I'd write "... but I think I didn't get a game worth playing" or, more naturally in American English, "... but I don't think I got a game worth playing'.
Haven't got means that none of my games are worth playing, which may be true but doesn't follow logically from the preceding phrase.
Or briefer still, "Yesterday I downloaded a game."
Tufguy, it would be worthwhile for you to review the way forum members have reduced your original statement's word count. We all subject our own writing to a similar process, aiming for a clear, economical style. Such writing is easy to read and understand.
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