Warner Brothers has upped its stake in Tomb Raider publisher, Sci/Eidos once again, adding more weight to speculation that the company is poised to snap up the ailing Britsoft publisher.

Warners bought up 10m shares, putting its total up to 52,518,080. That gives it just shy of a fifth of shareholder votes at 19.92%.

Eidos has had a troubled year, with major management reshuffles, international re-structuring and finances rocky enough to shred the QE2. There has been speculation and backroom whispering that Warners will swoop in and buy up the company, further expanding its presence in the games industry.

While Warners still looks most likely to grab the publisher, however, Square Enix recently emerged as a possible competitor in a takeover bid.