# 5150: Gaea Prime – First Defense tags: #game/wargame/5150-gaea-prime-first-defense ![[5150 - Gaea Prime First Defense (cover).jpg|600]] Every homeworld has a perimeter, and this is the game about the people who hold it long enough to get mean about it. **5150: Gaea Prime – First Defense** (Javier Herrero & Ed Teixeira, 2020) is the **[[5150 - Wargames]]** line's ground-defense corner — you lead a special squad whose job is to defend Gaea Prime from the alien invaders, engage, kill, or capture them, scoop up their technology, and work toward the only goal that ends it: taking the fight to their ships in space. ## Setting Your role is bluntly stated in the book: *defend Gaea Prime, research alien technology, and board and destroy the Hishen Command Ship.* You're the first — and hopefully not only — line against the Hishen Empire's ground assault, a special squad fighting on the home front while the rest of the war grinds on around you. It's the 5150 universe's own "the enemy is already here" scenario, and it plays with any figures in any scale, on individually mounted bases. ## Mechanics The shared **THW Reaction System** at squad scale — **Reputation**, **taken-versus-Rep** 2d6, reaction tests — and the engine's usual solo/co-op friendliness, now pointed at a defensive campaign. Figures are **Stars** and **Grunts** with the Star advantages (Star Power, Extraordinary Effort, Free Will), and the mission loop is the point: repel, strip the battlefield of tech, and climb toward the spacebound climax. ## Editions - **5150: Gaea Prime – First Defense** (2020) — the ground-defense game, by **Javier Herrero & Ed Teixeira**. *In the library.* ## References - [5150 – Two Hour Wargames](https://www.twohourwargames.com/) - [5150 – Sci-Fi Games — Rebel Minis Press](https://rebelminispress.com/collections/sci-fi-games)