Free D&D 5e combat simulator. Run 10,000 simulations of any encounter. No ads, no signup.

Joined April 2026
2 Photos and videos
Built a D&D 5e encounter and not sure if your party will survive? Drop them into BattleCast, run the sim, see the actual win rate. Catch a TPK before your players do. Free, no signup. battlecast.gg
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I have simulated 6.8 million battles to find the strongest CR1 monster... I have been in a crazy rabbit hole over the past month trying to build as complete as possible D&D simulator. I think I am in a good place where most basic things and tactics work pretty well... So i have decided to do the think I always wanted - run crazy scale D&D simulations! Hope you enjoy - battlecast.gg/blog/strongest… Let me know if you have other "D&D science experiments" ideas!
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Lots of improvements to the tactical engine landed! The ranged enemies are much more position aware and aim to kite relentlessly!
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10 Cats vs 1 lvl 1 Wizard is a pretty balanced fight in D&D! You can try other matchups on battlecast.gg #DnD #DnD5e #DMTools
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Just added official D&D art to BattleCast - every SRD monster and all 12 classes now use the real artwork from the Monster Manual and Player's Handbook. Toggle between official and our custom art anytime. Built under the @Wizards_DnD Fan Content Policy. Free forever at battlecast.gg
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Thank you @Wizards_DnD for your amazing Fan Content policy - company.wizards.com/en/legal… can't wait to upgrade battlecast.gg/ by using the official art for the monsters from SRD!
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After amazing feedback from the Reddit post - reddit.com/r/dndnext/comment… I have been crazy busy implementing dozens of fixes. The simulation is getting quite stable and reliable now!
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