Official osMW Pet Simulator

Choose a companion, plan its growth and upgrades, and compare up to six pets using the official osMW pet rules. Use Simplified for a quick reference, or Advanced for every setting.

Build your companion

Explore level, rebirth, natural growth and attribute allocation. Add Dragon Eye, Dragon Bones, pet-specific growth items, evolution, egg resistance transfers and Magical Crystals when you need them.

Understand the results

See exact Health, Mana, Attack and Speed, with permanent resistances and species intimacy bonuses explained separately. Compare commanded and support roles without making changes to your in-game pet.

Keep and share your builds

The simulator remembers your current builds on this device. Share a build link with friends without signing in. Results use the current published rules.

Enable JavaScript to use the interactive controls. You can also browse the pet bestiary.