A survivor-style run across five notebook worlds, where the enemies are the things that live in stationery: ink blots, paper mites, highlighter hornets. You pick one of three heroes and build a loadout out of six weapons that merge up through tiers and have secret evolutions at the top, which is where a run either comes together or does not. Ink banked between runs buys permanent upgrades. Inkageddon has a seeded daily that everyone plays identically and three difficulties, of which Chill is a lie.