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Determination-Battle-Simulator

Determination Battle Simulator - fan-made UNDERTALE boss battle simulator

Details

External ID
1390288804
Source
GITHUB
Company
—
Product
Determination-Battle-Simulator
Website domain
github.io
Launched
Sept. 27, 2026
Cohort
—
Upvotes
19
Upvotes percentile
0.5840379195490648
Tags
battle-simulator, fangame, html5-game, javascript, undertale
Fetched at
Sept. 30, 2026, 5:02 p.m.
Updated at
Sept. 30, 2026, 5:02 p.m.

Enrichment

Theme
game trainers, mods, and utilities
Vertical
Media & entertainment
Function
—
Audience
B2C
AI stance
Not AI
Project type
Hobby / open-source project
Normalized one-liner
fan-made boss battle simulator for undertale
Manually corrected
False

Could you build this?

Yes It is a standard 2D web-based game mimicking Undertale bullet-hell mechanics, which can easily be built with HTML5 Canvas/JavaScript and standard game loop logic.

Competitors

Other products that read as similar to this one — 33 launches clear the similarity bar, closest 8 shown.

Attention rank: #13 of 34 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 291 days after the earliest competitor.

Other launches for this product