Like games from my childhood Alien Sky and Alien Wars. Good inspiration source.
Viewing post in 1999 HYPERBLADE (work in progress) comments
https://strategywiki.org/wiki/Alien_Sky/Gameplay https://strategywiki.org/wiki/Alien_Sky/Power-ups https://strategywiki.org/wiki/Alien_Sky/Enemies https://strategywiki.org/wiki/Alien_Sky/Weapons https://strategywiki.org/wiki/Alien_Sky/Strategies_and_Techniques https://strategywiki.org/wiki/Alien_Sky/Walkthrough https://strategywiki.org/wiki/Alien_Sky/Missions (bosses decriptions too)