6. Acquisitions Gram Games Acquisition On May 25, 2018 we acquired a 100% equity interest in Gram Games, a mobile game developer, to expand our hyper-casual and puzzle games portfolio, for total purchase consideration of $299.0 million. Of the total purchase consideration, $230.5 million was paid in cash on the acquisition date and $25.0 million is retained in escrow for a period of 18 months for general representations and warranties for total cash consideration of $255.5 million. The remaining purchase consideration relates to contingent consideration valued at $43.5 million as of the acquisition date. The contingent consideration may be payable based on the achievement of certain future performance targets during each annual period following the acquisition date for a total of three years. We will record changes in the fair value of the contingent consideration obligation within our consolidated statement of operations in each future reporting period as they occur (see Note 4  Fair Value Measurements for further discussion on this estimate). Additionally, in connection with the transaction, the Company executed noncompetition agreements with the prior management owners of Gram Games for a term of three years following the acquisition date. However, the acquisition date estimated fair value of the noncompetition agreements was not material. The following table summarizes the acquisition date fair value of the tangible assets, liabilities assumed, intangible assets, contingent consideration and related goodwill acquired from Gram Games (in thousands, unaudited): Total Cash acquired $ 8,474 Accounts receivable, net acquired 10,747 Prepaid expenses acquired 279 Other current assets acquired 937 Intangible assets, net acquired: Developed technology, useful life of 5 years 43,000 Developed technology, useful life of 3 years 26,000 Trade names, useful life of 7 years 14,000 Trade names, useful life of 3 years 500 Goodwill 223,924 Property and equipment, net acquired 898 Other non-current assets acquired 329 Total assets acquired 329,088 Accounts payable assumed (8,874 ) Income tax payable assumed (502 ) Other current liabilities assumed (5,164 ) Deferred tax liabilities, net assumed (15,499 ) Total liabilities assumed (30,039 ) Total purchase price consideration $ 299,049 Non-current contingent consideration payable (43,500 ) Total cash consideration $ 255,549 Certain amounts noted above are preliminary and subject to change during the respective measurement period (up to one year from the respective acquisition date) as we obtain additional information for the preliminary fair value estimates of the assets acquired and liabilities assumed. The primary preliminary estimates that are not yet finalized relate to certain tangible assets and liabilities assumed, identifiable intangible assets, income and non-income based taxes and residual goodwill. Goodwill, which is non-deductible for tax purposes, represents the excess of the purchase price over the fair value of the net tangible and intangible assets acquired and is primarily attributable to the assembled workforce of the acquired business and expected synergies at the time of the acquisition. The weighted average amortization period of the acquired intangible assets was 4.7 years at acquisition. Transactions costs incurred by the Company in connection with the Gram Games acquisition, including professional fees, were $0.4 million and $1.7 million for the three and nine months ended September 30, 2018, respectively, and were recorded within general and administrative expenses in our consolidated statements of operations. The results of operations from Gram Games have been included in our consolidated statement of operations since the date of acquisition. Pro forma results of operations have not been presented as they are not material to our consolidated statements of operations for the three and nine months ended September 30, 2018.