Invincible Fighting Spirit is the seventh album-a-day and 10th release by electronic musician Adhesion. The concept of this album is that it is a soundtrack to a fictitious 8-bit or 16-bit era video game. As such, the production sounds intentionally dated, with heavy use of simple waveforms and basic FM synthesis, invoking memories of the days of the Genesis YM2612 and the NES sound chip. The songs of this release are very thematic and were written to be appropriate for specific video game situations.