Poland’s biggest computer-game maker jumped after releasing the first bigger patch for its bug-ridden Cyberpunk 2077 game as it strives to get the tittle back on Sony Corp’s PlayStation store.

The Cyberpunk changes released over the weekend focused on “various stability improvements and bug fixes” and the studio is working on further patches, CD Projekt SA said Saturday. Its shares advanced 2.4% by 10.44am in Warsaw, the biggest gain on the WIG20 Index.

While the amendments address the game’s weak performance on older PlayStation consoles, the studio may need to put more effort to reinstate the game on Sony Corp’s online store after it was pulled late last year, according to Trigon Dom Maklerski SA.

“It seems that the patch slightly improved the performance of the game but it’s probably still not enough for Cyberpunk to return to the PlayStation store,” Trigon’s analyst Kacper Kopron said in a note. “We expect it to happen after a bigger patch is released in February.”

Separately, Jefferies raised the company to buy from underperform with a target price set at 308 zloty . CD Projekt traded as high as 261 zloty on Monday.

The futuristic Cyberpunk production, a major release in the gaming industry and a make-or-break venture for the Polish studio, received poor reviews because of glitches on older-generation consoles. CD Projekt lost more than a third of its market value after the outcry, and was pushed to offer refunds.

In recent days, major online stores such as Amazon and Best Buy began offering discounts of almost 60% on the Cyberpunk console version, triggering concerns about revenue from the game. The company expected earlier that patches would permit the game’s return to the PlayStation store.

 - Bloomberg