It hasn’t been a great week for Paradox Interactive, and things just got a little worse for the publisher. It has announced another delay for Prison Architect 2, the sequel to a cult hit from 2015. The game had been set to drop on May 7 (which was already a delay from March 26) but now it won’t arrive until September 3.

Though builds of Prison Architect 2 had been certified for all platforms, the developers at Double Eleven ran into some technical problems that will take some time to resolve. Some issues concerning memory usage and minimum spec configuration failures emerged. Although the team says its work on fixing those have been successful so far, some other technical challenges started popping up, leading to significantly more crashes.

Double Eleven will use the extra development time to improve the prison management sim’s stability and to refine some of its features. Paradox says it will also take the opportunity to let players get a look inside the development process via additional developer diaries and streams. A stream is set for April 25.

Paradox notes that console players who pre-ordered will automatically be refunded due to platform policies — they’ll need to buy Prison Architect 2 again to get a pre-order bonus. Steam players can request a refund if they wish.

The Prison Architect 2 delay comes one day after studio Colossal Order said it would refund all players who bought the first asset pack for Cities Skylines 2, another game Paradox is publishing. While the asset pack (which will be added to the base game for everyone) worked, there appeared to be a consensus among fans that there wasn’t enough in there to justify the $10 price. There are bigger issues at play though, as Colossal Order has more work ahead to optimize Cities Skylines 2 after a rocky debut. The studio has also delayed the console release and other DLC as it focuses on fixing the core concerns.

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