"[2][3] Delta Particles takes place at the Delta Base, where the protagonist, Nick Farrell, experiences the effects of the resonance cascade at the Black Mesa Research Facility and features four chapters and 35 maps.

[5] The game is set in the technical engineer complex Delta Base, an underground base in Nevada, a similar facility to the Black Mesa Research Facility, where generator engineer Nick Farrell works to maintain the generators.

[7][8] A guard named Otis helps Farrell try and escape the facility.

[9] Epifantsev has released the modification on the video game digital distribution service Steam.

However, the support team there asked him to not use Half-Life in the modification's title because it is trademarked.