To celebrate Linux's 30th anniversary, Lee Reilly highlights 10 free and open-source Linux games ranging from strategy games like FreeOrion and Freeciv to roguelike titles such as NetHack and Dungeon Crawl Stone Soup. FreeOrion offers a customizable galactic conquest experience, while NetHack provides a challenging dungeon-crawling adventure. Stunt Rally and Red Eclipse 2 cater to racing and FPS enthusiasts, respectively, with features like track editors and parkour elements. Endless Sky and Vega Strike invite players to explore space through trading and combat, while Unknown Horizons and Pixel Wheels offer economic simulation and top-down racing fun. Reilly emphasizes the community-driven development of these games, inviting volunteers to contribute in various roles, from programming and design to content creation and testing.