Gamescom tickets are in high demand, as evident by the lack of availability for day tickets in the online shop except for Sunday. Afternoon tickets, which cover entries after 2 PM, will still be available on-site.
Trade visitor tickets for Wednesday, Thursday, and Friday as well as three-day tickets are still available in the Online Shop and the ticket office on-site.
If you're in the area and hankering to go, now would be the time to get your tickets, as they're going fast.
Gamescom is being held in Cologne, Germany this August 14-17.