Starship Troopers: Ultimate Bug War is out today on PC. It's another licensed retro first-person shooter from Auroch Digital, the creators of Warhammer 40,000: Boltgun. It casts you as a Mobile Infantry soldier wrassling with the Arachnids on a bunch of human colonies, including a seaside resort planet that reminds me of Halo: Combat Evolved.
In general, the game caters to a slightly more recent era of graphicsability than the Doom-ish Boltgun, with boxy weapons and enemies that have me dreaming of the early polygonal 3D period, a few years before the brownification of action games set in. Think heyday of MDK and Turok.