Aliso Viejo-based Gaikai, the venture-backed developer of videogame streaming services, is looking for buyers for the firm, in what is expected to be a sale worth more than $500M, according to reports today. The reports--from FORTUNE's Dan Primack--said that the firm has already hired bankers to help it with a possible sale. If the sale does happen, it would be a very good return for the firm's backers, who have invested $45.0M in the company. Backers of Gaikai include Benchmark Capital, Intel Capital, Limelight Networks, New Enterprise Associates, Qualcomm Ventures, Rustic Canyon Partners, and TriplePoint Capital. Gaikai raised its last round, a Series C, in July of last year.