Games in the Adventure genre

HoMM3: Day of Reckoning (DoR) is a fan-made expansion for HoMM3 that organically continues the game's lore and its official expansions, carefully introducing something new, such as the Viking and Dark Elf factions.

Marathon: Istoria is a single-player RPG scenario set in the Marathon universe, built for the Aleph One engine. It makes full use of the engine's capabilities, offering an advanced character progression system, combat mechanics, and narrative interactions.

Aliens: Eradication TC — a total conversion for Doom on the GZDoom engine, recreating the oppressive atmosphere of Aliens. You have access to 4 unique classes with their own goals and mechanics, survival on the eerie LV-426 base, iconic weapons (including turrets and radar), and smart xenomorphs capable of climbing walls.

Tiberian Sun Factions is a mod for C&C Tiberian Sun that primarily adds two new factions to the game - Civilian Defense Force (CDF) and Computer Assisted Biologically Augmented Lifeform (CABAL).

Project Survival is a heavily reworked version of the Project Brutality mod for Doom, focused on survival and horror, featuring new and redesigned weapons, new animations, enemies, improved AI, and strict resource management.

TERMINATOR DOOM is a gameplay mod for Doom that lets you play as the T-800 Terminator: an unstoppable killing machine with weapons from the Terminator film series, enhanced melee combat, vision modes, and the ability to deliver iconic quotes right during battle.

Half-Life: Recon is a mod for Half-Life in which you play as Adrian Shephard, sent on a reconnaissance mission to an alternative Black Mesa. You need to explore the complex together with your squad of infantrymen and overcome all the hardships and trials of your critically important mission.