The Sirena Expedition is a short PSX-style horror-platformer in which you explore a mysterious underwater facility.
Players navigate the protagonist, a diver, through a mysterious underwater facility using a 2.5D platforming system. Reviewers praised the camera work, noting that it "almost becomes another character, adding to the suspense" by guiding players without causing disorientation. The relatively straightforward platforming, with movement constrained to four directions, still delivers satisfying challenges.
Interspersed throughout the exploration are environmental puzzles that task players with manipulating objects, such as moving boxes or activating switches, to progress. Reviewers found these puzzles "interesting" and "not too difficult," striking a balance between challenge and accessibility. One reviewer highlighted the puzzles' "mechanics" as a strength, though they wished the developer had "extensively explored" the concept further.
The game's visuals, inspired by the original PlayStation, craft a moody and unsettling tone that complements the Lovecraftian underwater setting. Reviewers praised the "dense" and well-designed underwater ambiance, noting that the excellent sound design, including an original soundtrack, heightens the sense of immersion.
While not the primary focus, the game's narrative, which follows a researcher exploring the facility, has also received positive feedback. Reviewers described the story as "well-paced" and "intriguing," despite finding it occasionally "confusing." The combination of voiced dialogue and environmental storytelling effectively conveys the game's Lovecraftian themes.
The Sirena Expedition encourages players to thoroughly explore the environment, as it features hidden content and alternate gameplay modes that can be unlocked. One reviewer highlighted a "secret code" that unlocks an expanded "Spook Expedition" mode, further extending the game's relatively short one-hour runtime and adding to its replayability.