Way back when RPS was a wee bairn, Alec gurgled and waved his flabby babyfists at Half-Life 2: Wars, a mod turning Valve’s FPS into a Company of Heroes-ish RTS. Pistol squads facing off against headcrab zombies, breaking out RPGs to take down Combine gunships, and all that. Well, RPS has grown a lot since then, as has Alec, and so has HL2: Wars too. Having renamed itself Lambda Wars (it tried Spike but the other mods at school were merciless), it’s matured over the years and is now available on Steam as a standalone game free for all. You don’t even need to own Half-Life.