilla-like dinosaur boss which breathes fire; also a stronger variant of this dinosaur appears later, just like in 2017.
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