: Allows players to save their progress at any time, making the notoriously difficult levels more accessible.

: It is considered an "interesting curio" for hardcore shmup collectors due to the rarity of the original unlicensed releases.

: Includes both the 8-bit Famicom-style game and the 16-bit Genesis-style sequel.

: Features like control remapping , multiple screen filters (4 types), and different screen types.

Reviews for the collection are generally mixed to negative, with critics often describing the games as "broken" or "shoddily designed".

The is a compilation of two rare, vertically-scrolling shoot 'em ups (shmups) from the 1990s, originally released exclusively in East Asia. This digital collection includes the 8-bit version (Thunderbolt Fighting Plane) and the 16-bit version (Thunderbolt II) with official English localizations and modern quality-of-life features. Key Game Features

: Players collect various power-ups to upgrade weapons, increase speed, and enhance their health bar while fighting toward stage bosses. Critical Reception and Value