When looking for synonyms for the phrase "are game for," there are several options available. One option is "are willing to," which suggests a readiness to participate in an activity or event. "Are up for" is another viable alternative, indicating a desire or eagerness to join in on something. "Are open to" is another possibility, conveying a willingness to consider or explore a new idea or option. "Are keen on" suggests a strong interest or enthusiasm for a particular activity or challenge, while "are ready for" implies a preparedness and eagerness to tackle a new project or adventure. Ultimately, the choice of synonym will depend on the specific context and tone of the sentence.