** Shares of Australia's Ainsworth Game Technology AGI.AX rise as much as 6.4% to A$1.075, hitting their highest since September 15
** Stock marks biggest intraday pct gain since August 19
** Kjerulf Ainsworth, the son of the businessman who started the company, has offered to purchase almost 2.9% of AGI for A$1.30 apiece under a partial takeover bid
** Kjerulf Ainsworth already owns around 7.3% stake in co
** Kjerulf has been trying to stop off-market takeover by co's largest shareholder, Novomatic, over valuation concerns
** Co's independent board committee continues to back the offer from Novomatic
** Stock up 24.3% YTD
(Reporting by Rishav Chatterjee in Bengaluru)
((Rishav.Chatterjee@thomsonreuters.com))