Crunchyroll: ExZeus

This is a fast-paced, hard-difficulty arcade action game with classic retro visuals, best suited for players seeking a quick, intense solo experience. It requires a Crunchyroll subscription to play and is playable in short bursts, making it highly interruptible and suitable for quick sessions. The game is likely playable offline and does not feature energy timers, but its controls may not be ideal for one-handed play.