Core Defense – Mastery Expansion — Steam Package #552123

Steam package #552123: Core Defense – Mastery Expansion. Review the current price, supported platforms, and 1 included Steam app on SteamPulse.

Steam packageCore Defense – Mastery ExpansionPackage ID #552123
Current package price$4.99
Included apps1Single internal Steam app
PlatformsWindows, macOS, Linux

Package facts

FieldValue
Steam packageCore Defense – Mastery Expansion
Package ID552123
Current package price$4.99
Included apps1
PlatformsWindows, macOS, Linux
Steam Store package URLhttps://store.steampowered.com/sub/552123/

SteamPulse record freshness

FieldValue
SteamPulse package record update (UTC)28 July 2026 - 09:55:16 UTC
Package sourcecached-package-detail
Freshness basisLatest included app record timestamp

Included Steam content

This package currently resolves to 1 tracked Steam app.

Core Defense – Mastery ExpansionDLCThe Mastery Expansion adds a permanent progression to Core Defense: gain mastery points and unlock various bonuses and change game mechanics. You also get five more difficulty levels, additional supercharge difficulty modifiers, new achievements and more!$4.99

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