Believe it or not, it has been two years since 7 Days to Die was released and in celebration of the anniversary you can play it for free this weekend – so long as you are an Xbox Live Gold subscriber. If you manage to survive the weekend while playing the game you will have an opportunity to buy it for 50% off.

7 Days to Die is a first-person horror RPG with survival elements. You will need to build, mine, craft and fight your for your life over the course of seven days (and don’t forget to loot the creatures you dispatch). The game offers local co-op for two players or up to 8 player online co-op. You’re going to want to gather your friends for this game as the final day is brutally difficult with swarms of undead overwhelming your defenses.

The free weekend for 7 Days to Die begins on Thursday, June 21st at 12:01 a.m. PST to June 25th at 11:59 p.m. PST. The 50% off sale ($15 USD) is good until June 25th.