Ramboat - Offline Action Game v4.5.2

Combat Master Mobile FPS is a smooth, fast-paced first-person shooter for Android by Alfa Bravo Inc. Play team-based battles on realistic maps with a wide variety of weapons. Version 0.30.4 is free to play with in-app purchases.

Saiko no Sutoka is a first-person survival horror game from Habupain. Trapped in a school with Saiko, a dangerous pursuer, you hide, solve puzzles and hunt for keys to escape. There are no powerful weapons here, just stealth, timing and nerve.

Ninja's Creed 2: 3D FPS Game is a stealth action shooter by 707 INTERACTIVE. Play a ninja on first-person missions with bows, dual crossbows, throwing knives and other silent weapons. Some story missions work offline, but events and progress syncing need the internet. Free to play, with optional in-app purchases.

Moon Rhapsody is a retro action-adventure RPG by Kosmic91 that mixes survival, horror and old-school JRPG combat. Explore a lunar world, manage limited SP, fight fast, tense battles and solve puzzles — sometimes running away is the smart move. High difficulty and limited resources, playable offline. Note: the game includes mature themes, with an optional mature-content toggle in the options.

Same Room Same Day: Pocket by Bugi Games is a free psychological horror FPS for Android. Step into Rosaline's mind, fight symbolic demons, solve puzzles, and complete quests to help her find peace. It has high-end graphics, full controller support, and a version on Steam for Windows and macOS.

Bright Memory: Infinite is a first-person action game by FYQD-Studio. You play as Shelia, an agent investigating strange phenomena in the skies in 2036, combining gunplay, sword combat and supernatural powers across two worlds. It supports Xbox wireless controllers and custom touch controls, and needs Android 8.0 or later. On Google Play it is a paid game with in-app purchases.