_ Direct execution of the game, without the need to download data and simulator.

_ No ads.

_ No need for internet.

_ Compact and small data file.

_ Ability to save and recall the game at any point of the game you want.

The United Arms Organization constructs a top-secret training facility, codenamed Dark Arena, on a small, isolated island on an alien planet.[2][3][4] Genetic splicing was performed to create dangerous Genetically Engineered Organisms (GEOs) that were intended to train troops, under the assurance that special security fail-safe systems would prevent the creatures from breaking free. However, in the summer of 2146, the failsafes failed, allowing the GEOs to overrun the facility and slaughter its personnel.

No sooner after this occurs, Angelina Bradshaw and her special operations team are summoned to the island to try and get things back under control, but all of her men are no match for the GEOs, leaving her trapped alone deep in Dark Arena. She manages to hide for a while to recollect herself and inform authorities of the situation before the GEOs finally find her. Unwilling to share the fate of her comrades, she begins to battle her way out of Dark Arena and must race against time to clear out a path to a hanger on the outskirts of the island and evacuate before a nuclear strike is called to destroy all GEOs as a last resort.

The game's ending depends on the difficulty level set by the player. If the player completes the game on the easiest difficulty, Angelina is ambushed and killed at the hangar by enemies that she did not encounter on her way out, who intelligently set a trap for her.[5] On the medium difficulty, she makes it to the hangar and successfully escapes, but not before being threatened by some enemies she didn't fight.[3] If the hard difficulty was completed, she discovers that she has wiped the entire facility clean of monsters, leaving none to stop her at the hangar. Confident in her unparalleled combat skills, she then takes off and plans to investigate a similar disaster occurring on the planet Wolf.