As a former serious gamer, I'd like to add my view. @Kelvin, AMD kitu gani? :-))) Talk about water cooled cards ama processors or over-clocking, then the nearest CPU alone would cost about 1000USD. Standalone is fine and what about the billing system, insert coins or buy token credit and manage prepaid accounts? And serious wear and tear to controllers. On my recent trip, I ended up in a bowling site where the most busiest game was "air hockey" which is pretty interesting. The arcade had games from sega, nintendo. Each of these with full consoles like bikers, guns, helipads etc cost much and are customised like Slot machines. Who can or will maintain these with parts? I see a simple solution : LAN Networked action PC games or WAN strategy games. Breakdown : 1) Central Server capable of how many active sessions = RAM, HDD, CPU = ? 2) Player Controllers = JoySticks or Pads = ? 3) Network = ? 4) How many games can be played = ? 5) Billing management = ? Startup Costs = Not less than 10,000usd? Operating Costs = The usual Profitability = How much to charge per player versues fixed costs of rent, maintainence, kplc, backup power, arcade manager ? Lets punch in these figures for @DJ Claire, hopefully the process can be understood. Rgds. :-)