Phalanx

"Kemco is fixing the difficulty and adjusting the weapons (with a new megabomb and the ability to pick up more at once), which is nice since the best thing about the old game was the way guns could both be leveled up and added to other weapons."

"If you're into games like Gradius and Project S-11, and happen to possess twitch reflexes, Phalanx has your call sign, Ace."