Does Undertale run on Steam Deck?

Undertale is rated Playable on Steam Deck. It runs, but Valve flags some rough edges — you may need the touchscreen, a community controller layout, or tweaked settings.

Valve's test notes

PC (Windows) system requirements

Minimum

Minimum:
OS *: Windows XP, Vista, 7, 8, or 10
Memory: 2 GB RAM
Graphics: 128MB
Storage: 200 MB available space

Recommended

Recommended:
OS *: Windows XP, Vista, 7, or 10
Processor: 2GHz+
Memory: 3 GB RAM
Graphics: 512MB
Storage: 200 MB available space

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