As with many mobile titles, Idle Heroes includes redeemable codes that provide players will unique rewards. ... Idle Heroes codes (May 2023) CodeReward HOTIHMAY (NEW)1,000 Gems & 10 Summon Scrolls IMPGIFTIH1,000 Gems & 10 Summon Scrolls IH99960 Summon Scrolls IH77750 Summon Scrolls (New players only) May 2, 2023