All tracks except 'Title Theme', 'Stage 25' and 'FROM OBJECTOR (No Intro)' were recorded by using the game's sound test or at the title screen. All tracks were recorded at 96 KHz 24-bit using a Sound BlasterX G5 sound card and the stereo headphones jack located at the front of the Mega Drive. It was also re-released worldwide on the Wii Virtual Console in 2007, Steam in 2011, the Nintendo Switch Online + Expansion Pack in 2022 and the Sega Genesis Mini 2 in 2022.This soundtrack was recorded from a real SEGA Mega Drive (PAL, Model 1, VA4) using a Mega Everdrive X3 cartridge. The game's first re-release was on the PlayStation 2 in Japan for the Sega Ages 2500 series which includes different regional releases and extra features.

Some negative critique was directed towards the hard difficulty, steep learning curve, and unorthodox gameplay, but many still recommend it to fans of Gunstar Heroes and the run and gun genre.

Critics praised the game for its challenge and gameplay these sentiments carried over into retrospective reviews where critics also highlighted the game's graphics, soundtrack, and overall intensity. The team designed and marketed Alien Soldier explicitly for 'hardcore' Mega Drive gamers, designing its difficulty and scoring methods for those that enjoyed the system's strong action game library.Īlien Soldier was released towards the end of the Mega Drive's lifecycle in February 1995. With the market for the Mega Drive quickly shrinking to make headway for the incoming 32-bit fifth generation hardware, Suganami received support from other Treasure staff and released the game with only about half of his original ideas realized. Development lasted two years and was led by Hideyuki Suganami, who originally held ambitious plans and wanted to build the entire game himself. Treasure began development on four games after the release of Gunstar Heroes, among these was Alien Soldier.

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