Pick up the Brimstone and your gun becomes Isaac's charge-up blood laser — using the real sprite and sound from your own copy.
A solo, offline bot-arena vertical slice for Team Fortress 2. Grab the Brimstone pickup and your active weapon transforms into Isaac's signature charge-up blood laser — charge it, then unleash a sweeping beam.
What makes it special: the Brimstone sprite and sound are read live from your own installed copy of The Binding of Isaac: Rebirth. Nothing from Isaac is bundled or redistributed — a tiny bundled setup step locates your install on first Play and prepares the real assets. If Isaac isn't installed, the mashup still loads and tells you so in-game.
-insecure, sv_lan 1) — single-player showcase only.