Chris Evans got back into his Captain America character for a good cause. The actor teamed up with Omaze to surprise strangers while shopping in a comic book store.

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Evans and his team transformed the comic book shop into an escape room challenge to raise money for Christopher’s Haven. The store was filled with puzzles, riddles and more for the guests to take part in.

Evans started it all off with a Captain America toy that was hooked up to a speaker. He hid in a separate room and spoke to unsuspecting shoppers asking if they’d be willing to take part in his challenge. He then gave them typical escape room-like challenges to overcome. At the end, Evans was waiting for them for a big reveal.

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“Now that you’ve seen what Escape Rooms are all about, let’s see if you have what it takes to get out of one,” Evans says to the viewers.