About
Our Mission
DELTARUNE Fight Wiki exists because this game is unusually hard to research. It launched in August 2026, it has no official wiki entry anywhere, and its content arrives in small updates that are never accompanied by a changelog. Almost everything known about it lives in YouTube clear footage rather than in writing. Our goal is to turn that scattered video into structured, searchable text: which bosses exist in the current build, what each pattern does, where the difficulty ladder actually changes, and what is still unconfirmed.
We are a fan project and we say so plainly. Nothing here is endorsed by the developer, and we do not present speculation as fact. Where a boss or a mechanic is supported only by community footage, we label it as reported rather than confirmed. Where a roster or a ranking could change after the next update, we say so on the page rather than implying permanence. If you spot something that is out of date or simply wrong, the fastest route is to tell us through the community channels linked below, and we will re-check it against current footage.
About DELTARUNE Fight
DELTARUNE Fight is a free Roblox boss rush by solo developer ItsIsaacIO that reworks the boss encounters of Toby Fox's DELTARUNE into real-time action fights. Rather than selecting menu commands, you steer a soul-style cursor through live attack patterns, survive the rotation, and then spend your turn dealing damage through a timed action command. It released in August 2026, passed two million visits within about six weeks, and continues to receive new bosses in staged updates. It is not affiliated with the original game's creators, and it is not a general Deltarune wiki: it covers this Roblox place specifically.
About DELTARUNE Fight Wiki
Boss Guides
Attack-by-attack breakdowns of every documented encounter, with the opening tell, the phase change and the punish window written out for each fight in the current build.
Tier Lists & Rankings
Boss rankings built from three published measurements: attack density, pattern readability and punish window size, with the method listed alongside the placements.
Combat Mechanics
How a round actually resolves: the cursor phase, the attack phase, action command timing and the turn budget decision between healing and dealing damage.
Difficulty Modes
What really changes between Standard, Brutal and Genocide runs, and how to tell when a boss is ready for the next tier rather than simply survivable.
Characters & Roles
Role-level guidance on what each pick changes, how solo play differs from a group session, and why character choice never substitutes for learning a pattern.
Unlockables & Updates
Hidden remix encounters, progression ties, and a running record of what each version added in a game that publishes no patch notes.
Primary Sources
- •Official Roblox game page and place data
- •Developer profile and update timestamp
- •Community clear videos published per boss
- •Cross-checked multiplayer footage and patch comparisons
Disclaimer
DELTARUNE Fight Wiki is an independent, fan-made resource. We are not affiliated with ItsIsaacIO, with Toby Fox, or with the creators of DELTARUNE in any way, and we are not an official channel for the game. All game names, characters and trademarks belong to their respective owners. Content here is written from public information and community footage; where a detail is unverified we mark it as such instead of stating it as fact. If you represent a rights holder and want something changed or removed, contact us and we will act on it promptly.