Any cheap, singleplayer games you recommend?

After grinding one game for 100 hours over the past weeks I’m finally out of things to play, but I don’t know what. So if any of you have any cheap (doesn’t have to be that cheap, but preferably under 15£) video game recommendations for me that would be really helpful. It could be a story game but also just something really entertaining and fun. I don’t really know actually, I appreciate every suggestion!