Uploaded October 2021 | Updated September 2026, 1 day ago

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The cost of casting a spell: one of the most impactful design decisions in your roguelike.

What mechanics will lead to interesting gameplay? Mana costs? Spells per level? Charges per spell?

I will discuss the various popular systems, categorize them along various axis including but not limited to fungibility and replacability, and share some fun design anecdotes from various early RW prototypes.