Rapid Stream is an arcade‑style submarine shooter developed and published by JungleTac for dedicated Sunplus‑based plug‑and‑play systems and handhelds. Players pilot a small submarine through narrow, hazard‑filled corridors, avoiding walls that explode on contact while firing at enemy targets. The game demands quick reflexes and precise movement, with instant failure on collision.

Originally released in a 16‑bit Sunplus version featuring 2D graphics, it was later adapted into a 32‑bit Sunplus build with pre‑rendered visuals, starting at what would be the second stage of the original release. Rapid Stream was typically distributed as part of multi‑game collections bundled.