▲
1
▼
Alien Soldier’s credits tell the player the total amount of damage they took throughout an entire playthrough. Originally, some kind of reward was going to be given for beating the game without taking any damage, but the development team ran out of time before this could be implemented.
▲
1
▼
Treasure president Masato Maegawa and Alien Soldier director Hideyuki Suganami had big ideas in mind for the potential of the game's bosses, with two ideas being thrown around to add a boss with 100 or even 1000 transformations, or a boss with 100 moving/multi-jointed parts. Neither of these ideas were added due to time constraints, but Maegawa still took pride in this early idea for motivating them to further develop the multi-jointed sprite animations in the final game.
▲
1
▼

Lambda Bunny in-game:
https://www.youtube.com/watch?v=K3bUVMqwAAI
Hideyumo Suganami sketch:
https://twitter.com/megadriveshock/status/1336022623973748738
https://www.youtube.com/watch?v=K3bUVMqwAAI
Hideyumo Suganami sketch:
https://twitter.com/megadriveshock/status/1336022623973748738
▲
1
▼
Seven Force, a boss from Gunstar Heroes that appears in this game as the boss of the Underground Mine stage, was originally intended to have two extra forms: Harpy Force and Nemesis Force. These forms were never finished due to time constraints, but voice clips of the game's announcer saying each form's name can be found in the Voice Test, and their idle sprites can be found in the game's data.
Related Games
Factory Panic
Rent-A-Hero No. 1
Die Hard Arcade
Mario & Sonic at the Olympic Winter Games
Amazing Island
Yakuza 3
Sonic the Hedgehog Extreme
Puyo Pop Fever
Mario & Sonic at the Olympic Games
Persona 3 Portable
Astal
Crazy Taxi
Persona5: The Phantom X
Kurohyou: Ryuu ga Gotoku Shinshou
Vanquish
Fighting Vipers
Sonic & Sega All-Stars Racing
Gunstar Heroes
Like a Dragon: Infinite Wealth
Sonic Advance 3
OutRun
Sonic Drift 2
The Amazing Spider-Man vs. The Kingpin
Fatal Fury
Super Monkey Ball Adventure
Yakuza 4
Virtua Racing
Enemy Zero
Hatsune Miku: Project Diva F
ChuChu Rocket!
Virtua Fighter
Castle of Illusion Starring Mickey Mouse
Ristar
Astro Boy: Omega Factor
Sonic the Hedgehog
Sonic Adventure 2
Virtua Fighter 3
Final Fight CD
Daytona USA
Mario & Sonic at the London 2012 Olympic Games
Sonic at the Olympic Games
Flicky
Sonic Adventure
Sonic the Hedgehog 2
Wonder Boy III: The Dragon's Trap
Sega Smash Pack Volume 1
Sonic Rivals
Sakura Wars
Resident Evil Code: Veronica
WarTech: Senko no Ronde