R-Type II
The inevitable sequel to the hugely-successful original finds the evil
Bydo Empire once again intent on the destruction of all mankind. The
infamous Beam Weapon and Pod Laser make a welcome return, as do the
beautifully rendered, organic-looking levels. R-type II doesn't do
anything that the original didn't do, but the sequel is every bit as
good as its illustrious predecessor, with the same tight gameplay and
imaginative level design that made R-type such a classic—although
R-Type II is, if anything, more difficult than its already-unforgiving
prequel. (arcade-history)
R-Type II expanded upon its predecessor by introducing some more weapons, and upgraded the Wave Cannon to what is now known as the Diffusion Wave Cannon. If the player continued to charge beyond full beam strength, eventually the ship would become supercharged and capable of releasing a storm of energy waves, which covered a large portion of the screen. (Wikipedia)
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