Games like Fortified

Sanctum 2 is a Tower Defense/FPS hybrid game where you protect oxygen-producing Cores from hordes of aliens. Choose from four character classes, customize your loadouts, and utilize elements from multiple gameplay genres to succeed in this intense and strategic game. Build defenses and then jump into the action to take out enemies in the FPS mode.

"Orcs Must Die! 2" is a thrilling action tower defense game where players can choose to be a War Mage or Sorceress, each with their own unique abilities. The game features a new story-based campaign, co-op mode, and an endless mode, all filled with a wide array of weapons, spells, traps, and upgrades to use against countless hordes of orcs and other monsters. Unleash devastating attacks and strategize with a friend to survive and save the day.

In Orcs Must Die!, you are a war mage tasked with defending fortresses from hordes of invading orcs and other monsters. Use a variety of weapons, traps, and towers to strategically eliminate the enemies and protect your stronghold. The game features a campaign mode with multiple levels, as well as a wave-based survival mode for endless replayability.

"Deathtrap is a role-playing Tower Defense game with action-RPG elements, known for its unique mixture of both genres. Play solo or in co-op mode to defend strongholds and defeat hordes of monsters using deadly traps and spells. Despite some optimization issues and bugs, Deathtrap offers a good story, delightful mechanics, wonderful visuals, excellent music, and high replayability."

In "Infested Planet" , you command a small squad of soldiers against an overwhelming alien force, using strategy and tactical thinking to outmaneuver and outsmart the enemy. With 100,000 aliens closing in, you'll need to build defenses, equip your team with advanced weapons, and launch surprise attacks to capture and destroy alien hives. The ever-mutating alien army keeps you on your toes, demanding constant adaptation and innovation to survive.

"Aliens: Fireteam is a third-person survival shooter set in the Aliens universe, where players battle through four campaigns with up to two additional players or AI. The 'Into the Hive Edition' includes a new campaign and the 'Ultimate Edition' offers additional DLCs, weapons, and the full suite of Endeavor Pass cosmetic DLCs. Build your fireteam and explore the mysterious planet LV-895."

Iron Marines is a real-time strategy game that puts you in command of a powerful army of space-age soldiers. Battle against alien threats and challenge challenging missions using cutting-edge technology and cunning strategies. With a variety of units, upgrades, and heroes to choose from, every playthrough offers a unique and engaging experience.

"Orcs Must Die! 3 brings back the series' signature orc-slaying action with expanded features, including colossal War Scenarios filled with brutal invasions and mountable War Machines. The game offers more of everything fans love - from orcs and traps to weapons and upgrades - along with a new story set 20 years after Orcs Must Die! 2. Prepare for an intense, high-stakes adventure in this long-awaited sequel."

"MarZ: Tactical Base Defense" is a strategy game that challenges you to build a defense base and fight off zombie hordes on Mars. The game features a 20-mission story campaign, skirmish mode with customizable waves of enemies, and an intense "Outbreak" mode. Utilize powerful terraforming tools to create custom maps and share them via Steam Workshop, and research new upgrades for your towers. Recently updated with increased technology options and reworked balancing.

Sanctum is a sensational hybrid of first-person shooter and tower defense, blending intense combat with strategic building and maze creation. Featuring exceptional graphics, phenomenal music, and 4-player co-op, it offers hilarious moments, lots of grinding, and fantastic replayability across multiple challenging modes. Dive into this unique experience and customize your defense with five imaginative weapons.