Games in the Space simulation genre

Diablo 2 - Durance of Hate is an incredible fan-made demo project in Unreal Engine 5, created by a Polish 3D artist, showcasing the Durance of Hate level where Mephisto from Diablo 2 resides.

Half-Life: Before takes you to an unusual location for Half-Life mods — the infected ship Black Rock in the middle of the ocean, where you'll encounter various creatures from the Xen world, including zombies, headcrabs, and the genetically modified monster Genmod 262.

Point of View is a single-player modification for Half-Life where you play as a Vortigaunt worker named Xonkst. Your goal is to retrieve a stolen crystal from the world of Xen, facing both humans and Xen creatures. Experience the events at Black Mesa from a completely different perspective!

Red Alert 2 - Zombies Campaign is a custom campaign for Yuri's Revenge in which the familiar Red Alert world is plunged into a zombie apocalypse.

FlatOut: Ultimate Carnage Ultrawide Support is a plugin that adds support for 21:9 and higher aspect ratios in FlatOut: Ultimate Carnage.

Uncapped Handicap AI - a mod that reworks the handicap system file of FlatOut Ultimate Carnage so that bots become faster and don't play easy with you if you fall behind them.

Dune 2000: GruntMods Edition - a fan modpack for Dune 2000 that adds support for modern systems, HD graphics and widescreen, online battles, tons of additional content and much more.