Last week, the Epic Games Store added two titles to its weekly Free Games promotion: Cyan Worlds' Obduction and Mohawk Games' Offworld Trading Company. As of today, both additions are no longer free to claim, however, their removal means Epic Games has reshuffled the freebies available on the digital storefront.

PC players heading over to the Epic Games Store can now grab both Defense Grid: The Awakening and Verdun, with the pair remaining part of the Free Games promotion until July 29. As per usual, the company has also unveiled what both games will be replaced by when they are eventually removed from the deal, with Mothergunship and Train Sim World 2 slated to take their spot, sticking around until August 5.

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As for this week's offerings, Defense Grid: The Awakening is a tower-defense game that originally launched back in 2008. Players have to defend a base against a horde of invading aliens, using an arsenal of different fortifications to keep them at bay. Each weapon type comes with its own benefits and drawbacks, while players will have to consider placement heavily for the best chance at putting down their foes. Defense Grid: The Awakening has been part of the Epic Games Store's free drops before, so some regular visitors to the storefront might already find it in their libraries.

Verdun, on the other hand, is an authentic WW1 military shooter which first hit screens in 2015. The title sees players fight in massive online battles, using historically accurate weaponry to take the fight to their opponents. Developer M2H's goal is to immerse players in an accurate WW1 experience, replicating everything from the soldiers' uniforms to actual battlefields in France and Belgium.

In terms of what's coming next week, Mothergunship is an intense bullet-hell first-person shooter, tasking players with crafting their own weapons and blasting their way through an army of robotic aliens. The game supports co-op, allowing players to blast their way through the extraterrestrial threat together, while it also has randomized environments, meaning no two playthroughs will ever be the same.

Finally, Train Sim World 2 will be a big get for fans of the simulator genre, offering them the most recent iteration of the Train Sim World series. As the title suggests, players will get to drive an array of trains, whether that's with the objective of lugging cargo between two points or taking passengers to their destinations. The game implements several features its predecessors didn't, including new trains, a Livery Designer, and a Scenario Planner.

MORE: All of the Games That Have Been Free on Epic Games Store for July 2021