The games in this series include:
- Star Soldier (1986, NES/MSX; remade in 2003 for GameCube/PS2/PSP)
- Super Star Soldier (1990, TurboGrafx-16) - developed by Kaneko
- Final Soldier (1991, TurboGrafx-16)
- Soldier Blade (1992, TurboGrafx-16)
- Star Parodier (1995, TurboGrafx-CD) - Cute 'em Up featuring Bomberman, developed by Kaneko
- Star Soldier: Vanishing Earth (1997, Nintendo 64)
- Star Soldier R (2008, WiiWare) - Caravan Mode only, although the 5-minutes mode has a final boss and ending.
A Hudson Soft game that could be considered as a spinoff is Hector '87, also known as Starship Hector. It differs from all other Star Soldier games by being set on Earth and scrolling horizontally in its even-numbered stages, but was the first game to feature the 2-minute and 5-minute "Caravan" modes found in the later Star Soldier games.
Tropes appearing in these games:
- Attack Drone: In Soldier Blade, one appears upon picking up any power up.
- Awesome, but Impractical: In Vanishing Earth, the green ship. How cool is it that its Ex-Arms consist of shooting green electricity everywhere, and throwing a freakin' stream of green fire towards the enemy? Problem is, it's the slowest ship, it's Rolling is the shortest, and its main weapon, while it covers pretty much everything in the horizontal field in front of you, is as a result the weakest one since all its damage is spread out rather than focused.
- Boss-Only Level: Final Operation in Soldier Blade, The Earth in Vanishing Earth, and the final stage of the 2003 remake.
- Boss Rush: Boss On Parade in the remake for PSP
- Content Warning: Presumably in order to deter It's Short, So It Sucks!, the purchase page for Star Soldier R gives you a warning in red text that the game only features 2- and 5-minute modes.
- Evil Sounds Deep: Duoss Core in Vanishing Earth.
- Homing Projectile: Played straight in which some of the enemies fire blue energy balls that magnetically lock on to the player's ship unless you move away from them.
- Nostalgia Level: The secret level in Vanishing Earth is the first level of the original Star Soldier.
- Pause Scumming: Not in Caravan modes! The timer will continue to run down while the game is paused.
- Post-Climax Confrontation: In Soldier Blade, you've destroyed and escaped from the Zeograd base, but Duoss, just as promised, returns and wipes out the SIA fleet, and then the true final showdown begins.
- Scoring Points: The main campaign modes have scoring systems. Then there's the "Caravan" modes—2- and 5-minute modes where you fly through a unique stage and destroy as many enemies and tiles as you can to earn points.
- Self-Plagiarism: The Virtual Boy game Vertical Force (also developed by Hudson Soft) is very similar to the original game despite not being nominally part of the series.
- Spread Shot: At max power, your ship boasts the classic "four diagonal streams and two forward streams" pattern.
- Surprisingly Good English: The Japanese version of Vanishing Earth has the story subtitled and voiced entirely in English, with the Japanese only present in the options menu (additional explanations) and episode titles.
- Time-Limit Boss: In the original game, if you take too long to defeat a Star Brain, it escapes and forces you all the way back to the beginning of the level.
- Timed Mission: The Caravan modes.