Ruari O’Sullivan and Alliance have released a new update to celebrate the first anniversary of their action-platformer, Overwhelm.

The new update adds local co-op to the PC and Mac version of the game, along with a 30% discount that runs until July 25th.

Here’s a rundown of the game:

OVERWHELM is an action horror-world platformer where enemies power-up and you don’t.

• Horror-world Exploration: Explore the oppressive caverns of the hive, guided only by a sparse map. Enemies can appear from anywhere at any time.
• Bosses Give Enemies Power-Ups: As you defeat each of the five unique bosses, their abilities get distributed to the enemies of the world with escalating difficulty.
• Tactile, Tense Combat: Combat is crunchy and fast. One hit and you die. Three deaths and the run is over. Defeat bosses in different orders to optimize your playthrough.
• Intense Soundtrack & Soundscape: The sparse but powerful soundscape keeps you focused and scared. The soundtrack provides occasional ominous synths to compliment intense boss fights and big moments.

Overwhelm is available on Windows PC, Mac (both via Steam), and Switch for $9.99.